气候变化领域集成服务门户(CCPortal): Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement

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DOI	10.1021/acs.est.7b01029
	Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement
	Gong, Ping; Wang, Xiaoping; Liu, Xiande; Wania, Frank
通讯作者	Wang, XP (通讯作者)
发表日期	2017
ISSN	0013-936X
EISSN	1520-5851
起始页码	5642
结束页码	5649
卷号	51 期号:10
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.
关键词	PERSISTENT ORGANIC POLLUTANTS CURRENT-USE PESTICIDES LONG-RANGE TRANSPORT ORGANOCHLORINE PESTICIDES POLYCHLORINATED-BIPHENYLS SPATIAL-DISTRIBUTION MOUNTAIN AIR ACCUMULATION
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000401674400032
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258996
推荐引用方式 GB/T 7714	Gong, Ping,Wang, Xiaoping,Liu, Xiande,et al. Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement[J]. 中国科学院青藏高原研究所,2017,51(10).
APA	Gong, Ping,Wang, Xiaoping,Liu, Xiande,&Wania, Frank.(2017).Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(10).
MLA	Gong, Ping,et al."Field Calibration of XAD-Based Passive Air Sampler on the Tibetan Plateau: Wind Influence and Configuration Improvement".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.10(2017).