Levels, sources and health risks of carbonyls and BTEX in the ambient air of Beijing, China

被引：167

作者：

Zhang, Yujie ^{[1
,2
]}

Mu, Yujing ^{[1
]}

Liu, Junfeng ^{[1
]}

Mellouki, Abdelwahid ^{[2
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

[2] CNRS ICARE, F-45071 Orleans 02, France

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2012年 / 24卷 / 01期

基金：

中国国家自然科学基金;

关键词：

carbonyls; BTEX; sources; exposure and risk assessment; Beijing; VOLATILE ORGANIC-COMPOUNDS; PEARL RIVER DELTA; SOURCE APPORTIONMENT; HYDROCARBONS; CHEMISTRY; CITY; ATMOSPHERE; INDOOR; VOCS;

D O I：

10.1016/S1001-0742(11)60735-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The atmospheric concentrations of carbonyls and BTEX (benzene, toluene, ethylbenzene, m,p-xylene and o-xylene) were measured simultaneously at a same sampling site in Beijing from September 2008 to August 2010. The average concentrations of the total measured carbonyls during autumn, winter, spring, and summer were 37.7, 31.3, 39.7, 50.5 mu g/m(3), respectively, and maximal values for their diurnal variations usually happened at noontime. In contrast to carbonyls, the average concentrations of the total measured BTEX during the four seasons were 27.2, 31.9, 23.2, 19.1 mu g/m(3), respectively, and minimal values for their diurnal variations always occurred in the early afternoon. The average concentration for carbonyls increased about 24% from September 2008-August 2009 to September 2009 August 2010, for BTEX, increased about 15%. Integrated life time cancer risks for three carcinogens (benzene, formaldehyde and acetaldehyde) in Beijing exceeded the value of 1E-06, and the hazard quotient (HQ) of non-cancer risk of exposure to formaldehyde exceeded unity.

引用

页码：124 / 130

页数：7