دورية أكاديمية
Local and regional anthropogenic influence on PM2.5 elements in Hong Kong
| العنوان: | Local and regional anthropogenic influence on PM2.5 elements in Hong Kong |
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| المؤلفون: | Hagler, G. S. W., Bergin, M. H., Salmon, L. G., Yu, J. Z., Wan, E. C. H., Zheng, M., Zeng, L. M., Kiang, C. S., Zhang, Y. H., Schauer, J. J. |
| المساهمون: | Hagler, GSW (reprint author), Georgia Inst Technol, Sch Civil & Environm Engn, 311 Ferst Dr, Atlanta, GA 30332 USA., Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA., Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA., CALTECH, EQL, Pasadena, CA 91125 USA., Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China., Peking Univ, Coll Environm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China., Univ Wisconsin, Civil & Environm Engn, Madison, WI 53706 USA., Georgia Inst Technol, Sch Civil & Environm Engn, 311 Ferst Dr, Atlanta, GA 30332 USA. |
| المصدر: | EI ; SCI |
| بيانات النشر: | 大气环境 |
| سنة النشر: | 2007 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | pearl river delta, elements, PM2.5, source areas, correlation, 4 CHINESE CITIES, AIR-POLLUTION, CHEMICAL-COMPOSITION, AEROSOLS, DISEASES, EXHAUST, METALS, CARBON, PM10 |
| الوصف: | Hong Kong's persistent unhealthy level of fine particulate matter is a current public health challenge, complicated by the city being located in the rapidly industrializing Pearl River Delta Region of China. While the sources of the region's fine particulate matter (PM2.5) are still not well understood, this study provides new source information through ground measurements and statistical analysis of 24 elements associated with particulate matter collected on filters. Field measurements took place over 4 months (October 2002, December 2002, March 2003, and June 2003) at seven sites throughout the Pearl River Delta, with three sites located in Hong Kong and four sites in the neighboring province, Guangdong. The 4-month average element concentrations show significant variation throughout the region, with higher levels of nearly every species seen among the northern Guangdong sites in comparison to Hong Kong. The high correlation (Pearson r > 0.8) and similar magnitudes of 11 species (Al, Si, S, K, Ca, Mn, Fe, Zn, Br, Rb, and Pb) at three contrasting sites in Hong Kong indicate that sources external to Hong Kong dominate the regional levels of these elements. Further correlative analysis compared Hong Kong against potential source areas in Guangdong Province (Shenzhen, Zhongshan, and Guangzhou). Moderate correlation of sulfur for all pairings of Hong Kong sites with three Guangdong sites in developed areas (average Pearson r of 0.52-0.94) supports the importance of long-distance transport impacting the region as a whole, although local sources also clearly impact observed concentrations. Varying correlative characteristics for zinc when Hong Kong sites are paired with Shenzhen (average r = 0.86), Guangzhou (average r = -0.65) and Zhongshan (average r = 0.45) points to a source area located south of Guangzhou and locally impacting Zhongshan. The concentration distribution and correlative characteristics of bromide point to sources located within the Pearl River Delta, but the specific location is yet ... |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 1352-2310 |
| العلاقة: | ATMOSPHERIC ENVIRONMENT.2007,41,(28),5994-6004.; 965686; http://hdl.handle.net/20.500.11897/249728Test; WOS:000249639600015 |
| DOI: | 10.1016/j.atmosenv.2007.03.012 |
| الإتاحة: | https://doi.org/20.500.11897/249728Test https://doi.org/10.1016/j.atmosenv.2007.03.012Test https://hdl.handle.net/20.500.11897/249728Test |
| رقم الانضمام: | edsbas.8B02B689 |
| قاعدة البيانات: | BASE |
| تدمد: | 13522310 |
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| DOI: | 10.1016/j.atmosenv.2007.03.012 |