title: Organochlorine pesticides and polychlorinated biphenyls in air, grass and yak butter from Namco in the central Tibetan Plateau.
abstract: Limited studies on bioaccumulation of persistent organic pollutants (POPs) along terrestrial food chains were conducted. The food chain air-grass-yak (butter) in the pasture region of Namco in the central Tibetan Plateau (TP) was chosen for study. The air, grass and butter POPs in the TP were at the lower end of the concentrations generally found around the globe. HCB was the main pollutant in air and butter. Besides HCB, β-HCH and p,p'-DDE were the other major compounds in butter. Along the food chain, DDTs and high molecular weight PCB-138, 153 and 180 had higher Biological Concentration Factor values. The air-butter transfer factors of POPs were derived and demonstrated the practical advantage in predicting the atmospheric OCPs and PCBs to the TP. This study sheds light on the transfer and accumulation of POPs along the terrestrial food chain of the TP.
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Chuanfei
authors.initials: C
authors.lastname: Wang
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, China. Electronic address: wangxp@itpcas.ac.cn.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Wang
authors.affiliation: China University of Mining and Technology, Beijing 100083, China.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Yuan
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Ren
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Gong
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000818:Animals; D002079:Butter / Q000032:analysis*; D002417:Cattle; D003633:Dichlorodiphenyl Dichloroethylene; D004784:Environmental Monitoring; D001556:Hexachlorocyclohexane; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D006109:Poaceae / Q000737:chemistry*; D011078:Polychlorinated Biphenyls; D018609:Tibet
chemical_list: D000393:Air Pollutants; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D003633:Dichlorodiphenyl Dichloroethylene; D001556:Hexachlorocyclohexane; C029790:2,2',3',4,4',5-hexachlorobiphenyl; D002079:Butter; D011078:Polychlorinated Biphenyls; C023888:beta-hexachlorocyclohexane
keywords: Air–butter transfer factor (TF(A:B)); Bioaccumulation; Persistent organic pollutants (POPs); Tibetan Plateau (TP)