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题名:
Polycyclic aromatic hydrocarbons in the atmosphere of Shanghai, China
作者: Chen, YingJun(陈颖军)2; Feng, Yanli1; Xiong, Shengchun1; Liu, Dongyan2; Wang, Gang(王刚)2; Sheng, Guoying3; Fu, Jiamo3
刊名: ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN号: 0167-6369
出版日期: 2011
卷号: 172, 期号:1-4, 页码:235-247
关键词: PAHs ; Concentration ; Seasonal trends ; Gas-particle partitioning ; Source apportionment ; Shanghai
学科分类: Environmental Sciences
产权排序: [Feng, Yanli; Xiong, Shengchun] Shanghai Univ, Sch Environm & Chem Engn, Inst Environm Pollut & Hlth, Shanghai 200444, Peoples R China; [Chen, Yingjun; Liu, Dongyan; Wang, Gang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China; [Sheng, Guoying; Fu, Jiamo] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
通讯作者: Feng, YL, Shanghai Univ, Sch Environm & Chem Engn, Inst Environm Pollut & Hlth, Shanghai 200444, Peoples R China.fengyanli@shu.edu.cn
作者部门: 污染过程与控制实验室 
中文摘要: Shanghai is the largest industrial and commercial city in China, and its air quality has been concerned for several years. However, scarce study had been made on the seasonal levels of atmospheric polycyclic aromatic hydrocarbons (PAHs), together with their gas-particle partitioning and potential emission sources. Based on an intensive sampling campaign at urban and suburban areas in Shanghai during four seasons of 2005-2006, this study presented the measurement of PAH concentrations in both particulate and gaseous phases, as well as seasonal and spatial variability. The results showed that the annual PAH levels (gas + particle) were 167 +/- 109 ng m(-3) at the urban site and 216 +/- 86.5 ngm(-3) at the suburban site. Gaseous PAHs (>70%) dominated the total PAH mass at both sites, while particulate PAHs contributed more than 90% of the toxic power according to benzo(a) pyreneequivalent carcinogenic parameter. Different seasonal trend of PAH concentrations was observed between the two sites, and it may be explained by complicated factors such as sampling heights, local/regional emission sources, and climatic conditions. The gas-particle partitioning of PAHs in all samples was calculated, and strong linear correlations between log K-p and log P-L(o) were observed, with shallower slopes (m(r)) at the suburban site than the urban one and in warm season than the cold months, indicating the different equilibrium conditions of PAHs in spatial and seasonal scales in Shanghai. The slope (m(r) = -0.96) and correlation coefficient (R-2 = 0.81) for four-ring PAHs were closest to theoretical equilibrium conditions among compounds with various aromatic rings. Finally, the potential PAH sources were estimated based on principal factor analysis with multiple linear regressions. Ground volatilization dominated the PAH pollutions at both sites, while vehicles and coal consumption were the other main emission sources, which totally contributed 32.0% (suburban) to 49.2% (urban) of PAH mass in Shanghai atmosphere. The effects of wood and biomass burning were also detected, but their contributions to PAHs were negligible.
英文摘要: Shanghai is the largest industrial and commercial city in China, and its air quality has been concerned for several years. However, scarce study had been made on the seasonal levels of atmospheric polycyclic aromatic hydrocarbons (PAHs), together with their gas-particle partitioning and potential emission sources. Based on an intensive sampling campaign at urban and suburban areas in Shanghai during four seasons of 2005-2006, this study presented the measurement of PAH concentrations in both particulate and gaseous phases, as well as seasonal and spatial variability. The results showed that the annual PAH levels (gas + particle) were 167 +/- 109 ng m(-3) at the urban site and 216 +/- 86.5 ngm(-3) at the suburban site. Gaseous PAHs (>70%) dominated the total PAH mass at both sites, while particulate PAHs contributed more than 90% of the toxic power according to benzo(a) pyreneequivalent carcinogenic parameter. Different seasonal trend of PAH concentrations was observed between the two sites, and it may be explained by complicated factors such as sampling heights, local/regional emission sources, and climatic conditions. The gas-particle partitioning of PAHs in all samples was calculated, and strong linear correlations between log K(p) and log P(L)(o) were observed, with shallower slopes (m(r)) at the suburban site than the urban one and in warm season than the cold months, indicating the different equilibrium conditions of PAHs in spatial and seasonal scales in Shanghai. The slope (m(r) = -0.96) and correlation coefficient (R(2) = 0.81) for four-ring PAHs were closest to theoretical equilibrium conditions among compounds with various aromatic rings. Finally, the potential PAH sources were estimated based on principal factor analysis with multiple linear regressions. Ground volatilization dominated the PAH pollutions at both sites, while vehicles and coal consumption were the other main emission sources, which totally contributed 32.0% (suburban) to 49.2% (urban) of PAH mass in Shanghai atmosphere. The effects of wood and biomass burning were also detected, but their contributions to PAHs were negligible.
研究领域[WOS]: Environmental Sciences & Ecology
关键词[WOS]: GAS-PARTICLE CONCENTRATION ; ORGANIC-COMPOUNDS ; DRY DEPOSITION ; SOURCE APPORTIONMENT ; URBAN ATMOSPHERE ; TEMPERATURE-DEPENDENCE ; AMBIENT-TEMPERATURE ; PARTICULATE MATTER ; COASTAL ATMOSPHERE ; ELEMENTAL CARBON
文章类型: Article
收录类别: SCI
语种: 英语
WOS记录号: WOS:000284959400017
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/4906
Appears in Collections:污染过程与控制实验室_期刊论文

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作者单位: 1.Shanghai Univ, Sch Environm & Chem Engn, Inst Environm Pollut & Hlth, Shanghai 200444, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China

Recommended Citation:
Chen, Yingjun,Feng, Yanli,Xiong, Shengchun,et al. Polycyclic aromatic hydrocarbons in the atmosphere of Shanghai, China[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2011,172(1-4):235-247.
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