Abstract：In order to study the difference of organochlorine pesticides (OCPs) between underground water and surface water in karst area. The concentrations of OCPs residues in the water samples were measured by gas chromatography equipped with miro-63Ni electron capture detector. The results showed that the total OCPs concentrations in the water ranged from 32.13-319.53ng/L with a mean value of 134.17ng/L. The concentrations of OCPs have obvious seasonal difference and the dry season is higher than the rainy seasons. The concentrations of OCPs, DDTs, HCHs in sj is higher than sc. Through the contrast the concentrations of OCPs in sc was lower than sj during the dry season and fluctuations are small during the rainy season. The concentrations of DDTs, HCHs in the two sits have no seasonal. The concentrations of DDTs mainly for sc were less than sj. The concentrations of HCHs mainly for sc were higher than sj. Compared with sc the minimum value of OCPs, DDTs, HCHs appeared hysteresis. The difference of OCPs between underground water and surface water is due to they are in different environment. The ratio of OCPs isomers implied that using mixture HCH caused HCHs pollution. Relative to the groundwater, surface water can more accurately reflect the source of HCHs. The historical usage of mixture DDTs maybe caused DDTspollution, and DDT was dechlorinated under aerobic conditions. Due to the effect of soil, the percentage composition of DDTs, HCHs has changed.
徐昕, 孙玉川, 王鹏, Md.Jahangir Alam. 岩溶区不同水体有机氯农药对比研究[J]. 中国环境科学, 2013, 33(9): 1630-1637.
XU Xin, SUN Yu-Chuan, WANG Peng, Md.Jahangir Alam. The comparison of organochlorine pesticides between underground water and surface water in karst area. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(9): 1630-1637.
