Variation of Endosulfan Residues in Water and Sediment Taken from the Moss Landing Drainage of Monterey County

摘要

Data from previous studies conducted by the State Mussel Watch Program implied increasing endosulfan residues in mollusks used as indicator organisms of chemical contamination in the Moss Landing Drainage Area of Monterey County in California. As a first step in confirming a chronological trend, studies were conducted by the California Departments of Food and Agriculture and Fish and Game to determine within-site variability of endosulfan concentrations, and to estimate sample size necessary for future research. Personnel from the Environmental Hazards Assessment Program of the California Department of Food and Agriculture collected sediment and water samples while personnel from the Pesticide Investigations Unit of the California Department of Fish and Game collected mollusk and fish samples at the same sites in a coordinated effort.