Passive Air Sampling of Organochlorine Pesticides, Polychlorinated Biphenyls, and Polybrominated Diphenyl Ethers Across the Tibetan Plateau
| 作者: |
Wang, X.P., et al. |
| 期刊名称: |
Environmental Science & Technology |
| 发表年度: |
2010 |
| 卷: |
44 |
| 期: |
8 |
| 联系作者: |
|
| 页码: |
2988-2993 |
| 学科: |
|
| 外单位作者单位 : |
|
| 单位代码: |
|
| 全文链接: |
http://dx.doi.org/10.1021/es9033759 |
| 论文全文: |
|
| 第一作者所在部门: |
|
| 论文出处: |
|
| 论文类别: |
|
| 参与作者: |
|
| 其它备注: |
|
| 摘要: |
So far there are limited data on persistent organic pollutants (POPs) in the atmosphere of the Tibetan Plateau. XAD 2-resin based passive air samplers were therefore deployed for 1 year (between July 2007-June 2008) at 16 locations across the Tibetan Plateau. Based on previously reported sampling rates (R) derived in the north and south America, and their correlations with atmospheric temperature and pressure, R values in the present study were in the range of 2.2-3.3 m(3) d(-1) (average = 2.7 +/- 0.3). Derived air concentrations (pg/m(3)) ranged as follows: DDTs, 5-75; HCHs, 0.1-36; alpha-endosulfan, 0.1-10; HCB, 2.8-80; sum of 15 PCBs, 1.8-8.2; and sum of 9 PBDEs, 0.1-8.3. The highest DDTs occurred at Qamdo, where the sampling site is near to farm land, indicating the spatial distribution of DDTs across the plateau may be influenced by scattered local usage of DDT. Higher levels of HCHs were observed at sites with high elevation (>4000 m) and close to the China-India border, indicating possible long-range atmospheric transport. The highest levels of HCB, PCBs, and PBDEs were found at a site impacted by forest fire during the sampling campaign.
|
|
论文链接 |
|
