Altitudinal distributions of PCDD/Fs, dioxin-like PCBs and PCNs in soil and yak samples from Wolong high mountain area, eastern Tibet-Qinghai Plateau, China

被引：63

作者：

Pan, Jing ^{[1
]}

Yang, Yongliang ^{[1
]}

Zhu, Xiaohua ^{[1
]}

Yeung, Leo Wai Yin ^{[2
]}

Taniyasu, Sachi ^{[3
]}

Miyake, Yuichi ^{[3
]}

Falandysz, Jerzy ^{[4
]}

Yamashita, Nobuyoshi ^{[3
]}

机构：

[1] Natl Res Ctr Geoanal, Beijing 100037, Peoples R China

[2] Univ Toronto, Dept Chem, Toronto, ON M5S 1A1, Canada

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

[4] Univ Gdansk, Inst Environm Sci & Publ Hlth, PL-80952 Gdansk, Poland

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2013年 / 444卷

基金：

中国国家自然科学基金;

关键词：

PCDD/Fs; Dioxin-like PCBs; PCNs; Altitudinal distribution; Soils; Yak; PERSISTENT ORGANIC POLLUTANTS; DIBENZO-P-DIOXINS; POLYCHLORINATED NAPHTHALENES; ORGANOCHLORINE COMPOUNDS; CONTAMINANTS; DEPOSITION;

D O I：

10.1016/j.scitotenv.2012.11.013

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Topsoil along the altitudinal gradient (2086-4487 m above sea level) and yak samples, collected from Wolong high mountain area of Sichuan Province, western China, were analyzed for polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), dioxin-like polychlorinated biphenyls (dl-PCBs) and polychlorinated naphthalenes (PCNs) using HRGC-HRMS. The total concentrations of PCDD/Fs, dl-PCBs, and PCNs in soils were: 2.48-4.30 pg g(-1) dw (dry weight), 7.6-10.5 pg g(-1) dw, and 13.0-29.0 pg g(-1) dw, respectively; the greatest concentrations were found at sampling sites of 3927 m, 4487 m and 3345 m, correspondingly. The total PCDD/Fs and dl-PCBs concentrations showed positive correlations with increasing altitudinal gradient. The congener profiles of both 2,3,7,8-PCDD/Fs and dl-PCBs at different altitudes showed similar patterns. PCNs were dominated by Tri-CNs. The long-range atmospheric transport and subsequent aerial deposition are likely the sources for these POPs in area examined. The total TEQs in soils were in the range of 028-0.42 pg g(-1) dw, and the total TEQs in the yak muscle and fatty tissue samples were 3.81-4.09 pg TEQ g(-1) lipid weight. The daily intake of TEQs was estimated to be below the WHO's tolerable daily intake according to the local people's dietary habits in Wolong area, which is unlikely to cause any adverse health effects to the yak muscle consuming people. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：102 / 109

页数：8