Seasonal variation and positive matrix factorization result reveal the sources of giant pandas' exposure to POPs

doi:10.1016/j.ecoenv.2021.112363

	Seasonal variation and positive matrix factorization result reveal the sources of giant pandas' exposure to POPs
	Zhao, Yan 1,2; Chen, Yi-ping 1; Ma, Qing-yi 3
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2021-08-01
卷号	219 页码:8
关键词	PCBs OCPs Seasonal variation Source apportionment Diet management
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2021.112363
通讯作者	Chen, Yi-ping(chenyp@ieecas.cn)
英文摘要	Persistent organic pollutant (POPs) contamination was analyzed in samples collected from wild and captive giant pandas to characterize seasonal variation in concentrations of POPs and possible sources. POP concentrations in bamboo and fecal samples collected from captive pandas showed significant fluctuations compared with those collected from wild pandas in each season. The highest polychlorinated biphenyl (PCB) and organochlorine pesticide (OCP) concentrations were 1380 pg g-1 dw and 3140 pg g-1 dw, respectively, which were observed in captive bamboo samples in the summer. PCBs varied seasonally, whereas OCPs did not show apparent seasonal variation. Based on the seasonal variability, component analysis, and the positive matrix factorization results, we determined that the secondary volatilization of POPs during periods of high temperatures was the leading cause of the exposure of pandas to pollutants (45%), and atmospheric transport played a crucial role in the secondary distribution of pollutants in panda food. The other two sources of pollution were historical residues transmitted over long distances to protected areas (28%), as well as UP-POPs and new inputs from agricultural activities (27%). The concentrations of pollutants in bamboo shoots were significantly lower than those in bamboo. Therefore, bamboo shoots should be incorporated into the diet of captive pandas in the spring to reduce their exposure to pollutants. The absorption capacity of pollutants associated with the consumption of bamboo shoots was significantly lower than that associated with the consumption of bamboo. The diet of young captive pandas in the summer should also be managed with caution given their slightly stronger ability to absorb pollutants.
资助项目	State Key Laboratory of Loess and Quaternary Geology Open Fund (China)[SKLLQG1943] ; High-level Talents Special Support Program of Shaanxi Province
WOS关键词	PERSISTENT ORGANIC POLLUTANTS ; HISTORICAL EMISSION INVENTORY ; AIR-SOIL EXCHANGE ; POLYCHLORINATED-BIPHENYLS ; ORGANOCHLORINE PESTICIDES ; AILUROPODA-MELANOLEUCA ; PCB CONGENERS ; CHINA ; PATTERNS ; TRENDS
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000657192800002
资助机构	State Key Laboratory of Loess and Quaternary Geology Open Fund (China) ; High-level Talents Special Support Program of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/16702]
专题	地球环境研究所_生态环境研究室
通讯作者	Chen, Yi-ping
作者单位	1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shaanxi Wild Anim Res Ctr, Xian 710402, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yan,Chen, Yi-ping,Ma, Qing-yi. Seasonal variation and positive matrix factorization result reveal the sources of giant pandas' exposure to POPs[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,219:8.
APA	Zhao, Yan,Chen, Yi-ping,&Ma, Qing-yi.(2021).Seasonal variation and positive matrix factorization result reveal the sources of giant pandas' exposure to POPs.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,219,8.
MLA	Zhao, Yan,et al."Seasonal variation and positive matrix factorization result reveal the sources of giant pandas' exposure to POPs".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 219(2021):8.