Altitude Distributions and Source Analysis of OCPs and PCBs in Surface Soils of Changbai Mountain, Northeast China
Altitude Distributions and Source Analysis of OCPs and PCBs in Surface Soils of Changbai Mountain, Northeast China
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DOI：
10.1007/s00128-017-2084-8
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发表时间：
2017-04
影响因子：
2.7
通讯作者：
Xiaochun Wang;Shu Chen;K. Wan;Xiaocai Yin;Xiaohua Zhu;Jing Pan;Yongliang Yang
中科院分区：
文献类型：
--
作者：
Xiaochun Wang;Shu Chen;K. Wan;Xiaocai Yin;Xiaohua Zhu;Jing Pan;Yongliang Yang
采用气相色谱-电子捕获检测器（GC-ECD）对长白山表层土壤中的有机氯农药和多氯联苯进行了定量分析，并对长白山表层土壤中有机氯农药和多氯联苯的海拔分布和可能的污染源进行了分析。结果表明，该海域水体中∑HCHs、∑DDTs和∑ 7 PCBs的浓度分别为3.09-25.6、0.96-19.4和7.32-26.1 ng/g dw。α-HCH、β-HCH、p，p′-DDT、p，p′-DDE、PCB 101、138、153和180的浓度随海拔升高而升高。长白山表层土壤中∑ 7 PCBs含量显著高于中国背景区。低挥发性多氯联苯异构体浓度与海拔高度呈正相关。这些污染物可能来源于邻近的工业和农业区，通过大气输送和湿降水的冷捕效应。另外，DDTs对鸟类和土壤生物可能造成一定的潜在生态风险，不排除在长白山周边地区使用林虫。
Organochlorine pesticides and polychlorinated biphenyls in surface soils of Changbai Mountain, Northeastern China, have been quantified by gas chromatography with electron capture detector and the altitude distributions and possible pollution sources were analyzed. The concentrations of ∑HCHs, ∑DDTs and ∑7PCBs were in the range of 3.09–25.6, 0.96–19.4 and 7.32–26.1 ng/g dw, respectively. The concentration ofα-HCH,β-HCH,p,p′-DDT,p,p′-DDE, PCB 101, 138, 153, and 180 showed increasing trends with altitude. ∑7PCBs in surface soils of Changbai Mountain were significantly higher than that in Chinese background areas. The concentration of lower volatile PCB isomers showed positive correlation with altitude. These pollutants may originate from the adjacent industrial and agricultural areas via atmospheric transport and cold-trapping effect through wet precipitation. Additional, DDTs may cause a certain potential ecological risks on birds and soil organisms and the usage of lindane in the adjacent areas cannot be excluded in Changbai Mountain.