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| 上海市含碳大气颗粒物的粒径分布 | |
| 引用本文： | 袁宁,刘卫,赵修良,王广华,姚剑,曾友石,刘邃庆.上海市含碳大气颗粒物的粒径分布[J].环境科学,2013,34(5):1995-2002. |
| 作者姓名： | 袁宁 刘卫 赵修良 王广华 姚剑 曾友石 刘邃庆 |
| 作者单位： | 1. 南华大学核科学技术学院,衡阳421001;中国科学院上海应用物理研究所核分析重点实验室,上海201800 2. 中国科学院上海应用物理研究所核分析重点实验室,上海,201800 3. 南华大学核科学技术学院,衡阳,421001 |
| 基金项目： | 上海市科委基础研究重点项目(10JC1417200);国家自然科学基金青年科学基金项目(11005144) |
| 摘 要： | 使用STAPLEX大流量六级采样器(<0.49μm、0.49～0.95μm、0.95～1.5μm、1.5～3.0μm、3.0～7.2μm和>7.2μm),结合DRI Model 2001热光碳分析仪(TOR),分析了2010年5月～2011年5月期间上海市嘉定区(市郊)、徐汇区(市区)的大气颗粒物样品中有机碳(OC)和元素碳(EC)的粒径分布.结果表明,不同粒径的OC和EC质量浓度均呈双峰分布,较高峰出现于<0.49μm粒径段,次高峰则出现于>3.0μm的两个粒径段.嘉定区(JD)和徐汇区(XH)PM3.0中OC的质量浓度分别为16.35μg.m-3和11.85μg.m-3,EC质量浓度分别为2.22μg.m-3和1.91μg.m-3,市郊大气颗粒物中碳组分质量浓度高于市区,说明市郊碳污染更为严重.在<1.5μm的粒径段,嘉定区OC与EC的同源性较好,表明其中大部分OC来自于燃烧源.两地区不同粒径OC/EC值与不同排放源特征值的对比,可以说明徐汇区更多受到机动车尾气排放和道路扬尘的影响.通过EC示踪法计算二次有机碳(SOC)质量浓度可知:上海市SOC质量浓度较高,PM3.0中达到6.76μg.m-3,占OC的质量分数为69%,粒径分布呈双峰分布,峰值位于0.49～0.95μm和3.0～7.2μm粒径段. |
| 关 键 词： | 颗粒物 OC EC 粒径分布 上海 |
| 收稿时间： | 2012/8/17 0:00:00 |
| 修稿时间： | 2012/10/24 0:00:00 |
Size Distribution of Carbonaceous Particulate Matter in Atmosphere of Shanghai,China |
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| YUAN Ning,LIU Wei,ZHAO Xiu-liang,WANG Guang-hu,YAO Jian,ZENG You-shi and LIU Sui-qing.Size Distribution of Carbonaceous Particulate Matter in Atmosphere of Shanghai,China[J].Chinese Journal of Environmental Science,2013,34(5):1995-2002. | |
| Authors: | YUAN Ning LIU Wei ZHAO Xiu-liang WANG Guang-hu YAO Jian ZENG You-shi and LIU Sui-qing |
| Institution: | School of Nuclear Science and Technology, University of South China, Hengyang 421001,China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;School of Nuclear Science and Technology, University of South China, Hengyang 421001,China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
| Abstract: | |
| Keywords: | aerosol particle organic carbon element carbon size distribution Shanghai |
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