DAVID T. TSUKADA - Senior Research Technician
EDUCATION:
B.S., Marine Biology, California State University, Long Beach, 1975
AREAS OF EXPERTISE:
David is responsible for processing all samples and keeping the Chemistry laboratory maintained and in operational order. He is knowledgeable in all organic extraction procedures for sediment, tissue and water samples including use of the Elemental analyzers (Total organic carbon, Dissolved organic carbon). He is responsible for the development and production of SPME (Solid Phase Microextraction) and PED (Polyethylene Device) sampling devices for use in field applications. He is also responsible for conducting experiments for method validation and updating all standard operating procedures. He is heavily involved with field work at sea and on land which includes sediment sampling, fish and invertebrate collecting, identification of the species, water quality sampling (sea/river), deployment of various instruments at sea and air sampling.
With 20 years of experience, he is knowledgeable about all aspects of sampling soft bottom marine communities. His experience includes supervision of day to day operations in the benthic laboratory; oversight of field operations, assuring that samples for biological and chemical analysis are properly collected and transported; and laboratory processing of biological samples, including quality assurance and quality control. He has helped to develop and implement procedures for sorting, measuring and identifying benthic grab samples. David has taxonomic expertise in Mollusca and Ophiuroidea and extensive knowledge of other groups, including Arthropoda, Polychaeta, and Echinoderms. In addition to his responsibility for chemistry operations and previous experience with benthic operations, David has performed other laboratory analyses, including analysis of sediment grain size and total volatile solids. He has assisted in sediment toxicity experiments on marine invertebrates and dissected fish and invertebrates for analysis of tissue contaminants.
PROFESSIONAL EXPERIENCE:
Senior Research Technician, Southern California Coastal Water Research Project Authority. Costa Mesa, CA. 1978-Present
Laboratory Technician, Central Analytical Laboratory Service, Inc. Pico Rivera, CA. 1975-1978
PUBLICATIONS:
Lao, W., D. Tsukada, D.J. Greenstein, S.M. Bay, and K.A. Maruya. 2010. Analysis, occurrence and toxic potential of pyrethroids and fipronils in Ballona estuary sediments. Environmental Toxicology and Chemistry 29:843-851.
Sabin, L.D., K. Maruya, W. Lao, D. Diehl, D. Tsukada, K.D. Stolzenbach, and K.C. Schiff. 2010. Exchange of polycyclic aromatic hydrocarbons between the atmosphere, water and sediment in coastal embayments of southern California. Environmental Toxicology and Chemistry 29:265-274.
Maruya, K.A., E.Y. Zeng, D. Tsukada, and S.M. Bay. 2009. A passive sampler based on solid phase microextraction (SPME) for quantifying hydrophobic organic contaminants in sediment porewater. Environmental Toxicology and Chemistry 28:733-740.
Yang, Z.Y., K.A. Maruya, D.J. Greenstein, D. Tsukada, and E.Y. Zeng. 2008. Experimental verification of a model describing solid phase microextraction (SPME) of freely dissolved organic pollutants in sediment porewater. Chemosphere 72:1435-1440.
Zeng, E.Y., D. Tsukada, D.W. Diehl, J. Peng, K. Schiff, J.A. Noblet, and K.A. Maruya. 2005. Distribution and mass inventory of total Dichlorodiphenyldichloroethylene in the water column of the Southern California Bight. Environmental Science and Technology 39:8170-8170.
Zeng, E.Y., D. Tsukada, J.A. Noblet, and J. Peng. 2005. Determination of polydimethylsiloxane-seawater distribution coefficients for polychlorinated biphenyls and chlorinated pesticides by solid-phase microextraction and gas chromatography-mass spectrometry. Journal of Chromatography A 1066:165-175.
Zeng, E.Y., D. Tsukada, and D.W. Diehl. 2004. Development of a solid-phase microextraction-based method for sampling of persistent chlorinated hydrocarbons in an urbanized coastal environment. Environmental Science and Technology 38:5737-5743.
Zeng, E.Y., J. Peng, D. Tsukada, and T.L. Ku. 2002. In situ measurements of polychlorinated biphenyls in the waters of San Diego Bay, California. Environmental Science and Technology 36:4975-4980.
Thompson, B.E., D.T. Tsukada, and J.D. Laughlin. 1991. Megabenthic assemblages of coastal shelves, slopes and basins off southern California. Bulletin of the Southern California Academy of Sciences 92:25-42.
Thompson, B.E., S.M. Bay, J.W. Anderson, J.D. Laughlin, D.J. Greenstein, and D.T. Tsukada. 1989. Chronic effects of contaminated sediments on the urchin Lytechinus pictus. Environmental Toxicology and Chemistry 8:629-637.
Thompson, B.E., G.F. Jones, J.D. Laughlin, and D.T. Tsukada. 1987. Distribution abundance and size composition of Echinoids from basin slopes off southern California. Bulletin of the Southern California Academy of Sciences 86:113-125.
TECHNICAL REPORTS:
Lao, W., D. Tsukada, D.J. Greenstein, S.M. Bay, and K.A. Maruya. 2009. Analysis, occurrence and toxic potential of pyrethroids and fipronils in Ballona estuary sediments. pp. 277-289 in: K.C. Schiff and K. Miller (eds.), Southern California Coastal Water Research Project 2009 Annual Report. Costa Mesa, CA.
Sabin, L.D., K.A. Maruya, W.J. Lao, D. Diehl, D. Tsukada, K.D. Stolzenbach, and K.C. Schiff. Exchange of polycyclic aromatic hydrocarbons between the atmosphere, water and sediment in southern California coastal embayments. pp. 51-64 in: S.B. Weisberg and K. Miller (eds.), Southern California Coastal Water Research Project 2008 Annual Report. Costa Mesa, CA.
Peng, J., K. Maruya, K. Schiff, D. Tsukada, D. Diehl, W. Lao, J. Gan, and E. Zeng. 2007. Organochlorine pesticides and other trace organic contaminants in the Upper Newport Bay watershed. Technical Report 512. Southern California Coastal Water Research Project. Costa Mesa, CA.
Bergen M. and D. Tsukada. 1995. Sediment grain size: results of an interlaboratory intercalibration experiment. pp. 63-70 in: J.N. Cross, C. Francisco, and D. Hallock (eds.), Southern California Coastal Water Research Project 1993-1994 Annual Report. Westminster, CA.
Thompson, B., D. Tsukada, and D. O' Donohue. 1993. 1990 Reference site survey. Technical Report 269. Southern California Coastal Water Research Project. Long Beach, CA.
Thompson, B., J.D. Laughlin, and D.T. Tsukada. 1987. 1985 Reference site survey. Technical Report 202. Southern California Coastal Water Research Project. Long Beach, CA.
Thompson, B.E., J.D. Laughlin, and D.T. Tsukada. 1984. Ingestion and oxygen consumption by slope Echinoids. pp. 93-107 in: W. Bascom (ed.), Southern California Coastal Water Research Project 1983-1984 Biennial Report. Long Beach, CA.
Thompson, B.E., J.N. Cross, J.D. Laughlin, G.P. Hershelman, R.W. Gossett, and D.T. Tsukada. 1984. Sediment and biological conditions on coastal slopes. pp. 37-67 in: W. Bascom (ed.), Southern California Coastal Water Research Project 1983-1984 Biennial Report. Long Beach, CA.
Word, J.Q., P.L. Striplin, and D.T. Tsukada. 1979. Effects of screen size and replication on the infaunal trophic index. pp. 123-130 in: W. Bascom (ed.), Southern California Coastal Water Research Project 1979-1980 Biennial Report. Long Beach, CA.