Abstract
Concentrations of 7 herbicides in water and fish from rivers and lakes were reviewed and the bioconcentration potential of the herbicides and their contamination in the field fish was evaluated. Although atrazine was detected at low concentrations with low frequency in water from rivers and lakes in Japan, but at high concentrations with high frequency in river waters in USA, China, Bulgaria, etc. and in lake waters from the Great Lakes, Canada. Simetryne was detected at high concentrations with high frequency in water from rivers and lakes in the paddy field areas of Japan. However, simetryne was reported only in China at the low concentration levels. Molinate and benthiocarb were similarly detected at high concentrations with high frequency in the paddy field areas of Japan, and at relatively high concentartions with frequency in river waters in USA and Italy. The concentrations of 6 herbicides except simazine in fish from rivers and lakes were estimated by the laboratory bioconcentration factors of these herbicides.
