B.S. (1985) Univ.of Massachusetts, Environmental Science
Ph.D. (1993) Univ. of CA Davis, Environmental Chemistry
Research Areas: Analytical and Environmental Chemistry
Our group studies the origin, fate, transport, and remediation of inorganic contaminants in soil and groundwater environments. We focus on the solution and surface chemistry of redox-sensitive elements such As(III)/(V), Cr(III)/(V), Se(IV)/(VI) and the analytical speciation of these elements in complex matrices such as soil, sediment, and wastewater. Specific topics include:
Environmental Remediation: Development and characterization of sorbents such as synthetic metal oxides and metal oxide-coated substrates, nanoscale silver and zero-valent iron, and supported zero-valent iron for removal of metal cation (Pb(II), Cd(II), Zn(II)) and anion (As(V), Cr(VI), Se(VI)) contaminants. Heterogeneous reactions of redox-sensitive elements such as As, Cr, and Se at natural mineral surfaces.
Chemical Analysis: Separation and detection of redox sensitive elements (As(III)/As(V), Se(IV)/Se(VI) and Cr(III)/Cr(VI)) by hyphenated techniques such as ion chromatography coupled with AA, ICP or ICP-MS spectrometry. Detection of trace elements using UV-VIS, graphite-furnace electrothermal AA and MP-AES spectrometry. Elemental analysis by X-ray fluorescence (XRF).
Spectroscopy: Applications of X-ray absorption spectroscopy (EXAFS and XANES) and X-ray photoelectron spectroscopy (XPS) for elucidation of the structure of metal cation and oxyanion surface complexes on synthetic materials (nanomaterials, metal surfaces, metal oxides) and natural minerals found in soil and groundwater aquifers.
Microscopy and Particle Analysis: Applications of scanning electron microscopy (SEM) for surface analysis of minerals and nanoparticle imaging and use of energy dispersive analysis of X-rays (EDX) for elemental analysis of materials. Analysis of synthetic nanoparticles, metal oxides and natural soil and sediment minerals by X-ray diffraction, BET N2 and EGME methods and electrophoretic mobility.
Chemical Modeling: Chemical modeling of redox speciation, precipitation, and adsorption reaction constants in environmental systems using PHREEQC, GEOCHEM, MINTEQ, and FITEQL.
Student coauthors: *undergraduate, ** graduate
Goldberg, S., Manning, B.A. Speciation of arsenic(III)/arsenic(V) and selenium(IV)/selenium(VI) using coupled ion chromatography-hydride generation atomic absorption spectrometry. In Methods of Analysis in Wetland Environments. Soil Science Society of America Monograph, 2012.
Kiser, J.**; Manning B.A. Reduction and immobilization of chromium(VI) by iron(II)-treated faujasite. J. Hazardous Materials. 2010, 174, 167-174.
Olegario, J.T.**; Yee, N.*; Miller, M.*; Sczepaniak, J.*; Manning, B.A. Reduction of Se(VI) to Se(-II) by zerovalent iron nanoparticle suspensions J. Nanoparticle Research. 2010, 12, 2057-2068.
Kanel, S.R.; Manning, B.A.; Choi, H. Transport of surface-modified iron nanoparticles in porous media and application to arsenic(III) remediation. J. Nanoparticle Research. 2007, 9, 725-735.
Manning, B.A.; Kiser, J.**; Kwon, H.C.**; Kanel, S.R. Spectroscopic investigation of Cr(III)- and Cr(VI)-treated nanoscale zerovalent iron. Environ. Sci. Technol. 2007, 41, 586-592.
Manning, B.A. (Invited Article). Arsenic speciation in As(III)- and As(V)-treated soil using XANES spectroscopy. Microchimica Acta 2005, 151, 181-188. Special issue devoted to: "Novel analytical methodologies for the determination of arsenic species in solids, liquids and gases."
Kanel, S.R.; Manning, B.A.; Charlet, L; Choi, H. Removal of arsenic(III) from groundwater by nano-scale zero-valent iron. Environ. Sci. Technol. 2005, 39, 1291-1298. (7th most accessed article in Environmental Science & Technology from January-June 2005).
Bostick, B.; Fendorf, S.E.; Manning, B.A. Arsenite adsorption on galena (PbS) and sphalerite (ZnS). Geochim. Cosmochim. Acta. 2003, 67, 895-907.
Nguyen, Q.T.*; Manning, B.A. Spectroscopic and modeling study of lead adsorption and precipitation reactions on a mineral soil. In Biogeochemistry of Environmentally Important Trace Elements. Cai, Y.; Braids, O.C. Eds; ACS Book Series 835; American Chemical Society, Washington, DC, 2003; pp.388-403.
Manning, B.A.; Fendorf, S.E.; Suarez, D.L. Arsenic(III) complexation and oxidation reactions on soil. In Biogeochemistry of Environmentally Important Trace Elements. Cai, Y.; Braids, O.C. Eds; ACS Book Series 835; American Chemical Society, Washington, DC, 2003; pp.57-69.
Manning, B.A.; Fendorf S.E.; Suarez, D.L. Arsenic(III) oxidation and arsenic(V) adsorption reactions on synthetic birnessite. Environ. Sci. Technol. 2002, 36, 976-981.
Manning, B.A.; Hunt, M.**; Amrhein, C.; Yarmoff, J.A. Arsenic(III) and arsenic(V) reactions with zerovalent iron corrosion products. Environ. Sci. Technol. 2002, 36, 5455-5461.
Manning, B.A.; D.L. Suarez. Modeling arsenic(III) adsorption and heterogeneous oxidation kinetics in soils. Soil Sci. Soc. Am. J. 2000, 64, 128-137.
Manning, B.A.; Fendorf, S.E.; Suarez, D.L. Arsenate Surface Complexes in Soil and Model Compounds. American Chemical Society. Proceedings of Division of Environmental Chemistry, Extended Abstracts, 1999, 39, 288-290.
Manning, B.A. Selenium immobilization by in situ precipitation of ferric oxyhydroxide. In R.A. Meyers (ed.) The Encyclopedia of Environmental Analysis and Remediation. John Wiley & Sons, New York, NY. 1998, pp. 4285-4291.
Manning, B.A.; Fendorf, S.E.; Goldberg, S. Surface structures and stability of arsenic(III) on goethite: Spectroscopic evidence for inner‑sphere complexes. Environ. Sci. Technol, 1998, 32, 2383-2388.
Manning, B.A.; Martens, D.A. Speciation of arsenic(III) and arsenic(V) in sediment extracts by high performance liquid chromatography-hydride generation atomic absorption spectrophotometry. Environ. Sci. Technol. 1997, 31, 171-177.
Manning, B.A.; Goldberg, S. Adsorption and stability of arsenic(III) at the clay mineral-water interface. Environ. Sci. Technol, 1997, 31, 2005-2011.
Manning, B.A.; Goldberg, S. Arsenic(III) and arsenic(V) adsorption on three California soils. Soil Sci. 1997, 162, 886-895.
Manning, B.A.; Goldberg, S. Modeling competitive adsorption of arsenate with phosphate and molybdate on oxide minerals. Soil Sci. Soc. Am. J. 1996, 60, 121-131.
Manning, B.A.; Goldberg, S. Modeling arsenate competitive adsorption on kaolinite, montmorillonite, and illite. Clays & Clay Miner. 1996, 44, 609-623.
Manning, B.A.; Burau, R.G. Selenium immobilization in evaporation pond sediment by in situ precipitation of ferric oxyhydroxide. Environ. Sci. Technol. 1995, 29, 2639-2646.