Abstract:Characteristics and sources of dissolved organochlorine pesticides (OCPs) in the rainwater in Beijing were analyzed. Seven kinds of OCPs were detectable from May 2006 to November 2007. Mean concentrations of HCHs, DDTs, heptachlor, chlordane, hexachlorobenzene, aldrin and dieldrin in the dissolved phase were (6.66 ± 4.99) ng/L, (10.30 ±12.39) ng/L, (2.62 ±1.87) ng/L, (6.54 ± 4.58) ng/L, (3.99 ±3.02)ng/L, (2.10 ±1.40) ng/L and (2.25 ± 1.58) ng/L, respectively. OCPs Contents decreased during the study period, indicating the previous controlling measurement taking effects. By analyzing the source, it was notable that there were still some possible inputs of γ-HCH and dicofol. Every compound detected had significant correlation with each others indicating the common source of OCPs in the rainwater in Beijing. The total concentration of OCPs had no correlation with the sampling temperature while had weak reverse correlations with the mount of precipitation and relative humidity. The deposition flux was significantly related to the concentrations of targets in the atmosphere while weakly to the mount of precipitation.
许国飞, 马玲玲, 徐殿斗, 李淑珍, 姚多喜, 石伟群. 北京地区雨水中溶解态有机氯农药的特征及源解析[J]. 中国环境科学, 2009, 29(11): 1153-1157.
XU Guo-Fei, MA Ling-Ling, XU Dian-Dou, LI Shu-Zhen, YAO Duo-Xi, SHI Wei-Qun. Characteristics and sources of dissolved organochlorine pesticides in the rainwater in Beijing.. CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(11): 1153-1157.