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学科主题: 地理学::自然地理学
题名: Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement
作者: Gong, P (Gong, Ping)1, 2; Wang, XP (Wang, Xiaoping)1, 2; Liu, XD (Liu, Xiande)3; Wania, F (Wania, Frank)4
通讯作者: Wang, XP
关键词: PERSISTENT ORGANIC POLLUTANTS ; CURRENT-USE PESTICIDES ; LONG-RANGE TRANSPORT ; ORGANOCHLORINE PESTICIDES ; POLYCHLORINATED-BIPHENYLS ; SPATIAL-DISTRIBUTION ; MOUNTAIN AIR ; ATMOSPHERE ; ACCUMULATION
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
发表日期: 2017
DOI: 10.1021/acs.est.7b01029
卷: 51, 期:10, 页:5642-5649
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Engineering, Environmental; Environmental Sciences ; Engineering; Environmental Sciences & Ecology
研究领域[WOS]: Engineering; Environmental Sciences & Ecology
英文摘要: The passive air sampler based on XAD-2 resin (XAD-PAS) has proven useful for collecting atmospheric persistent organic pollutants (POPs) in remote regions. Whereas laboratory studies have shown that, due to the open bottom of its housing, the passive sampling rate (PSR) of the XAD-PAS is susceptible to wind and other processes causing air turbulence, the sampler has not been calibrated in the field at sites experiencing high winds. In this study, the PSRs of the XAD-PAS were calibrated at three sites on the Tibetan Plateau, covering a wide range in temperature (T), pressure (P) and wind speed (v). At sites with low wind speeds (i.e., in a forest and an urban site), the PSRs are proportional to the ratio T-175/P; at windy sites with an average wind speed above 3 m/s, the influence of v on PSRs cannot be ignored. Moreover, the open bottom of the XAD-PAS housing causes the PSRs to be influenced by wind angle and air turbulence caused by sloped terrain. Field calibration, wind speed measurements, and computational fluid dynamics (CFD) simulations indicate that a modified design incorporating an air spoiler consisting of 4 metal sheets dampens the turbulence caused by wind angle and sloped terrain and caps the PSR similar to 5 m(3)/day, irrespective of ambient wind. Therefore, the original XAD-PAS with an open bottom is suitable for deployment in urban areas and other less windy places, the modified design is preferable in mountain regions and other places where air circulation is complicated and strong.
语种: 英语
WOS记录号: WOS:000401674400032
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8242
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China.
4.Univ Toronto Scarborough, Dept Phys & Environm Sci, 1265 Mil Trail, Toronto, ON M1C 1A4, Canada.

Recommended Citation:
Gong, P ,Wang, XP ,Liu, XD ,et al. Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(10):5642-5649.
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