气候变化领域集成服务门户(CCPortal): Selected Organochlorine Pesticides and Polychlorinated Biphenyls in Urban Atmosphere of Pakistan: Concentration, Spatial Variation and Sources

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DOI	10.1021/es404711n
	Selected Organochlorine Pesticides and Polychlorinated Biphenyls in Urban Atmosphere of Pakistan: Concentration, Spatial Variation and Sources
	Nasir, Jawad; Wang, Xiaoping; Xu, Baiqing; Wang, Chuanfei; Joswiak, Daniel R.; Rehman, Said; Lodhi, Arifa; Shafiq, Shoaib; Jilani, Rehmatullah
通讯作者	Wang, XP (通讯作者)
发表日期	2014
ISSN	0013-936X
EISSN	1520-5851
起始页码	2610
结束页码	2618
卷号	48 期号:5
英文摘要	Robust knowledge on the occurrence and distribution of persistent organic pollutants (POPs) in the atmosphere of low-latitude regions is inevitable to forecast their transportation to pristine ecosystem and assess toxicological impacts upon local biota. Despite the earlier revelation of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in soils/sediments and water bodies in Pakistan, knowledge about atmospheric levels and sources of these POPs remains limited. For the first time, a network of XAD resin-based passive air samplers (PAS) was established across megacities of Pakistan, i.e., Karachi, the coastal city, and Lahore, lying in an agricultural region. Typical geographical locations of the two cities allowed assessing the influence of source regions on the occurrence and distribution patterns of selected POPs. Average concentrations (ng/PAS) in both cities ranged as endosulfan 39-101, DDTs 63-92, HCHs 33-65, heptachlor 10-26, and PCBs 48-61. High concentrations of endosulfan and lindane as observed throughout Lahore were certainly due to their ongoing applications in surrounding agricultural fields. Lower proportions of parental DDTs as compared to their metabolites were observed in both cities, suggesting inputs of DDTs from older or secondary sources. Owing to ultimate discharge of country's agricultural/industrial waste through river streams in to Arabian Sea, the coastal region of Karachi was found potential source of weathered POPs that could be dissipated at regional/global scales by maritime advections. The study contributes to the pool of information on fate and geographical distribution of POPs in subtropical developing countries.
关键词	PERSISTENT ORGANIC POLLUTANTS AIR WATER PCBS SOIL SEDIMENTS EXCHANGE PUNJAB DDT VARIABILITY
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:000332494200012
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/258288
推荐引用方式 GB/T 7714	Nasir, Jawad,Wang, Xiaoping,Xu, Baiqing,et al. Selected Organochlorine Pesticides and Polychlorinated Biphenyls in Urban Atmosphere of Pakistan: Concentration, Spatial Variation and Sources[J]. 中国科学院青藏高原研究所,2014,48(5).
APA	Nasir, Jawad.,Wang, Xiaoping.,Xu, Baiqing.,Wang, Chuanfei.,Joswiak, Daniel R..,...&Jilani, Rehmatullah.(2014).Selected Organochlorine Pesticides and Polychlorinated Biphenyls in Urban Atmosphere of Pakistan: Concentration, Spatial Variation and Sources.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(5).
MLA	Nasir, Jawad,et al."Selected Organochlorine Pesticides and Polychlorinated Biphenyls in Urban Atmosphere of Pakistan: Concentration, Spatial Variation and Sources".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.5(2014).