气候变化领域集成服务门户(CCPortal): Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations and Model-Based Flux Estimation

CCPortal

DOI	10.1021/acs.est.9b01223
	Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations and Model-Based Flux Estimation
	Gong, Ping; Wang, Xiaoping; Pokhrel, Balram; Wang, Hailong; Liu, Xiande; Liu, Xiaobo; Wania, Frank
通讯作者	Wang, XP (通讯作者)
发表日期	2019
ISSN	0013-936X
EISSN	1520-5851
起始页码	6773
结束页码	6783
卷号	53 期号:12
英文摘要	High mountains can trap semivolatile chemicals, such as persistent organic pollutants (POPs), and hinder their dispersion. However, both deep convection and mountain valleys can facilitate POPs' transport over mountains, which have not been investigated before. In this study, a three-year sampling campaign along a south-north altitudinal transect (100-5200m) across the central Himalayas, coupled with a multicompartment contaminant fate model, was conducted for describing the transport processes of POPs. The results show that POPs emitted in the lowlands of the Himalayas can be transported to high altitudes and further to the inner part of the Tibetan Plateau. Modeling suggests that more than 90% of POPs are trapped along the way due to gaseous deposition to soil/foliage and rainfall scavenging; while 2 x 10(-3) to 1 x 10(-1) Giga-grams/year of POPs are transported across the Himalayas. The transport flux along valleys is 2-3 times higher than that across the mountain ridge. However, due to the limited spatial coverage of mountain valleys, the amount of POPs transported through valleys only accounts for a small part of the total transport. This study shows that POPs can overcome the blocking effect of the Himalayas, and high altitude transport across the mountain ridge is the dominant transport pathway.
关键词	PERSISTENT ORGANIC POLLUTANTS POLYCYCLIC AROMATIC-HYDROCARBONS POLYBROMINATED DIPHENYL ETHERS LONG-RANGE TRANSPORT INDIAN CITIES LEVELS TIBETAN PLATEAU POLYCHLORINATED-BIPHENYLS SEASONAL-VARIATIONS SPATIAL VARIATION HEAVY-METALS
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:000472682900020
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/259637
推荐引用方式 GB/T 7714	Gong, Ping,Wang, Xiaoping,Pokhrel, Balram,et al. Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations and Model-Based Flux Estimation[J]. 中国科学院青藏高原研究所,2019,53(12).
APA	Gong, Ping.,Wang, Xiaoping.,Pokhrel, Balram.,Wang, Hailong.,Liu, Xiande.,...&Wania, Frank.(2019).Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations and Model-Based Flux Estimation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(12).
MLA	Gong, Ping,et al."Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations and Model-Based Flux Estimation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.12(2019).