Home > Research > Publications & Outputs > Passive air sampling of organochlorine pesticid...


Text available via DOI:

View graph of relations

Passive air sampling of organochlorine pesticides, polychlorinated biphenyls, and polybrominated diphenyl ethers across the Tibetan plateau

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>15/04/2010
<mark>Journal</mark>Environmental Science and Technology
Issue number8
Number of pages6
Pages (from-to)2988-2993
Publication StatusPublished
Early online date18/03/10
<mark>Original language</mark>English


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 m3 d1 (average = 2.7 ± 0.3). Derived air concentrations (pg/m3) ranged as follows: DDTs, 5?75; HCHs, 0.1?36; α-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.