Polycyclic aromatic hydrocarbons in the atmosphere of Shanghai, China
文献类型：期刊论文
| 作者 | Chen, Yingjun2; Feng, Yanli1; Xiong, Shengchun1; Liu, Dongyan2 ; Wang, Gang2; Sheng, Guoying3; Fu, Jiamo3
|
| 刊名 | ENVIRONMENTAL MONITORING AND ASSESSMENT
 |
| 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 |
| ISSN号 | 0167-6369 |
| 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 |
| 文献子类 | Article |
| 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.; 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. |
| 学科主题 | Environmental Sciences |
| WOS关键词 | GAS-PARTICLE CONCENTRATION ; ORGANIC-COMPOUNDS ; DRY DEPOSITION ; SOURCE APPORTIONMENT ; URBAN ATMOSPHERE ; TEMPERATURE-DEPENDENCE ; AMBIENT-TEMPERATURE ; PARTICULATE MATTER ; COASTAL ATMOSPHERE ; ELEMENTAL CARBON |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000284959400017 |
| 公开日期 | 2011-07-22 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/4906]  |
| 专题 | 烟台海岸带研究所_污染过程与控制实验室 烟台海岸带研究所_近岸生态与环境实验室 |
| 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 |
| 推荐引用方式 GB/T 7714 | 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. |
| APA | Chen, Yingjun.,Feng, Yanli.,Xiong, Shengchun.,Liu, Dongyan.,Wang, Gang.,...&Fu, Jiamo.(2011).Polycyclic aromatic hydrocarbons in the atmosphere of Shanghai, China.ENVIRONMENTAL MONITORING AND ASSESSMENT,172(1-4),235-247. |
| MLA | Chen, Yingjun,et al."Polycyclic aromatic hydrocarbons in the atmosphere of Shanghai, China".ENVIRONMENTAL MONITORING AND ASSESSMENT 172.1-4(2011):235-247. |
入库方式： OAI收割
来源：烟台海岸带研究所
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