| SEASONAL AND DIURNAL VARIATIONS OF PM1.0, PM2.5 AND PM10 IN THE ROADSIDE ENVIRONMENT OF HONG KONG |
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| 作者姓名： | Y. Cheng K.F. Ho S.C. Lee S.W. Law |
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| 作者单位： | Research Center of Urban Environmental Technology and Management, Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hung Horn, Kowloon, Hong Kong, China |
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| 基金项目： | Acknowledgements This project is supported by the Research Grants Council of Hong Kong （PolyU5145/03E）, |
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| 摘 要： | PM1.0 （fine particles, with diameter 〈 1 pm）, PM2.5 （fine particles, with diameter 〈 2.5μm） and PM10 （coarse particles, with diameter 〈 10 μm） were measured at 24-hour intervals near a high-traffic road in Hong Kong, from October 2004 to September 2005. Mass concentrations were determined for the three particle fractions, averaging for PM1.0, PM2.5 and PM10, respectively, 44.5±18.4, 55.4±25.5 and 81.3±37.7μg·m^-3, PM2.5 was 3.7 times the U.S. EPA＇s annual NAAQS of 15 μg·m^-3,. Overall, PM1.0 accounted for 44 to 69% （average 57%） of PM10, while PM2.5 accounted for 58 to 82% （average 71%） in this study. The particulate masses showed obvious seasonal patterns with high concentrations in cold seasons and low in warm seasons, especially high concentrations of PM2.5-10 during the cold seasons. Diurnal variations of mass concentrations of PM2.5 were determined during July, showing two major peaks in the morning and afternoon rush hours.
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| 关 键 词： | 香港 城区颗粒污染 路边环境 季变化 日变化 PM1.0 PM2.5 PM10 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-152006-10-06 |
SEASONAL AND DIURNAL VARIATIONS OF PM1.0, PM2.5 AND PM10 IN THE ROADSIDE ENVIRONMENT OF HONG KONG |
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| Y. Cheng K.F. Ho S.C. Lee S.W. Law.SEASONAL AND DIURNAL VARIATIONS OF PM1.0, PM2.5 AND PM10 IN THE ROADSIDE ENVIRONMENT OF HONG KONG[J].China Particuology,2006,4(6):312-315. |
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| Authors: | Y Cheng KF Ho SC Lee SW Law |
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| Abstract: | |
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| Keywords: | PM1 0 PM2 5 PM10 seasonal variations roadside environment Hong Kong |
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