| 广州市冬季城区街道行人VOCs,PM10和CO暴露水平 |
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| 引用本文： | 赵利容,王新明,封少龙,盛国英,傅家谟.广州市冬季城区街道行人VOCs,PM10和CO暴露水平[J].环境科学研究,2003,16(5):18-20. |
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| 作者姓名： | 赵利容 王新明 封少龙 盛国英 傅家谟 |
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| 作者单位： | 中国科学院,广州地球化学研究所,有机地球化学国家重点实验室,广东,广州,510640 |
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| 基金项目： | 广东省环保局项目(2000-12);广东省自然科学基金团队项目资助 |
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| 摘 要： | 在冬季以模拟行人路边行走的方式对广州市17条代表性城区街道进行了挥发有机物(VOCs)采样和随后的实验室分析,同时用便携式测定仪对PM10和CO暴露水平进行了直接测定.结果表明,虽然同期公布的空气污染指数不高,但行人在路边行走时一些毒害性挥发有机物(如苯)和PM10暴露水平较高,苯和PM10的超标率分别达到71%和77%.街道的分类比较表明,阶段性步行街的苯和甲苯平均含量最高,其他被研究化合物(除四氯乙烯外)则是按步行街、阶段性步行街和非步行街依次递增;新城区和老城区街道的差异比较明显.街道空气中VOCs的主要来源可能包括机动车尾气和溶剂挥发,但来源分配方面有待进一步深入分析.
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| 关 键 词： | 发有机物 可吸入颗粒物 一氧化碳 空气污染 广州 |
| 文章编号： | 1001-6929(2003)05-0018-03 |
| 收稿时间： | 2002/11/25 0:00:00 |
Winter-Time Exposure of Volatile Organic Compounds,PM10 and CO While Walking along Urban Guangzhou Streets |
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| ZHAO Li-rong,WANG Xin-ming,FENG Shao-long,SHENG Guo-ying and FU Jia-mo.Winter-Time Exposure of Volatile Organic Compounds,PM10 and CO While Walking along Urban Guangzhou Streets[J].Research of Environmental Sciences,2003,16(5):18-20. |
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| Authors: | ZHAO Li-rong WANG Xin-ming FENG Shao-long SHENG Guo-ying and FU Jia-mo |
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| Affiliation: | State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China |
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| Abstract: | While walking along 17 typical streets in Guangzhou in the winter,the authors collected VOCs samples and got them analyzed hereafter in the lab;PM\-\{10\} and CO were also measured directly during the sampling periods by portable analyzers.Although air quality index in the sampling periods is not so high,the results indicated that pedestrians’ exposure levels were relatively high for some toxic VOCs(like benzene) and PM\-\{10\} 71% and 77% of the detected levels exceeded limits in relevant air quality standards for benzene and PM\-\{10\},respectively.A comparison of different classifications of streets showed that the average levels of benzene and methylbenzene were highest for part-time walk-only streets,while levels of other compounds under study (except tetrachloroethylene) were with increasing trend from walk-only streets to part-time walk-only streets and to traffic streets.The difference of VOCs levels between old and new urban streets,however,were much more significant.Major sources of VOCs found in the roadsides might include traffic emission and solvent evaporation,but further investigation is needed for a sound source apportioning. |
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| Keywords: | volatile organic compounds(VOCs) respirable particulate matter CO air pollution Guangzhou |
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