Environ. Sci. Technol. 2005, 39, 8170-8176
Distribution and Mass Inventory of Total Dichlorodiphenyldichloroethylene in the Water Column of the Southern California Bight E D D Y Y . Z E N G , * ,† D A V I D T S U K A D A , ‡ DARIO W. DIEHL,‡ JIAN PENG,‡ KENNETH SCHIFF,‡ JAMES A. NOBLET,§ AND KEITH A. MARUYA‡ State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China, Southern California Coastal Water Research Project, 7171 Fenwick Lane, Westminster, California 92683, and Department of Chemistry, California State UniversitysSan Bernardino, San Bernardino, California 92407
A large-scale survey on the area and depth stratified distribution of dichlorodiphenyltrichloroethane (DDT; mainly p,p′- and o,p′-dichlorodiphenyldichloroethylene (DDE)) contamination in the water column of the Southern California Bight (SCB) was conducted in 2003-2004 using a solidphase microextraction-based sampling technique. Dissolvedphase DDEs were clearly widespread, with the central SCB containing the highest levels, and the Palos Verdes Shelf sediments have remained the dominant source of DDT compounds to the SCB. The p,p′- and o,p′-DDE concentrations ranged from
