本文選題：有機氯農(nóng)藥 + 多氯聯(lián)苯��； 參考：《中國環(huán)境科學(xué)》2016年09期

【摘要】：在夏、冬兩季對北京地區(qū)密云,潮白河,玉淵潭和通惠河等地表水中17種有機氯農(nóng)藥(OCPs)和84種多氯聯(lián)苯(PCBs)的含量進行了分析及來源解析.實驗結(jié)果表明,OCPs總量在7.86~53.1ng/L之間,平均值為(16.9±14.6)ng/L.PCBs總量在2.99~32.7ng/L之間,平均濃度為(10.9±10.4)ng/L.HCHs,硫丹,DDTs和HCB是主要的OCPs污染物,其含量分別為(13.9±11.5)ng/L,(2.20±2.01)ng/L,(0.63±1.51)ng/L和(0.12±0.14)ng/L.α-HCH/γ-HCH平均比值為1.53,小于工業(yè)HCH中比值4~7,表明北京地區(qū)地表水中存在林丹的使用.而DDT/(DDD+DDE)比值1.22,表明北京地區(qū)并無新的DDTs污染源輸入環(huán)境.PCBs以低氯代聯(lián)苯為主,其中二氯,三氯,四氯和五氯聯(lián)苯總和占∑84PCBs總量的79.2%.北京地區(qū)地表水中不同氯取代數(shù)PCBs組成與我國歷史PCB產(chǎn)品組成相符,均以低氯代聯(lián)苯為主,表明北京地區(qū)地表水中PCBs污染來源為歷史使用.相比于國內(nèi)其他區(qū)域水質(zhì)而言,北京地區(qū)地表水OCPs和PCBs污染水平較低.
[Abstract]:In summer and winter, the contents of 17 organochlorine pesticides (OCPs) and 84 polychlorinated biphenyls (PCBs) in surface water of Miyun, Chaobaihe, Yuyuantan and Tonghui in Beijing were analyzed and their sources were analyzed. The results showed that the total amount of OCPs was in the range of 7.86~53.1ng/L, the average value was 16.9 鹵14.6)ng/L.PCBs, and the average concentration was 10.9 鹵10.4 ng / L HCHs. Endosulfan DDTs and HCB were the main OCPs pollutants. The average ratios of 偽 -HCH / 緯 -HCH in surface water in Beijing area were 1.53, which were lower than that in industrial HCH, which indicated that the use of Lin Dan existed in surface water in Beijing area, and the average ratio of 偽 -HCH / 緯 -HCH was 1.53, which was 2.20 鹵2.01ng 路L ~ (-1) 1.51)ng/L and 0.12 鹵0.14ng / L ~ (-1) ~ (-1) ~ 0.12 鹵0.14ng / L ~ (-1) respectively, which was lower than that in industrial HCH. However, the ratio of DDT/(DDD to DDE is 1.22, which indicates that there is no new DDTs pollution source in Beijing. The low chlorinated biphenyls (LCB) is the main input environment. The sum of dichloro, trichloro, tetrachlorobenzene and pentachlorobenzene accounts for 79.2% of 鈭，

本文編號：1829228