| 南京春季北郊地区大气PM2.5中主要化学组分及碳同位素特征 |
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| 引用本文： | 周一鸣,韩珣,王瑾瑾,陈善莉,沈潇雨,章炎麟,朱彬,郭照冰.南京春季北郊地区大气PM2.5中主要化学组分及碳同位素特征[J].环境科学,2018,39(10):4439-4445. |
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| 作者姓名： | 周一鸣 韩珣 王瑾瑾 陈善莉 沈潇雨 章炎麟 朱彬 郭照冰 |
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| 作者单位： | 南京信息工程大学环境科学与工程学院;江苏省大气环境监测与污染控制高技术研究重点实验室;南京信息工程大学大气物理学院;耶鲁大学-南京信息工程大学大气环境研究中心 |
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| 基金项目： | 国家自然科学基金项目（41373023,91544229-02,41625006）;江苏省"333人才工程"培养项目;江苏省"青蓝工程"中青年学术带头人培养项目;江苏省大学生创新训练计划项目（201710300019） |
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| 摘 要： | PM_(2.5)是大气的重要污染物之一,其成分复杂,为研究PM_(2.5)的污染特征及来源,于2016年3月采集南京北郊地区大气中的PM_(2.5),利用Dinoex ICS-3000和ICS-2000型离子色谱和DRI Model 2001A热/光碳分析仪分别测定了PM_(2.5)中的阴阳离子和碳质组分,利用元素分析仪-同位素质谱仪测定大气PM_(2.5)中的总碳同位素(δ~(13)CTC)组成特征.结果表明,2016年3月期间南京北郊地区PM_(2.5)污染严重,平均浓度达(106.16±48.70)μg·m~(-3),且88%观测天中存在明显的二次有机污染,SOC平均浓度为(3.58±2.78)μg·m~(-3),且在晴天条件下高浓度的二次有机碳(SOC)与紫外线作用下的O_3具有较强的相关性.大气PM_(2.5)中δ~(13)CTC值范围是-26.56‰~-23.75‰,平均值为(-25.47‰±0.63‰),结合化学组分的三相聚类分析结果可知,大气PM_(2.5)主要来源于燃煤过程、机动车排放,此外还受地质源和生物质燃烧源的影响.
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| 关 键 词： | 大气PM2.5 有机碳(OC) 元素碳(EC) 碳同位素 来源 |
| 收稿时间： | 2017/11/6 0:00:00 |
| 修稿时间： | 2018/4/2 0:00:00 |
Chemical Constitution and Carbon Isotopic Compositions of PM2.5 in the Northern Suburb of Nanjing in Spring |
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| ZHOU Yi-ming,HAN Xun,WANG Jin-jin,CHEN Shan-li,SHEN Xiao-yu,ZHANG Yan-lin,ZHU Bin and GUO Zhao-bing.Chemical Constitution and Carbon Isotopic Compositions of PM2.5 in the Northern Suburb of Nanjing in Spring[J].Chinese Journal of Environmental Science,2018,39(10):4439-4445. |
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| Authors: | ZHOU Yi-ming HAN Xun WANG Jin-jin CHEN Shan-li SHEN Xiao-yu ZHANG Yan-lin ZHU Bin and GUO Zhao-bing |
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| Institution: | School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China,School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China,School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China,Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China;School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China,School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China and School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China |
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| Abstract: | |
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| Keywords: | atmospheric PM2 5 organic carbon (OC) elemental carbon (EC) carbon isotope source |
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