| 武汉市大气PM2.5中水溶性离子污染特征及来源 |
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| 引用本文： | 程渊,吴建会,毕晓辉,杨佳美,刘保双,戴启立,李蒲,郁佳,冯银厂.武汉市大气PM2.5中水溶性离子污染特征及来源[J].环境科学学报,2019,39(1):189-196. |
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| 作者姓名： | 程渊 吴建会 毕晓辉 杨佳美 刘保双 戴启立 李蒲 郁佳 冯银厂 |
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| 作者单位： | 南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津300350;武汉市环境监测中心,武汉,430015 |
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| 基金项目： | 国家重点研发计划（No.2016YFC0208500）；中央高校基本科研业务费专项 |
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| 摘 要： | 于2016年8月—2017年4月采集了武汉市PM2.5样品,使用离子色谱法分析了PM2.5中的水溶性离子(F-、Cl-、SO2-4、NO-3、Na+、NH+4、K+、Mg2+、Ca2+),并研究其污染特征及来源.结果表明,武汉市PM2.5质量浓度变化范围为24.8～215.7μg·m-3,均值为(81.3±38.1)μg·m-3.9种水溶性离子的年均质量浓度占PM2.5质量浓度的29.3%,其中,SO2-4、NO-3、NH+4(三者合称SNA)为主要的水溶性离子,SNA占PM2.5质量浓度的23.3%～32.0%.硫氧化率(SOR)和氮氧化率(NOR)年均值分别为0.4、0.1,说明武汉市大气存在较强的SO2向SO2-4、NO2向NO-3转化的二次过程.观测期间,武汉市的细颗粒物整体呈弱碱性.Ca2+与Mg2+,以及NH+4与NO-3、SO2-4等均有显著相关性,NH+4、NO-3、SO2-4主要以(NH4)2SO4和NH4NO3的形式存在.武汉市全年NO-3/SO2-4比值为0.9,表明固定源贡献相对较大.主成分分析结果表明,武汉市大气PM2.5中水溶性离子主要来自于燃煤及机动车排放、工业生产、扬尘等.
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| 关 键 词： | 水溶性离子 PM2.5 污染特征 来源 武汉 |
| 收稿时间： | 2018/7/9 0:00:00 |
| 修稿时间： | 2018/8/12 0:00:00 |
Characteristics and source apportionment of water-soluble ions in ambient PM2.5 in Wuhan, China |
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| CHENG Yuan,WU Jianhui,BI Xiaohui,YANG Jiamei,LIU Baoshuang,DAI Qili,LI Pu,YU Jia and FENG Yinchang.Characteristics and source apportionment of water-soluble ions in ambient PM2.5 in Wuhan, China[J].Acta Scientiae Circumstantiae,2019,39(1):189-196. |
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| Authors: | CHENG Yuan WU Jianhui BI Xiaohui YANG Jiamei LIU Baoshuang DAI Qili LI Pu YU Jia and FENG Yinchang |
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| Institution: | State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350,Wuhan Environmental Monitoring Center Station, Wuhan 430015,Wuhan Environmental Monitoring Center Station, Wuhan 430015 and State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350 |
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| Abstract: | |
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| Keywords: | water-soluble ions PM2 5 characteristic source Wuhan |
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