Abstract
Chemical contamination in river, ground water and sea was investigated from 1988 to 1992. Water and sediment samples collected in Tokyo area were analyzed by GC/MS, GC and HPLC. Over 40 chemicals were detected in water and/or sediment. Several distribution patterns of chemicals were observed in water and sediment media. In ground water, high levels of volatile chlorinated hydrocarbons were detected. Water and sediment samples from industrial area contained higher concentrations of chemicals than those from urban area. Pesticides and combustion products were observed in wide area. Contamination levels of each chemical in water and sediment samples indicated to be dependent on the physico-chemical property as well as the emission amount.
