Dr. Wenjian Lao
Wenjian Lao is a chemist who specializes in trace analysis and enantioseparation of toxic contaminants. He received his B.S. in chemistry from Xi'an Petroleum Institute in 1990, and his M.S. and Ph.D. in analytic chemistry from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, in 1996 and 2000 respectively. Dr. Lao joined SCCWRP in 2006. His current research focuses on passive sampling (solid phase microextraction and polyethylene) method development and application, analysis of legacy pollutants and contaminants of emerging concern (CECs) in the environment.
Ph.D., Analytic Chemistry, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences (CAS), 2000
M.S., Analytic Chemistry, LICP, CAS, 1996
B.S., Chemistry, Xi'an Petroleum Institute, P.R. China, 1990
Areas of Expertise
Dr. Lao specializes in environmental trace analysis, enantioseparation of chiral organic pollutants and chiral stationary phase synthesis, and passive environmental sampling technology.
Dr. Lao began his career working on sampling and analysis of persistent organic pollutants in Beijing. He participated in many oil and gas geochemical prospecting projects as an analytical chemist/engineer in China. He developed a method for rapid analysis of free hydrocarbons by gas chromatography. He has studied the synthesis, fluorescence properties and biological activities of carbazole carboxylic acids, prepared chiral stationary phases, and developed chiral separation methods for selected organic pesticides.
Before joining the Southern California Coastal Water Research Project (SCCWRP), Dr. Lao investigated enantioselectivity of imidazolinone herbicides and rodenticides in the environment. He was the lead analyst for characterizing wet and dry atmospheric deposition of selected insecticides in coastal urban watersheds. He led a study to quantify and reduce pesticide loading from commercial landscapes into receiving waters.
Currently, Dr. Lao is working on passive sampling methods, including solid phase microextraction (SPME), polyethylene devices (PEDs), and poly (methyl methacrylate) (PMMA), ultratrace levels of legacy and emerging contaminants of concern.
Chemist, Southern California Coastal Water Research Project. Costa Mesa, CA. 2006-Present
Postdoctoral Researcher, University of California, Riverside, Department of Environmental Sciences. Riverside, CA. 2005-2006
Postdoctoral Associate, Mississippi State University, Chemistry Department. Mississippi State, MS. 2003-2005
Research Associate, Vanderbilt University, Department of Chemistry. Nashville, TN. 2003-2003
Research Scientist, The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Beijing, P.R. China. 2001-2003
Graduate Student Researcher, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. Lanzhou, P.R. China. 1995-2000
Engineer, Analytical Chemistry Division, Geochemical Crews, BGP Inc., China National Petroleum Corporation. Zhuozhou, P.R. China. 1990-2002
Honors and Awards
Principal investigator, China Postdoctoral Science Foundation (2001)
The Peng Yingang Science and Technology Fellowship, Chinese Academy of Science (2000)
Achievement Award of Quality Control, China National Petroleum Corporation (1995)
Professional Societies and Certifications
Board of Directors, Southern California Regional Chapter of the Society of Environmental Toxicology and Chemistry (SoCal SETAC) (2008-2010)
Hydrology & Watershed Management Committee, American Water Resources Association
American Chemical Society
Selected Presentations and Conference Proceedings
Lao W, Kim G, and Maruya K, 2017. Developing passive sampling methods for bioavailable current-used pesticides in sediment. 253rd American Chemical Society National Meeting & Exposition. San Francisco, California.
Maruya, K., Lao, W., Kim, G.B., Hong, Y., Gan, J. 2016. Extending the scope of passive sampling for contaminated sediments: standardizing ex situ methods for determination of Cfree. 7th SETAC World Congress/SETAC North America 37th Annual Meeting. November, Orlando, FL.
Flavetta G. , Lao W, K.A. Maruya. R.M. Burgess, L. Fernandez. 2016. Temporal and spatial monitoring of persistent organic pollutants on the Palos Verdes Shelf using two passive sampling methods. 7th SETAC World Congress/SETAC North America 37th Annual Meeting. November, Orlando, FL.
Hong Y, Lao W, David Tsukada D, Maruya K, Gan J. 2015. Evaluation of various polymers for equilibrium passive sampling of moderately hydrophobic emerging pollutants in water. Platform presentation at SETAC North America 36th annual meeting. November, Salt Lake City.
Lao W, Tsukada D, Maruya M. 2014. Incorporating performance reference compounds (PRCs) for passive sampling of organic contaminants using solid phase microextraction (SPME). Poster presentation at SETAC North America 35th annual meeting. November, Vancouver.
Lao W, Tsukada D, Maruya M. 2013. Correction for non-equilibrium measurement of hydrophobic organic chemicals using polyethylene passive samplers. Poster presentation at SETAC North America 34th annual meeting. November, Nashville.
Lao W, Tsukada D, Maruya M. 2012. Linkage between laboratory and field exposures of low-density polyethylene film as passive sampler in seawater. Poster presentation at SETAC North America 33rd annual meeting. November, Long Beach, CA.
Pirogovsky, M., A. Joyce, W. Lao, J. Haw, R. Adams, and K. Maruya. 2012. Calibrating Solid Phase Microextraction Passive Samplers for the In Situ Measurement of Contaminants in Southern California. American Chemical Society 243rd National Meeting & Exposition. San Diego, CA.
Joyce, A., M. Pirogovsky, W. Lao, J. Haw, R. Adams, and K. Maruya. 2012. Measurement of Polyethylene-Water partition Coefficients for In Situ Passive Sampling of Contaminants of Emerging Concern in Los Angeles, California. American Chemical Society 243rd National Meeting & Exposition. San Diego, CA.
Lao, W., L. Tiefenthaler, D. Greenstein, K.A. Maruya, S.M. Bay, and K.C. Schiff. 2011. Pyrethroids in Sediment from Southern California Coastal Environment-Bight’08 Survey. Presentation at the American Chemical Society 242nd National Meeting & Exposition. Denver, CO.
Adams, G.R, A.S. Joyce, M.S. Pirogovsky, W. Lao, J.F. Haw, and K.A. Maruya. 2011. Calibration and use of Polyethylene Passive Samplers for Quantifying Legacy and Emerging Contaminants of Concern at POTW Outfalls. Presentation at the Annual Water Environment Federation Technical Exhibition and Conference (WEFTEC). Los Angeles, CA.
Lao, W., L. Tiefenthaler, D. Greenstein, K.A. Maruya, S.M. Bay, and K.C. Schiff. 2011. Pyrethroids in Sediment from Southern California Coastal Environment-Bight’08 Survey. Presentation at SoCal SETAC Annual Meeting. Huntington Beach, CA.