SURVEY ON TYPICAL ORGANIC POLLUTANTS AND HEALTH RISKS OF MAIN WATER SOURCES IN YELLOW RIVER BASIN

To understand the typical organic pollutant contamination status of the main source water in Yellow River basin, samples were collected from fifty source water points (including reservoir and river) in Yellow River basin. The samples were analyzed for the representative organic pollutants, including benzene homologous, chlorobenzene compounds, organophosphorous pesticides, and nitrobenzene compounds, total of 17 compounds. It was observed that all concentrations of the 17 compounds in the fifty source waters were less than the limits of Chinese surface water quality standards. Benzene, toluene, nitrobenzene, p-nitrochlorobenzene, 2,4-dinitrotoluene and 2,4-dinitrochlorobenzene, dichlorvos, demeton, dimethoate methyl parathion, malathion and parathion were more frequently detected in the main source water of Yellow River basin. The results of detection rate of target compounds suggested that the organic pollution had been popular in the source water of the Yellow River basin.