ORGANIC POLLUTANTS IN SOURCE WATER IN JIALING RIVER AND YANGTZE RIVER (CHONGQING SECTION)

The organic compounds in the Jialing River and the Yangtze River that are the source of drinking water for Chongqing City have not been found previously. The Solid Phase Extraction-GC/MS method was employed in this study. 100 or more organic compounds were identified in source water, 60 in the Jialing River and 50 in the Yangtze River, the most of which are phthalic acid, esters, keton, phenol, benzene and derivatives. The organic contamination character was different in the source water of the Jialing River and the Yangtze River. Organic contamination levels in Jialing River were much higher than in Yangtze River, and in spring were much higher than in summer in Jialing River, and vice verse in the Yangtze River. The compounds of higher rates detected were di-iso-butyl-phthalate( 100%), di-butyl-phthalate(100%),chloro-4-nitro-benzene(60%), 1,1,3,3,3-pentachloropropane (50%), butylated hydroxytoluene (40%). In addition, many metabolites on intermediate of methamidophos pesticide were detected in B water treatment, with the highest concentration of a single being 56.5μg/L.