College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, 453003, China.
Environ Monit Assess. 2012 May;184(5):3085-94. doi: 10.1007/s10661-011-2173-9. Epub 2011 Jun 29.
As facile "environmental media", the outdoor dust may reflect the changes of contaminants in environment more promptly. In the present study, selected organochlorine contaminants (OCs) include hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), hexachlorobenzene (HCB), and pentachlorobenzene (PeCB) were detected in 20 outdoor dust samples collected from Xinxiang City. The concentrations of ΣHCHs, ΣDDTs, HCB, and PeCB in dust were in the range of 0.18-5.05 ng/g dry weight, 0.44-13.50 ng/g dry weight, 0.13-51.61 ng/g dry weight and ND-0.74 ng/g dry weight, respectively. Long-range transport, historical use, and recent impact of impure pesticides might be the main sources of OCs in the outdoor dust. The results of this study indicated that impure pesticide application maybe an important source of DDTs and HCB in the environment.
作为便捷的“环境介质”，室外灰尘可能更能迅速反映环境污染物的变化。在本研究中，选择了有机氯污染物（OCs），包括六六六（HCHs）、滴滴涕（DDTs）、六氯苯（HCB）和五氯苯（PeCB），检测了新乡市 20 个室外灰尘样本中的含量。灰尘中ΣHCHs、ΣDDTs、HCB 和 PeCB 的浓度范围分别为 0.18-5.05ng/g 干重、0.44-13.50ng/g 干重、0.13-51.61ng/g 干重和 ND-0.74ng/g 干重。远距离传输、历史使用和近期受不纯农药的影响可能是 OCs 在室外灰尘中的主要来源。本研究结果表明，不纯农药的使用可能是 DDTs 和 HCB 在环境中的一个重要来源。
