THE TYPICAL ORGANIC POLLUTANTS HEALTH RISK RESEARCH OF THE MAIN SOURCE WATER IN YELLOW RIVER BASIN

摘要

The 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, especially the organophosphorous pesticides, the detection rates of dichlorvos, demeton, methyl parathion, malathion and parathion are all much higher than 90% in the fifty source water points. The health risk assessment results suggested that the noncarcinogenic risk HQ values of the target compounds were less than one, and the cancer risk values of most source water sites were much less than the 1×10-6, only the sites 23,24,25.26 cancer risk values were much higher than the 1×10~(-6), which indicated that the heath risk produced by the target compounds in the most source water was in a acceptable level.