Publications 2013

Blaschko, S.B., T. Chi, J. Miller, L. Flechner, S. Fakra, P. Kapahi, A. Kahn, and M.L. Stoller (2013) "Strontium substitution for calcium in lithogenesis" The Journal of Urology 189(2), 735-739

Blaschko, S.D., J. Miller, T. Chi, L. Flechner, S. Fakra, A. Kahn, P. Kapahi, and M.L. Stoller (2013) "Micro-composition of human urinary calculi using advanced imaging techniques" The Journal of Urology 189(2), 726-734

Chen, X., Liu, L., Marcus, M. A., Wang, W.-C., Oyler, N, A., Grass, M. E., Mao, B., Glans, P.-A., Yu., P., Guo, J., Mao, S. M. (2013) "Properties of disorder-engineered black titanium dioxide nanoparticles through hydrogenation", Scientific Reports 3,1510

Gross, E., J.H. Liu, S. Alayoglu, M.A. Marcus, S.C. Fakra, F.D. Toste, and G.A. Somorjai (2013) "Asymmetric catalysis at the mesoscale: Gold nanoclusters embedded in chiral self-assembled monolayer as heterogeneous catalyst for asymmetric reactions" Journal of the American Chemical Society 135(10), 3881-3886

Kashiwabara, T., Takahashi, Y., Marcus, M. A., Uruga, T., Tanida, H., Terada, Y., Usui, A.(2013) " Tungsten species in natural ferromanganese oxides related to its different behavior from molybdenum in oxic ocean", Geochim. Cosmochim. Acta 106,364-378

[mam1] Lindblom, S. D., Valdez-Barillas, J. R., Fakra, S. C., Marcus, M. A., Wangeline, A. L., Pilon-Smits, E. A. H. (2013) "Influence of microbial associations on selenium localization and speciation in roots of Astragalus and Stanleya hyperaccumulators", Environ. Exp. Biol. 88,33-42

Lindblom, S.D., S.C. Fakra, J. Landon, P. Schulz, B. Tracy, and E.A.H. Pilon-Smits (2013) "Inoculation of Astragalus racemosus and Astragalus convallarius with selenium-hyperaccumulator rhizosphere fungi affects growth and selenium accumulation" Planta 237(3), 717-729

Schmidt, R.,Tantoyotai, P.,Fakra, S. C., Marcus, M. A.,Yang, S. I.,Pickering, I. J.,Bañuelos, G. S.,Hristova, K. R.,Freeman, J. L.(2013) "Selenium biotransformations in an engineered aquatic ecosystem for bioremediation of agricultural wastewater via brine shrimp production", Environmental Science and Technology dx.doi.org/10.1021/es305001n and SI

Teng, Z., Arnold, W., Toner, B. M. (2013) "Microscale characterization of sulfur speciation in lake sediments" Environmental Science and Technology 47(3), 1287-1296

Publications 2012

Alford, E. A., Pilon-Smits, E. A. H., Fakra, S. C., Paschke, M. W. (2012) "Selenium hyperaccumulation by Astragalus (Fabaceae) does not inhibit root nodule symbiosis", Am. J. Botany, 99(12),1930-1941

Bediako, D. K., Lassalle-Kaiser, B., Surendranath, Y., Yano, J., Yachandra, V. K., Nocera, D. G. (2012)“Structure−activity correlations in a nickel−borate oxygen evolution catalyst”, J. Am. Chem. Soc.134,6801-6809

Bañuelos, G. S., Walse, Yang, S. I., Pickering, I. J., S., Fakra, S. C., Marcus, M. A., , Freeman, J. L. (2012) "Quantification, localization, and speciation of selenium in seeds of canola and two mustard species compared to seed-meals produced by hydraulic press", Anal. Chem, doi:10.1021/ac300813e and SI

El Mehdawi, A. F., Cappa, J. J., Fakra, S. C., Self, J., Pilon-Smits., E. A. H. (2012) “Interactions of selenium hyperaccumulators and nonaccumulators during cocultivation on seleniferous or nonseleniferous soil – the importance of having good neighbors”, New Phytologist 194,264-277

Freeman J.L., Marcus M.A., Fakra S.C., Devonshire J., McGrath S.P., Quinn, C. F., Pilon-Smits, E. P. S. (2012) "Selenium hyperaccumulator plants Stanleya pinnata and Astragalus bisulcatus

are colonized by Se-resistant, Se-excluding wasp and beetle seed herbivores" PLoS ONE 7(12): e50516. doi:10.1371/journal.pone.0050516

Kretzschmar, R., Mansfeldt, J., Mandaliev, P. N., Bamettler, K., Marcus, M. A., Voegelin, A. (2012) "Speciation of Zn in blast furnace sludge from former sedimentation ponds using synchrotron X‑ray diffraction, fluorescence, and absorption spectroscopy", Environmental Science and Technology dx.2012, 46 (22), 12381–12390 and SI

Lam, P. J., Ohnemus, D. C., Marcus, M. A. (2012) "The speciation of marine particulate iron adjacent to active and passive continental margins", Geochimica et Cosmochimica Acta 80, 108-124

Leri, A., Myneni, S. C. B. (2012) “Natural organobromine in terrestrial ecosystems”, Geochimica et Cosmochimica Acta 77,1-10 and supplemental

Manceau, A., Marcus, M. A., Grangeon, S. (2012) "Determination of Mn valence states in mixed-valent manganates by XANES spectroscopy", American Mineralogist 97,816-827

Manceau, A., Nagy, K. (2012) "Quantitative analysis of sulfur functional groups in natural organic matter by XANES spectroscopy", Geochimica et Cosmochimica Acta 99,206-223

Mukherjee, S., Stull, J. A., Yano, J., Stamatatos, T. C., Pringouri, K., Stich, T. A.,

Abboud, K. A., Britt, R. D., Yachandra, V. K., Christou. G. (2012) “Synthetic model of the asymmetric [Mn₃CaO₄] cubane core of the oxygen-evolving complex of photosystem II”, Proc. National Acad. Sciences 109,2257-2262

Robison G, Zakharova T, Fu S, Jiang W, Fulper R, Barrea, R., Marcus, M. A., Zheng, W., Pushkar, Y. (2012) “X-Ray fluorescence imaging: A new tool for studying manganese neurotoxicity” PLoS ONE 7(11): e48899. doi:10.1371/journal.pone.0048899 and SI

Shafer, M.M. , Toner, B. M., Overdier, J. T., Schauer, J. J., Fakra, S. C., Hu, S., Herner, J. D., Ayala, A. (2012) “Chemical speciation of vanadium in particulate matter emitted from diesel vehicles and urban atmospheric aerosols”, Environ. Sci. Technol. 46, 189–195

Toner, B. M., Marcus, M. A., Edwards, K. J. E., Rouxel, O., German, C. R. (2012) “Measuring the form of iron in hydrothermal plume particles” Oceanography 25(1),209-212

Trantz, R. C., Pugh, J. D., Varadharajan, C., Zheng, L., Bianchi, M., Nico, P. E., Spycher, N. F., Newell, D. L., Esposito, R. A., Wu, Y., Dafflon, B., Hubbard, S. S., Birkholzer, J. T. (2012) "Effect of dissolved CO2 on a shallow groundwater system: a controlled release field experiment" Environ. Sci. Technol.doi: 10.1021/es301280t and SI

Valdez-Barillas, J. R.,Quinn, C. F., Freeman, J. L., Lindblom, S. D., Fakra, S. C., Marcus, M. A., Gilligan, T. M., Alford, E. R., Wangeline, A. L., Pilon-Smits, E. P. S. (2012) “Selenium distribution and speciation in hyperaccumulator Astragalus bisulcatus and associated ecological partners”. Plant Physiology 159,1834-1844

Publications 2011

Bañuelos, G. S., Fakra, S. C., Walse, S. S., Marcus, M. A., Yang, S. I., Pickering, I. J., Pilon-Smits, E. A. H., Freeman, J. L. (2011) "Selenium accumulation, distribution, and speciation in

spineless prickly pear cactus: a drought- and salt-tolerant, selenium-enriched nutraceutical fruit crop for biofortified foods", Plant Physiology 155,315-327

Bernardis, S., Newman, B. K., Di Sabatino, M., Fakra, S. C., Bertoni, M. I., Fenning, D. P., Larsen, R. B., Buonassisi, T. (2011) “Synchrotron-based microprobe investigation of impurities in raw quartz-bearing and carbon-bearing feedstock materials for photovoltaic applications”, Progress in Photovoltaics DOI: 10.1002/pip.1126

Castillo-Michel, Hiram.(2011) "Accumulation, Speciation, and Distribution of metal(loids) in plants: Applications of Synchrotron techniques in Environmental Sciences" doctoral dissertation, The University of Texas at El Paso, El Paso, TX, 2011, advisor Gardea-Torresdey. J. L.

Castillo-Michel, H., Hernandez-Viezcas, J., Dokken, K. M., Marcus, M. A., Peralta-Videa, J. R., Gardea-Torresdey, J. L. (2011) "Localization and speciation of arsenic in soil and desert plant Parkinsonia florida using μXRF and μXANES", Environmental Science and Technology 45, 7848–7854

Edwards K J, Glazer, B. T., Rouxel, O. J., Bach, W., Emerson, D. , Davis, R. E., Toner, B M, Chan C. S., Tebo B. M., Staudigel H. and Moyer C. L. (2011) “Ultra-diffuse hydrothermal venting supports Fe-oxidizing bacteria and massive umber deposition at 5000 m off Hawaii”. ISME Journal, doi:10.1038/ismej.2011.48.

Frommer, J., Voegelin, A., Dittmar, J., Marcus, M. A., Kretzschmar, R. (2011) "Biogeochemical processes and arsenic enrichment around rice roots in paddy soil: results from micro-focused X-ray spectroscopy", Eur. J. Soil Science 63,305-317 (incl. SI)

Hernandez-Viezcas, J. A., Castillo-Michel, H., Servina, A. D., Peralta-Videa, J. R., Gardea-Torresdey, J. L. (2011) "Spectroscopic verification of zinc absorption and distribution in the desert plant Prosopis juliflora-velutina (velvet mesquite) treated with ZnO nanoparticles", Chemical Engineering Journal 170,346–352

Jacquat, O., Rambeau, C., Voegelin, A., Efimenko, N., Villard, A., Föllmi, Kretzschmar, R.(2011) "Origin of high Zn contents in Jurassic limestone of the Jura mountain range and the Burgundy: evidence from Zn speciation and distribution", Swiss J Geosci 104,409–424 and SI

Li, Y., Liu, J. H.-C., Witham, C. A., Huang, W., Marcus, M. A., Fakra, S. C., Alayoglu, P., Zhu, Z., Thompson, C., Arjun, A., Lee, K., Gross, E., Toste, F. D., Somorjai, G. A. (2011) "A Pt-cluster-based heterogeneous catalyst for homogeneous catalytic reactions: X-ray absorption spectroscopy and reaction kinetic studies of their activity and stability against leaching", J. Amer. Chem. Soc. 133, 13527–13533 and SI

Manceau, A. (2011) "Critical evaluation of the revised akdalaite model for ferrihydrite", American Mineralogist 96,521-533

Masue-Slowey, Y., Kocar, B. D., Jofre, S. A., B., Mayer, K. U., Fendorf, S. (2011)"Transport implications resulting from internal redistribution of arsenic and iron within constructed soil aggregates", Environ. Sci. Technol. 45 (2), 582–588

Mitsonobu, S., Takahashi, Y., Utsonomiya, S., Marcus, M. A., Terada, Y., Iwamura, T., Sakata, M. (2011) "Identification and characterization of nanosized tripuhyite in soil near Sb mine tailings", American Mineralogist 96, 1171-1181

Nagy, K. L., Manceau, A., Gasper, J. D., Ryan, J. N., Aiken G. R. (2011) “Metallothionein-like multinuclear clusters of mercury(II) and sulfur in peat”, Environ. Sci. Technol. 45, 7298–7306

Quinn, C. F., Prins, C. N., Freeman, J. L., Gross, A. M., Hantzis, L. J., Reynolds, R. J. B., Yang, S., Covey, P. A., Bañuelos, G. S., Pickering, I. J., Fakra, S. C., Marcus, M. A., Arathi, H. S., Pilon-Smits, E. A. H. (2011) “Selenium accumulation in flowers and its effects on pollination”, New Phytologist 192,727-737

Sciau, P., Leon, Y., Goudeau, P., Fakra, S. C., Webb, S., Mehta, A. (2011) "Reverse engineering the ancient ceramic technology based on X-ray fluorescence spectromicroscopy" J. Anal. At. Spectrom.26,969-876

Zuang, Y., S. Ahn, A.L. Seyfferth, Y. Masue-Slowey, and S. Fendorf (2011) "Dehalogenation of polybrominated diphenyl ethers and polychlorinated biphenyl by bimetallic, impregnated, and nanoscale zerovalent iron," Environmental Science and Technology 45(11), 4896-4903

Publications 2010

Chan, C. S., Fakra, S. C., Emerson, D., Fleming, E., Edwards, K. J. (2010) "Lithotrophic iron-oxidizing bacteria produce organic stalks to control mineral growth: implications for biosignature formation", The ISME Journal doi:10.1038/ismej.2010.173 and supporting

Chrysochoou, M., Ferreira, D., Johnston, C. (2010) "Calcium polysulfide treatment of Cr(VI)-contaminated soil". J. Hazardous Materials 179, 650-657

Freeman, J.L., Tamaoki, M., Stushnoff, C., Quinn, C. F., Cappa, J.J., Devonshire, J., Fakra, S. C., Marcus, M. A., McGrath, S. P., Van Hoewyk, D, Pilon-Smits , E. A, H (2010) "Molecular mechanisms of selenium tolerance and hyperaccumulation in Stanleya pinnata", Plant Physiology 153,1630-1652 and supplemental

Ganapati, V., Schoenfelder, S., Castellanos, S., Oener, S., Koepge, R., Sampson, A., Marcus, M. A., Lai, B., Morhenn, H., Hahn, G., Bagdahn, J., Buonassisi, T. (2010) "Infrared birefringence imaging of residual stress and bulk defects in multicrystalline silicon", J. Appl. Phys. 108, 063528

Grangeon, S., Lanson, B., Miyata, N., Tani, Y., Manceau, A (2010) "Structure of nanocrystalline phyllomanganates produced by freshwater fungi", American Mineralogist 95,1608-1616

Hudelson, S., Newman, B. K., Bernardis, S., Fenning, D., Bertoni, M. I., Marcus, M. A., Fakra, S. C., Lai, B., Buonassisi, T. (2010) "Retrograde melting and internal liquid gettering in silicon", Advanced Materials 22,3948-3953 and supporting (movie)

Isaure, M.-P., Sarret, G., Harada, E., Choi, Y.-E., Marcus, M. A., Fakra, S. C., Geoffroy, N., Pairis, S., Susini, J., Clemens, S., Manceau, A. (2010) “Calcium promotes cadmium elimination as vaterite grains by tobacco trichomes”, Geochimica et Cosmochimica Acta 74,5817-5834

Leri, A. C., Hakala, J. A., Marcus, M. A., Lanzirotti, A., Reddy, C. M., Myneni, S. C. B (2010) "Natural organobromine in marine sediments: New evidence of biogeochemical Br cycling", Global Biogeochem. Cycles, 24, GB4017

Manceau, A., Matynia, A. (2010) “The nature of Cu bonding to natural organic matter” Geochimica et Cosmochimica Acta 74, 2556–2580 and supporting

Marcus, M. A. (2010) "X-ray photon-in/photon-out methods for chemical imaging" Trends in Analytical Chemistry 29,508-517

McNear, D. H., Chaney, R., Sparks, D. L. (2009) “The hyperaccumulator Alyssum murale uses complexation with nitrogen and oxygen donor ligands for Ni transport and storage” Phytochemistry, 71(2-3),188-200

O'Day, P.A., Vlassopoulos, D. (2010) "Mineral-based amendments for remediation". Elements 6,375-381

Ogliore, R. C., Butterworth, A. L., Fakra, S. C., Marcus, M. A., Westphal, A. J. (2010) "Comparison of the oxidation state of Fe in comet 81P/Wild 2 and chondritic-porous interplanetary dust particles" Earth and Planetary Science Letters 296,278-286

Orcutt, B. N., Bach, W., Becker, K., Fisher, A. T., Hentscher, M., Toner, B. M., Wheat, C. G., Edwards, K. J. (2010) "Colonization of subsurface microbial observatories

deployed in young ocean crust" The ISME Journal doi:10.1038/ismej.2010.157

Quinn, C., Freeman, J. L., Reynolds, R. J. B., Cappa, J. J., Fakra, S. C., Marcus, M. A., Lindblom, S., D., Quinn, E. K., Bennett, L. F., Pilon-Smits, E. A. H. (2010) "Selenium hyperaccumulation offers protection from cell disruptor herbivores", BMC Ecology 10:19

Seyfferth, A.L., Webb, S. M., Andrews, J. C., Fendorf, S. (2010) "Arsenic localization, speciation, and co-occurrence with iron on rice (Oryza sativa L.) roots having variable Fe coatings" Environmental Science and Technology 44,8108-8113 and supporting

Yang, L., Steefel, C. I., Marcus, M. A., Bargar, J. R. (2010) "Kinetics of Fe(II)-catalyzed

transformation of 6-line ferrihydrite under anaerobic flow conditions" Environmental Science and Technology 44 (14), pp 5469–5475 and supporting

M. Vespa, M. Lanson, A. Manceau (2010) “Natural attenuation of zinc pollution in smelter-affected Soil” Environmental Science and Technology 44(20), 7814-7820

Publications 2009

Bargar, J. R., Fuller, C. R., Marcus, M. A., Brearly, A. J., Perez De le Rosa, Webb, S. M., Caldwell, W. A.(2009) “Structural characterization of terrestrial microbial Mn oxides from Pinal Creek, AZ” Geochimica et Cosmochimica Acta 73,877-1222 and supplemental

Chan, C.S., S.C. Fakra, D.C. Edwards, D. Emerson, and J.F. Banfield (2009) "Iron oxyhydroxide mineralization on microbial extracellular polysaccharides" Geochimica et Cosmochimica Acta 73(13), 3807-3818.

Chrysochoou, M., Fakra, S. C., Marcus, M. A., Moon, D., Dermatis, D. (2009) "Microstructural analyses of Cr(VI) speciation in chromite ore processing Residue (COPR)", Environmental Science and Technology 43,5461

Chrysochoou, M., Moon, D.H., S. Fakra, M.A. Marcus, D. Dermatas, and C. Christodoulatos, "Use of Micro-X-ray Absorption spectroscopy and diffraction to delineate Cr(VI) speciation in COPR," Global NEST Journal, Vol 11, No 3, pp 318-324, 2009

Courtin-Nomade, A., Grosbois, C., Marcus, M. A., Fakra, S. C., Beny, J-M., and Foster, A.L. (2009) "The weathering of a sulfide orebody: speciation and fate of some potential contaminants," Canadian Mineralogist 47(3), 493-508

Curti E., Dähn R., Farges F., Vespa M.(2009), “Na, Mg, Ni and Cs distribution and speciation after long-term alteration of a simulated nuclear waste glass: A micro-XAS/XRF/XRD and wet chemical study” Geochimica et Cosmochimica 73, 2283-2298

Flury, B., J. Frommer, U. Eggenberger, U. Mäder, M. Nachtegaal, and R. Kretzschmar, (2009) "Assessment of long-term performance and chromate reduction mechanisms in a field scale permeable reactive barrier," Environmental Science and Technology 43(17),6786-6792 and supp.

Jacquat, O., A. Voegelin, F. Juillot, and R. Kretzschmar, "Changes in Zn speciation during soil formation from Zn-rich limestones," (2009) Geochimica et Cosmochimica Acta 73, 5554-5571 and supp (2009).

Jacquat, O., A. Voegelin, and R. Kretzschmar (2009) "Local coordination of Zn in hydroxy-interlayered minerals and implications for Zn retention in soils ," Geochimica et Cosmochimica Acta 73, 348-363

Manceau, A.(2009) "Evaluation of the structural model for ferrihydrite derived from real-space modeling of high-energy X-ray diffraction data" Clay Minerals, 44, 19-34

Moberly, J.G., T. Borch, R.K. Sani, N.F. Spycher, S.S. Sengor, T.R. Ginn, and B.M. Peyton, "Heavy Metal-Mineral Associations in Coeur d'Alene River Sediments: A Synchrotron-Based Analysis" (2009) Water, Air, & Soil Pollution 201(1), 195-208 .

Mandaliev P., Dähn R., Wehrli B., and Wieland E. (2009) “Macro- and micro-spectroscopic study of Nd (III) uptake mechanisms in hardened cement paste” Environmental Science & Technology 43(21), 8462-8468. DOI: 10.1021/es902016q and supplemental

Navarre-Sitchler, A., Steefel, C., Yang, L., Tomutsa, L., Brantley, S. (2009) “Evolution of porosity and diffusivity associated with chemical weathering of a basalt clast”, J. Geophysical Research 114, F02016

Ogliore, R. C., Westphal, A. J., Gainsforth, Z., Butterworth, A. L., Fakra, S. C., Marcus, M. A. (2009) “Nebular mixing constrained by the Stardust samples” Meteoritics and Planetary Science 44,1675-1681(2009)

Sarret, G., Willems, G., Isaure, M-P., Marcus, M. A., Fakra, S. C., Frerot, H., Pairis, S., Geoffroy, N., Manceau, A., Saumitou-Laprade, P. (2009) "Zinc distribution and speciation in Arabidopsis

halleri x Arabidopsis lyrata progenies presenting various zinc accumulation capacities" New Phytologist 184,581-595 and supplemental

Schmidt, G.T., Lui, K. H., Kersten, M. (2009) “Speciation and mobility of arsenic in agricultural lime” J. Environ. Qual. 38,2058-2069 and supplemental

Toner, B., Fakra, S. C., Manganini, S. J., Santelli, C. M., Marcus, M. A., Moffett, J. W., Rouxel, O., German, C. R., Edwards, K. J. (2009) “Preservation of iron(II) by carbon-rich matrices in

a hydrothermal plume” Nature Geoscience 2 197-201 and Supplemental

Toner, B., Santelli, C. M., Marcus, M. A., Wirth, R., Chan, C. S., McCollum, T., Bach, W., Edwards, K. J. (2009) "Biogenic iron oxyhydroxide formation at mid-ocean ridge hydrothermal vents: Juan de Fuca Ridge" Geochimica et Cosmochimica Acta 73,388-403

Westphal, A.J., S.C. Fakra, Z. Gainsforth, M.A. Marcus, R.C. Ogliore, and A.L. Butterworth (2009) "Mixing fraction of inner solar system material in comet 81P/Wild2" Astrophysical Journal 694(1), 18-28

Yuhas, B.D., S.E. Habas, S.C. Fakra, and T. Mokari (2009) "Probing Compositional Variation within Hybrid Nanostructures," ACS Nano, 2009, 3 (11), 3369–3376 and supp.

Publications 2008

Chorover, J., S. Choi, P. Rotenberg, R.J. Serne, N. Rivera, C. Strepka, A. Thompson, K.T. Mueller, and P.A. O'Day (2008) "Silicon control of strontium and cesium partitioning in hydroxide-weathered sediments," Geochimica et Cosmochimica Acta 72, 2024-2047

Courtin-Nomade, A., Soubrand-Colin, M., Marcus, M. A., Fakra, S. C. (2008) "Evidence for the incorporation of lead into barite from waste rock pile materials" Environ. Sci. Technol. 42, 2867–2872.

Duckworth, O.W., J.R. Bargar, and G.S. Sposito (2008) "Quantitative structure-activity relationships for aqueous metal-siderophore complexes," Environmental Science and Technology 43, 343-349

Gräfe, M., Tappero, R. V., Marcus, M. A., Sparks, D. L. (2008) "Arsenic speciation in multiple metal environments: I. Bulk-XAFS spectroscopy of model and mixed compounds", J. Coll. Interface Science 320(2), 383-399

Gräfe, M., Tappero, R. V., Marcus, M. A., Sparks, D. L. (2008) "Arsenic speciation in multiple metal environments: II. Micro-spectroscopic investigation of a CCA contaminated soil", J. Coll. Interface Science 321(1), 1-20

Ionescu, M., N.P. Bhatia, D.D. Cohen, A. Kachenko, R. Siegele, M.A. Marcus, S. Fakra, and G. Foran (2008) "X-ray absorption spectroscopy at the NiK edge in Stackhousia tryonii Bailey hyperaccumulator," X-Ray Spectrometry 37(6), 629-634

Hopp, L.; Nico, P.S.; Marcus, M.A.; Peiffer, S. (2008) "Arsenic and chromium partitioning in a podzolic soil contaminated by chromated copper arsenate", Envron Sci. Technol. 42(17) 6481-6486

Jacquat, O., Voegelin, A., Villard, A., Marcus, M. A., Kretzschmar, R. (2008) "Formation of Zn-rich phyllosilicate, Zn-layered double hydroxide and hydrozincite in contaminated calcareous soils", Geochimica et Cosmochmica Acta 72(20),5037-5054

Lam, P. J., and J. K. B. Bishop (2008) "The continental margin is a key source of iron to the HNLC North Pacific Ocean", Geophys. Res. Lett., 35,L07608.

Lamborg, C.H., Buesseler, K. O., Lam, P. J. (2008) “Sinking fluxes of minor and trace elements in the North Pacific Ocean measured during the VERTIGO program” Deep-Sea Research II 55, 1564-1577

Lanson, B. Marcus, M. A., Fakra, S., Panfili, F., Geoffroy, N., Manceau, A. (2008) "Formation of Zn–Ca phyllomanganate nanoparticles in grass roots", Geochimica et Cosmochmica Acta 72, 2478-2490 and supporting info

Manceau, A., Nagy, K., Marcus, M. A., Lanson, M., Geoffroy, N., Jacquet, T.,Kirpichtchikova, T (2008) "Formation of metallic copper nanoparticles at the soil-root interface", Environmental Science&Technology, 42 (5), 1766-1772 and supporting info

Marcus, M. A., Westphal, A. J., Fakra, S. C (2008) “Classification of Fe-bearing species from K -edge XANES data using two-parameter correlation plots” J. Synchrotron Radiat. 15,463-468 and erratum

Marcus, M. A., Fakra, S. C., Westphal, A. J., Snead, C. J., Keller, L. P., Kearsley, A., Burchell, M. J. (2008) “Smelting of Fe-bearing glass during hypervelocity capture in aerogel”, Meteoritics and Planetary Science 43(1/2),87-96

Marty, B., Palma, R. , Pepin, R. O., Zimmermann, L., Schlutter, D. J., Burnard, P. G., Westphal, A. J., Snead, C. J., Bajt, S., Beeker, R. H., Simones, J. E. (2008) "Helium and neon abundances and compositions in cometary matter" Science 319, 75 and SOM

Oram, L., Strawn, D. G., Marcus, M. A., Fakra, S. C., Moller, G. (2008) "Macro- and microscale investigation of selenium speciation in Blackfoot River, Idaho sediments" Environmental Science&Technology, DOI 10.1021/es7032229 and supporting

Publications 2007

Arai, Y., Marcus, M. A., Tamura, N., Davis, J. A., Zachara, J. M. (2007) "Spectroscopic evidence for uranium bearing precipitates in vadose zone sediments at the Hanford 300-Area Site", Environmental Science&Technology, 41 (13), 4633-4639 and supporting info

Aruguete, D. M., Marcus, M. A., Li, L.S., Williamson, A., Fakra, S., Gygy, F., Galli, G, A, Alivisatos, A. P. (2007) "Surface structure of CdSe nanorods revealed by combined X-ray absorption fine structure measurements and ab Initio calculations", J. Phys. Chem. C 111(1),75-79 and supporting information

Bodeï, S., Manceau, A., Geoffroy, N., Baronnet, A., Buatier, M. (2007) "Formation of todokorite from vernadite in Ni-rich hemipelagic sediments", Geochimica et Cosmochimica Acta 71, 5698–5716

Buonassisi, T., Heuer, M. Istratov, A. A., Pickett, M. D., Marcus, M. A., Lai, B. Cai, Z., Heald, S. M., Weber, E. R. (2007) "Transition metal co-precipitation mechanisms in silicon", Acta Materialia, 55, 6119-6126

Cabot. A, Puntes, V. F, Shevchenko, E., Yin, Y., Balcells, L., Marcus, M. A., Hughes, S. M., Alivisatos, A. P. (2007) "Vacancy coalescence during oxidation of iron nanoparticles", J. Am. Chem. Soc. 129, 10358-10360 and supporting info

Chan, E. M., Marcus, M. A., Fakra, S., ElNaggar, M., Mathies, R., Alivisatos, A. P. (2007) "Millisecond Kinetics of Nanocrystal Cation Exchange Using Microfluidic X-ray Absorption

Spectroscopy", J. Phys. Chem. A 111, 12210-12215 and supporting information

Freeman, J.L., Lindblom, S. D., Quinn, C. F., Fakra, S., Marcus, M. A., Pilon-Smits, E. A. H. (2007) "Selenium accumulation protects plants from herbivory by Orthoptera via toxicity and deterrence", New Phytologist 175,490-500

Gaillot, A.-C., Drits, V. A., Manceau, A., Lanson, B. (2007) "Structure of the synthetic K-rich phyllomanganate birnessite obtained by high-temperature decomposition of KMnO₄Substructures of K-rich birnessite from 1000^oC experiment", Microporous and Mesoporous Materials 98,267-282

Guo, J.-H., Gupta, A., Sharma, P., Rao, K. V., Marcus, M. A., Dong, C. L., Guillen, J. M. O., Butorin, S. M., Mattesini, M., Glans, P. A., Smith, K. E., Chang, C. L., Ahuja, R. (2007) "X-ray spectroscopic study of the charge state and local ordering of room-temperature ferromagnetic

Mn-doped ZnO", J. Phys.: Condensed Matter 19, 172202

Heuer, M., Buonassisi, T., Istratov, A. A, Pickett, M. D., Marcus, M. A., Minor, A. M., Weber, E. R(2007) "Transition metal interaction and Ni-Fe-Cu-Si phases in silicon", J. Appl. Phys. 101,123510

Leri, A., Marcus, M. A., Myneni, S. C. B (2007) "X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material", Geochimica et Cosmochimica Acta 71, 5834-5846

Lowers, H.A., Breit, G.N., Foster, A.L., Whitney, J., Yount, J., Uddin, M.N., Muneem, A.A. (2007) "Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh", Geochimica et Cosmochimica Acta , 71,2699-2717

Manceau, A., Kersten, M., Marcus, M. A., Geoffroy, N. Granina, L. (2007) "Ba and Ni speciation in a nodule of binary Mn oxide phase composition from Lake Baikal", Geochimica et Cosmochimica Acta 71, 1967–1981

Manceau, A., Lanson, M., Geoffroy, N. (2007) “Natural speciation of Ni, Zn, Ba, and As in ferromanganese coatings on quartz using X-ray fluorescence, absorption, and diffraction”, Geochimica et Cosmochimica Acta 71, 95-128

McNear, D. H., Chaney, R., Sparks, D. L. (2007) “The effects of soil type and chemical treatment

on nickel speciation in refinery enriched soils: A multi-technique investigation”, Geochimica et Cosmochimica Acta 71, 2190-2208

Mishra, A., J. Yano, Y. Pushkar, V.K. Yachandra, K.A. Abboud, and G. Christou (2007) "Heteronuclear MnCa/Sr model complexes, and Ca/Sr EXAFS spectral comparisons with the oxygen-evolving complex of Photosystem II" Chemical Communications 15, 1538-1540

Sarret, G., Isaure, M.-P., Marcus, M. A., Harada, E., Choi, Y.-E., Pairis, S., Fakra, S., Manceau, A. (2007) "Chemical forms of calcium in Ca,Zn- and Ca,Cd-containing grains excreted by tobacco trichomes", Can. J. Chem. 85, 738-746 and supplemental

Takahashi, Y., Manceau, A., Geoffroy, N., Marcus, M. A., Usui, A.(2007), “Chemical and structural control of the partitioning of Co, Ce and Pb in marine ferromanganese oxides”, Geochimica et Cosmochimica Acta, 71,984-1008

Tappero, R. V., Peltier, E., Gräfe, M., Heidel, K., Ginder-Vogel, M., Livi, K. J. T, Rivers, M. L., Marcus, M. A., Chaney, R. L., Sparks, D. L. (2007) "Hyperaccumulator Alyssum murale relies on a different metal storage mechanism for cobalt than for nickel ", New Phytologist 175(4), 641-654

Vespa, M., Wieland, E., Dähn, R., Grolimund, D., Scheidegger, A., (2007) "Determination of the elemental distribution and chemical speciation in highly heterogeneous cementitious materials using synchrotron-based micro-spectroscopic techniques", Cement and Concrete Research, 37, 1473-1482

Voeglin, A., Weber, F.-A., Kretzschmar, R. (2007) "Distribution and speciation of arsenic around roots in a contaminated riparian floodplain soil: Micro-XRF element mapping and EXAFS spectroscopy", Geochimica et Cosmochimica Acta, 71, 5804-5820

Werner, M., Nico, P. S., Marcus, M. A., Anastasio, C. (2007) "Use of Micro-XANES to speciate chromium in airborne fine particles in the Sacramento Valley", Envronmental Science&Technology 41(14) 4919-4924

Yano, J., Robblee, J. Pushkar, Y., Marcus, M. A., Bendix, J. Workman, J., Collins, T. J., Solomon, E. I., DeBeer George, S., Yachandra, V. K., "Polarized X-ray absorption spectroscopy of single-crystal Mn(V) complexes relevant to the oxygen-evolving complex of Photosystem II" (2007) J. Am. Chem. Soc. 129, 12989-13000

Yuhas, B., Fakra, S., Marcus, M. A., Yang, P.(2007) "Probing the Local Coordination Environment for Transition Metal Dopants in Zinc Oxide Nanowires", Nano Letters March 3 (Online, DOI 10.1021/nl0626939)

Publications 2006

Brownlee, D. et. al. (2006) “Comet 81P/Wild2 under a microscope”, Science 314,1711-1716

Buonassisi, T., Istratov, A.A., Pickett, M.D., Heuer, M., Kalejs, J.P., Hahn, G., Marcus, M.A., Lai, B., Cai, Z., Heald, S.M., Ciszek, T.F., Clark, R.F., Cunningham, D.W., Gabor, A.M., Jonczyk, R., Narayanan, S., Sauar, E., Weber, E.R. (2006) "Chemical natures and distributions of metal impurities in multicrystalline silicon materials." Progress in Photovoltaics: Research and Applications 14, 513-531

Buonassisi, T., Istratov, A. A., Pickett, M. D.,Marcus, M. A., Ciszek, T. F., Weber, E. R. (2006) "Metal precipitation at grain boundaries in silicon: Dependence on grain boundary character and dislocation decoration", Applied Phys. Lett. 89, 042102

Buonassisi, T., Istratov, A. A., Pickett, M. D., Rakotoniaina, J.-P., Breitenstein, O., Marcus, M. A., Heald, S. M., Weber, E. R. (2006) "Transition metals in photovoltaic-grade ingot-cast multicrystalline silicon: assessing the role of impurities in silicon nitride crucible lining material", J. Crystal Growth 287(2) 402-407

Flynn, G. J., et. al. (2006) “Elemental composition of Comet 81P/Wild2 samples collected by Stardust”, Science 314, 1731-1735 and supplemental information

Freeman, J. L., Quinn, C. F., Marcus, M. A., Fakra, S., Pilon-Smits, E. A. H. (2006) "Selenium-tolerant diamondback moth disarms hyperaccumulator plant defense", Current Biology, 16, 2181-2192

Freeman, J.L., Zhang, L.H., Marcus, M.A., Fakra, S., McGrath, S.P., Pilon-Smits, E.A.H. (2006) "Spatial imaging, speciation, and quantification of selenium in the hyperaccumulator plants Astragalus bisulcatus and Stanleya pinnata", Plant Physiol. 142, 124-134

Heuer, M., Buonassisi, T., Marcus, M.A., Istratov, A.A., Pickett, M.D., Shibata, T., Weber, E.R.

(2006) "Complex intermetallic phase in multicrystalline silicon doped with transition metals." Physical Review B 73, 235204.

Istratov, A.A., Buonassisi, T., Pickett, M.D., Heuer, M., Weber, E.R. (2006) "Control of metal impurities in "dirty" multicrystalline silicon for solar cells", Materials Science and Engineering B 134,282-286

Khalil, M., Marcus, M. A., Smeigh, A. I., McCusker, J. K., Chong, H. H. W., Schoenlein, R. W. (2006) "Picosecond X-ray absorption spectroscopy of a photoinduced iron(II) spin crossover reaction in solution" J. Phys. Chem. A 110, 38-44

Kirpichtchikova, T.A., Manceau, A., Spadini, L., Panfili, F., Marcus, M. A., Jacquet, T. (2006) "Speciation and solubility of heavy metals in contaminated soil using X-ray microfluorescence, EXAFS spectroscopy, chemical extraction, and thermodynamic modeling", Geochimica et Cosmochimica Acta 70, 2163-2190

Lam, P. J., Bishop J. K. B. ,Henning C. C. , Marcus M. A. , Waychunas G. A., and Fung I. Y. (2006) "Wintertime phytoplankton bloom in the subarctic Pacific supported by continental margin iron" Global Biogeochem. Cycles, 20, GB1006, doi:10.1029/2005GB002557 (supplemental material in ZIP file)

Ryser, A.L., Strawn, D. G., Marcus, M. A., Fakra, S., Johnson-Maynard, J. L., Möller, G. (2006) “Microscopically focused synchrotron X-ray investigation of selenium speciation in soils developing on reclaimed mine lands”, Environmental Science and Technology 40,462-467

Sarret, G., Harada, E., Choi, Y-E., Isaure, M.-P., Geoffroy, N., Fakra, S., Marcus, M. A., Birschwilks, M., Clemens, S., Manceau, A. (2006) "Trichomes of tobacco excrete zinc as zinc-substituted calcium carbonate and other zinc-containing compounds", Plant Physiol., 141,1021-1034

Scheidegger A.M., Vespa M., Grolimund D., Wieland E., Harfouche M., Bonhoure I., Dähn R. (2006). “The use of (micro)-X-ray absorption spectroscopy in cement research”, Waste Management 26 699–705

Smith, A.D., Pradell, T., Roque, J., Molera, J., Vendrell-Saz, M., Dent, A. J., Pantos, E. (2006) "Color Variations in 13th century hispanic lustre - An EXAFS study", J. Non-Cryst. Solids, 352, 5353-5361

Toner B., Manceau A., Webb S.M., Sposito G. (2006) “Zinc sorption to biogenic hexagonal-birnessite particles within a hydrated bacterial biofilm” Geochimica et Cosmochimica Acta, 70, 27-43

Vespa, M., Dähn, R., Galluci, E., Grolimund, D., Wieland, E., Scheidegger, A.M. (2006) “Microscale investigations of Ni uptake by cement using a combination of scanning electron microscopy and synchrotron-based techniques", Environmental Science&Technology, 40, 7702-7709 and supplemental info

Vespa, M., Dähn, R., Grolimund, D., Harfouche, M., Wieland, E., Scheidegger, A. M. (2006) “Speciation of heavy metals in cement-stabilized waste forms: A micro-spectroscopic study,” Journal of Geochemical Exploration 88(1-3), 77–88

Zolensky, M. E., et. al. (2006) “Mineralogy and petrology of Comet 81P/Wild2 nucleus samples”, Science 314, 1735-1739 and supplemental information

Publications 2005 [mam2]

Buonassis, T., Istratov, A., Heuer, M. Marcus, M. A., Jonczyk, R., Isenberg, J. Lai, B., Cai, Z., Heald, S., Warta, W., Schindler, R., Willeke, G. (2005) "Synchrotron-based investigations of the nature and impact of iron contamination in multicrystalline silicon solar cells", J. Appl. Phys. 97, 074901

Buonassisi, T.,Istratov, A. A., Marcus, M. A., Heuer, M., Pickett, M. D.,, Lai, B., Cai, Z., Heald, S. M., Weber, E. R. (2005) "Local measurements of diffusion length and chemical character of

metal clusters in multicrystalline silicon" Solid State Phenomena 108-109, 577-584

Buonassis, T., Istratov, A., Marcus, M. A., Lai, B., Cai, Z., Heald, Weber, E.(2005) "Engineering metal-impurity nanodefects for low-cost solar cells.", Nature Materials 4,676-679

Buonassisi, T., Istratov, A. A., Pickett, M. D., Marcus, M. A., Hahn, G., Riepe, S., Isenberg, J., Warta, W., Willeke, G., . Ciszek, T. F., Weber, E. R. (2005) "Quantifying the effect of metal-rich precipitates on minority carrier diffusion length in multicrystalline silicon using synchrotron-based spectrally resolved x-ray beam-induced current", Applied Physics Lett., 87, 044101

Buonassisi, T., Marcus, M. A., Istratov, A. A., Heuer, M., Ciszek, T. F., Lai, B., Cai, Z., Weber, E. R. (2005) "Analysis of copper-rich precipitates in silicon: chemical state, gettering, and impact on multicrystalline silicon solar cell material" J. Appl. Phys. 97, 063503

van Hoewyk, D., Garifullina, G.F., Ackley, A.R., Abdel-Ghany, S.E, Marcus, M. A., Fakra, S., Ishiyama, K., Inoue, E., Pilon, M., Takahashi, H., Pilon-Smits, E.A.H. (Oct. 21, 2005) "Overexpression of AtCpNifS enhances selenium tolerance and accumulation in arabidopsis", Plant Physiol. 139, 1518-1528

Isaure M.P., Manceau A., Geoffroy N., Laboudigue A., Tamura N., Marcus M.A. (2005) "Zinc mobility and speciation in soil covered by contaminated dredged sediment using micrometer-scale and bulk-averaging X-ray fluorescence, absorption and diffraction techniques", Geochimica et Cosmochimica Acta, 69,1173-1198

Manceau A., Gallup D.L. "Nanometer-sized divalent manganese-hydrous silicate domains in geothermal brine precipitates" (2005) American Mineralogist, 90, 371-381

Manceau A., Tommaseo C., Rihs S., Geoffroy N., Chateigner D., Schlegel M., Tisserand D., Marcus M.A., Tamura N., Chen Z.S. (2005) "Natural speciation of Mn, Ni and Zn at the micrometer scale in a clayey paddy soil using X-ray fluorescence, absorption, and diffraction", Geochimica et Cosmochimica Acta, 69, 4007-4034.

Nachtegaal, M., Marcus, M. A., , Sonke, J.E., Vangronsveld, J., Livi, K.J.T., van Der Lelie, D., Sparks, D. L. (2005) "Effects of in situ remediation on the speciation and bioavailability of zinc in a smelter contaminated soil", Geochimica et Cosmochimica Acta 69, 4649-4664

Panfili, F., Manceau, A., Sarret, G. Spadini, L., Kirpichtchikova T., Bert, V., Laboudigue, A., Marcus, M. A., Ahamdach, N., Libert, M.-F. (2005) "The effect of phytostabilization on Zn speciation in a dredged contaminated sediment using scanning electron microscopy, X-ray fluorescence, EXAFS spectroscopy, and principal components analysis", Geochimica et Cosmochimica Acta 69, 2265-2284

Ryser, A. L., Strawn, D. G, Marcus, M. A., Johnson-Maynard, J. L., Gunter, M. E., Moller, G., "Micro-spectrosopic investigation of selenium-bearing minerals from the Western US Phosphate Resource Area", Geochem. Trans. (2005), 6, 1-11

Sauer, K., J. Yano, and V.K. Yachandra (2005) "X-ray spectroscopy of the Mn₄Ca cluster in the water-oxidation complex of Photosystem II" Photosynthesis Research 85(1), 73-86

Toner B., Manceau A., Marcus M.A., Millet D.B., Sposito G. (2005) "Zinc sorption by a bacterial biofilm", Environmental Science & Technology, 39, 8288 - 8294 and supporting info

Webb, S. M., Dick, G. J., Bargar, J. R., Tebo, B. M. (2005) "Evidence for the presence of Mn(III) intermediates in the bacterial oxidation of Mn(II)", Proc. Nat. Acad. Sci., 102, 5558-5563

Publications 2004

Gerion, D.; Zaitseva, N.; Saw, C.; Casula, M. F.; Fakra, S.; van Buuren, T.; Galli, G. (2004) "Solution synthesis of germanium nanocrystals: success and open challenges", Nano Lett. 4,597-602

Grolimund, D., Senn, M., Trottmann, M., Janousch, M., Bonhoure, I., Scheidegger, A.M., Marcus, M. A. (2004) "Shedding new light on historical metal Samples using micro-focused synchrotron X-Ray fluorescence and spectroscopy", Spectrochimica Acta Part B, 59,1627-1635

Marcus, M. A., MacDowell, A. A., Celestre, R., Manceau, A., Miller, T., Padmore, H. A., Sublett, R. E (2004): "Beamline 10.3.2 at ALS: a hard X-ray microprobe for environmental and materials sciences", J. Synchrotron Radiation, 11, 239-247

Marcus M. A., Manceau A., Kersten M. (2004) "Mn, Fe, Zn and As speciation in a fast-growing ferromanganese marine nodule". Geochimica et Cosmochimica Acta, 68,3125-3136.

Manceau A., Marcus M. A., Tamura N., Proux O., Geoffroy N., Lanson B. (2004) "Natural speciation of Zn at the micrometer scale in a clayey soil using X-ray fluorescence, absorption, and diffraction". Geochimica et Cosmochimica Acta, 68,2467-2483.

Nico, P. S., Fendorf, S. E., Lowney, Y. W., Holm, S. E., Ruby, M. V. (2004)"Chemical Structure of Arsenic and Chromium in CCA-Treated Wood: Implications of environmental weathering", Environmental Science and Technology 38,5253-5260 and supporting info

Roberts, A.C, Seward, T.M., Reusser, E., Carpenter, G.J.C., Grice, J.D., Clark, S.M., Marcus, M.A. (2004) "Eyselite, Fe³⁺Ge⁴⁺₃O₇(OH), a new mineral species from Tsumeb, Namibia". Canadian Mineralogist, 42 1771-1776

Sarret G., Balesdent J., Bouziri L., Garnier J.M., Marcus M.A., Geoffroy N., Panfili F., Manceau A.(2004) "Zn speciation in the organic horizon of a contaminated soil by micro X-ray fluorescence, micro and powder EXAFS spectroscopy and isotopic dilution". Environmental Science and Technology, 38,2792-2801.

Publications 2003

Isaure M.P., Manceau A., Laboudigue A., Tamura N., Marcus M.A. (2003) "Zn speciation in a soil contaminated by the deposition of a dredged sediment by synchrotron x-ray techniques" Journal de Physique, 107, 657-660.

Kirpichtchikova T., Manceau A., Lanson B., Marcus M.A., Jacquet T. (2003) "Speciation and mobility of Zn, Cu and Pb in a truck farming soil contaminated by sewage irrigation." Journal de Physique, 107, 695-698.

Sarret, G., Schroeder, W.H., Marcus, M.A., Geoffroy, N., Manceau, A. (2003) "Localization and speciation of Zn in mycorrhized roots by mSXRF and mEXAFS" Journal de Physique IV 107,1193-1196

Scheidegger, A. M., Grolimund, D., Cui, D., Devoy, J., Spahiu, K., Wersin, P., Bonhoure, I., Janousch, M. (2003) "Reduction of selenite on iron surfaces: a micro-spectroscopic study" Journal de Physique IV 104,417-420

Publications 2002

Isaure, M.-P., Laboudigue, A., Manceau, A., Sarret, G., Tiffreau, C., Trocellier, P., Lamble, G., Hazemann, J. L., Chateigner, D. (2002) "Quantitative Zn speciation in a contaminated dredged sediment by u-PIXE, u-SXRF, EXAFS spectroscopy and principal component analysis" Geochimica et Cosmochimica Acta 66, No. 9, 1549–1567

Manceau, A., Marcus. M. A., Tamura, N. (2002) "Quantitative speciation of heavy metals in soils and sediments by synchrotron X-ray techniques", in Applications of Synchrotron Radiation in Low-Temperature Geochemistry and Environmental Science, P. Fenter and N.C. Sturchio, Eds. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Washington, DC., 49, 341-428

Manceau, A., Tamura, N., Marcus, M. A., MacDowell, A. A., Celestre, R., Sublett, R. E., Sposito, G., Padmore, H. (2002) "Deciphering Ni sequestration in soil ferromanganese nodules by combining X-ray fluorescence, absorption and diffraction at micrometer scales of resolution" (2002) American Mineralogist 87, 1494-1499.

Sarret, G., Saumitou-Laprade, P., Bert, V., Proux, O., Hazemann, J. L., Traverse, A., Marcus, M. A., Manceau, A.(2002) "Forms of Zn accumulated in the hyperaccumulator Arabidopsis halleri" Plant Physiology 130, 1815-1826

Strawn, D., Doner, H., Zavarin, M., McHugo, S. (2002) "Microscale investigation into the geochemistry of arsenic, selenium, and iron in soil developed in pyritic shale materials", Geoderma 108, 237-257

Roberts, D., Scheinost, A. C., Sparks, D. L. (2002) "Zinc speciation in a smelter-contaminated soil profile using bulk and microspectroscopic techniques", Environ. Sci. Technol. 36, 1742-1750