| 上海市郊大气含碳颗粒物污染特征 |
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| 引用本文： | 曾友石,王广华,姚剑,李玉兰,黄豫,袁宁,刘邃庆,钱渊,吴胜伟,刘卫.上海市郊大气含碳颗粒物污染特征[J].环境科学学报,2013,33(1):189-200. |
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| 作者姓名： | 曾友石 王广华 姚剑 李玉兰 黄豫 袁宁 刘邃庆 钱渊 吴胜伟 刘卫 |
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| 作者单位： | 1. 中国科学院上海应用物理研究所-中国科学院核分析与核能技术重点实验室,上海,201800
2. 南华大学核科学技术学院,衡阳,421001 |
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| 基金项目： | 上海市科委基础研究重点项目(No.10JC1417200) |
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| 摘 要： | 利用STAPLEX六级采样器(＜0.49,0.49 ～0.95,0.95 ～1.50,1.50 ～3.00,3.00～7.20,＞7.20 μm)结合美国DRI碳分析仪分析了上海市嘉定区2008年4月至2010年10月大气颗粒物中EC和OC的含量和粒径分布,用EC示踪法估算POC和SOC的含量及粒径分布,并结合颗粒物中水溶性钾定量分析了上海市嘉定区大气颗粒物中EC和OC来自生物质燃烧排放的分担率.结果显示,上海市嘉定区大气颗粒物中EC与OC的含量分别为(3.54±1.46) μg·m-3和(19.35±9.38) μg·m-3,占颗粒物质量的2.8％±1.1％和14.8％±4.0％.嘉定区PM3.0中的OC与北京、杭州和武汉等城市的夏季以及珠江三角洲和上海市市区PM2.5中的OC相当,而EC含量偏小,反映了嘉定区EC受机动车尾气排放影响小.上海市嘉定区大气颗粒物中EC、OC、POC和SOC均呈双模态分布,其中EC、POC的分布峰位于＜0.49μm和＞3.00 μm的粒径段,OC的分布峰位于＜0.95.Μm和＞3.00μm的粒径段,SOC的分布峰位于0.49～0.95.Μm和3.0～7.2 μm的粒径段.各粒径段OC中SOC的比重分别为:36.64％±20.66％、74.92％±22.74％、54.80％±23.52％、56.30％±23.00％、66.89％±23.37％和47.22％±23.65％,说明嘉定区SOC的污染严重.基于OC、EC与K+的线性回归分析,大气颗粒物中生物质燃烧排放的OC和EC分担率分别为40％和32％,且各粒径段的分担率也有差别,最大的OC和EC分担率为76％和50％,对应于0.49～0.95μm粒径段.
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| 关 键 词： | 有机碳 元素碳 二次有机碳 粒径分布 |
| 收稿时间： | 2012/3/16 0:00:00 |
| 修稿时间： | 2012/5/17 0:00:00 |
Characteristics of carbonaceous particulate matter in suburban Shanghai atmosphere |
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| ZENG Youshi,WANG Guanghu,YAO Jian,LI Yulan,HUANG Yu,YUAN Ning,LIU Suiqing,QIAN Yuan,WU Shengwei and LIU Wei.Characteristics of carbonaceous particulate matter in suburban Shanghai atmosphere[J].Acta Scientiae Circumstantiae,2013,33(1):189-200. |
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| Authors: | ZENG Youshi WANG Guanghu YAO Jian LI Yulan HUANG Yu YUAN Ning LIU Suiqing QIAN Yuan WU Shengwei and LIU Wei |
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| Institution: | Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;School of Nuclear Science and Technology, University of South China, Hengyang 421001;School of Nuclear Science and Technology, University of South China, Hengyang 421001;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;Key Laboratory of Nuclear Analysis and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 |
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| Abstract: | |
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| Keywords: | organic carbon elemental carbon secondary organic carbon particle size distribution |
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