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Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China
文献类型：期刊论文
| 作者 | Cao, JJ; Lee, SC; Ho, KF; Zou, SC; Fung, K; Li, Y; Watson, JG; Chow, JC |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2004-09 |
| 卷号 | 38期号:27页码:4447-4456 |
| 关键词 | organic carbon elemental carbon urban aerosol Pearl River Delta Region |
| DOI | 10.1016/j.atmosenv.2004.05.016 |
| 文献子类 | Article |
| 英文摘要 | The concentrations of organic carbon (OC) and elemental carbon (EC) in atmospheric particles were investigated at eight sites in four cities (Hong Kong, Guangzhou, Shenzhen and Zhuhai) of the Pearl River Delta Region (PRDR), China, during winter and summer 2002. The comparison of summer and winter results was made in order to investigate spatial and seasonal variations. PM2.5 and PM10 samples were collected on pre-fired quartz filters with mini-volume samplers and analyzed by the thermal optical reflectance (TOR) method following the Interagency Monitoring of PROtected Visual Environments (IMPROVE) protocol. During summer, the average OC and EC concentrations in PM2.5 were 9.2 and 4.1 mug m(-3), while those in PM10 were 12.3 and 5.2 mug m(-3). Carbonaceous aerosol accounted for 38.0% of the PM2.5 and 32.9% of the PM10. The daily average OC, EC, PM2.5 and PM10 concentrations in PRDR were higher in winter than in summer. The average OC/EC ratio was 2.5 for PM2.5 and PM10, suggesting the presence of secondary organic aerosols. The estimated secondary organic carbons in PM2.5 and PM10 were 4.1 and 5.6 mug m(-3), respectively. The OC and EC were found to be correlated in winter (correlation coefficient r = 0.82) and summer (r = 0.64), which implied that motor vehicle sources contributed to the ambient carbonaceous particles. The distribution of eight carbon fractions in OC and EC at eight sites was first reported in ambient samples in Asia, which also indicated that motor vehicle exhaust was the dominant contributor to carbonaceous particles. (C) 2004 Elsevier Ltd. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS关键词 | DESCRIPTIVE ANALYSIS ; SOURCE PROFILES ; AEROSOL ; PM2.5 ; PARTICLES ; VISIBILITY ; INDUSTRIAL ; IMPROVE ; SCIENCE ; PM(2.5) |
| WOS研究方向 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000223121000004 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.ieecas.cn/handle/361006/11836]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Cao, JJ,Lee, SC,Ho, KF,et al. Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China[J]. ATMOSPHERIC ENVIRONMENT,2004,38(27):4447-4456. |
| APA | Cao, JJ.,Lee, SC.,Ho, KF.,Zou, SC.,Fung, K.,...&Chow, JC.(2004).Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China.ATMOSPHERIC ENVIRONMENT,38(27),4447-4456. |
| MLA | Cao, JJ,et al."Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China".ATMOSPHERIC ENVIRONMENT 38.27(2004):4447-4456. |
入库方式： OAI收割
来源：地球环境研究所
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