Distribution of polychlorinated dibenzo-p-dioxins and dibenzofurans in ambient air of different regions in China

被引：26

作者：

Chen, Tong ^{[1
]}

Li, Xiaodong ^{[1
]}

Yan, Jianhua ^{[1
]}

Lu, Shengyong ^{[1
]}

Cen, Kefa ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Thermal Power Engn, State Key Lab Energy Clean Utilizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

ATMOSPHERIC ENVIRONMENT | 2011年 / 45卷 / 36期

关键词：

PCDD/Fs; Ambient air; Homologue profile; Congener profile; China; PCDD/F LEVELS; ATMOSPHERE; ENVIRONMENT; DEPOSITION; PCBS;

D O I：

10.1016/j.atmosenv.2011.08.013

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were determined in fourteen ambient air samples collected in twelve cities of five provinces and one large municipality in China. The PCDD/F concentrations varied from 2.6 to 120 pg m(-3) (or from 0.04 to 1.93 pg I-TEQ m(-3)). Generally, TCDF was the dominant homologue group and as a rule the homologue concentration of PCDF decreased with rising chlorine substitution number of PCDF. In all cases 2,3,4,7,8-PeCDF was the most important contributor to the I-TEQ value, accounting for 35-57% of the total I-TEQ value. Higher PCDD/F levels in ambient air were found during winter. The highest PCDD/F levels were found in Chengdu, Sichuan Province. In general, the PCDD/F levels in this study were in the same range as in other studies in China. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：6567 / 6575

页数：9

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