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浙江大学学报（理学版）
浙江大学学报（理学版）  2017, Vol. 44 Issue (1): 112-120    DOI: 10.3785/j.issn.1008-9497.2017.01.016
环境科学     
温州市PM2.5中水溶性离子污染特征及来源分析
葛琳琳1, 郑元铸2, 涂圣锋2, 朱京科3, 王俏丽4, 王向前3, 李素静3, 李伟1,3
1. 浙江大学 环境工程研究所, 浙江 杭州 310058;
2. 温州市环境监测中心站 浙江 温州 325003;
3. 浙江大学 生物质 化工教育部重点实验室 工业生态与环境研究所, 浙江 杭州 310027;
4. 浙江大学 热能工程研究所, 浙江 杭州 310027
Characteristics and sources apportionment of water-soluble ions in PM2.5 of Wenzhou, Zhejiang Province
GE Linlin1, ZHENG Yuanzhu2, TU Shengfeng2, ZHU Jingke3, WANG Qiaoli4, WANG Xiangqian3, LI Sujing3, LI Wei1,3
1. Institute of Environmental Engineering, Zhejiang University, Hangzhou 310058, China;
2. Wenzhou Environmental Monitoring Center, Wenzhou 325003, China;
3. Biomass Chemical Industry Ministry of Education Key Laboratory, Institute of Industrial Ecology and Environment, Zhejiang University, Hangzhou 310027, China;
4. Institute of Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
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摘要： 2015年1~12月在温州市区采集448个PM2.5样品，采用离子色谱法分析PM2.5中9种水溶性离子（SO42-、NO3-、NH4+、Cl-、Na+、K+、Ca2+、Mg2+和F-）的浓度，研究其污染特征、化学组分和来源.采样期间9种水溶性离子总浓度为39.97 μg·m-3，SO42-、NO3-和NH4+占所测水溶性离子总量的（40.19±10.04）%.离子总浓度的季节变化特征为冬季 > 春季 > 秋季 > 夏季，从空间分布上看，多数季节市站采样点PM2.5中离子总浓度低于南浦、龙湾和瓯海采样点.相关性分析结果显示，PM2.5值与NH4+、Ca2+、Na+、K+、Cl-、NO3-、SO42-浓度显著相关，PM2.5中SO42-和NH4+的主要结合方式为（NH4）2SO4.硫氧化速率（SOR）和氮氧化速率（NOR）的年均值分别为0.44±0.09和0.13±0.04，表明温州市PM2.5中SO42-和NO3-主要由二次转化形成.主成分分析结果表明，温州市PM2.5中水溶性离子主要来源于燃煤（火力发电和工业燃煤）、生物质燃烧、机动车尾气以及道路和建筑扬尘.
关键词： 温州;  PM2.5;  水溶性离子;  污染特征;  源解析    
Abstract: We collected 448 samples of PM2.5 at urban area of Wenzhou from January to December, 2015. Water-soluble ionic constituents(SO42-, NO3-, NH4+, Cl-, Na+, K+, Ca2+, Mg2+ and F-)associated to PM2.5 were detected by Ion Chromatogram (IC), chemical composition, variation characteristics, as well as the source apportionment were analyzed. The average mass concentration of the 9 ions was found to be 39.97 μg·m-3. Secondary inorganic species SO42-、NO3- and NH4+were the major components of water-soluble ions in PM2.5, with a contribution of (40.19±10.04)%. The order of total ions concentration was winter > spring > autumn > summer, showing obvious seasonal variations, and from the space, the concentrations of PM2.5-bound water-soluble ions were lower in Shizhan in most of the seasons. The results of correlation analysis showed that PM2.5 and NH4+、Ca2+、Na+、K+、Cl-、NO3-、SO42- had a significant negative correlation, and most of SO42- and NH4+ existed as (NH4)2SO4 in Wenzhou city. In addition, the sulfate oxidizing rate (SOR) and nitrate oxidizing rate (NOR) were (0.44±0.09) and (0.13±0.04), respectively. It indicated that SO42- and NO3- in PM2.5 were resulted by the secondary transformation. Principal component analysis (PCA) results suggested that water-soluble inorganic ions in PM2.5 mainly came from coal combustion (thermal power generation and coal-fired industry), biomass combustion, vehicle exhaust emission, road and construction dust.
Key words: Wenzhou    PM2.5    water-soluble ions    pollution characteristics    source apportionment
收稿日期: 2016-03-14 出版日期: 2017-01-22
CLC:  X51  
通讯作者: 李素静,ORCID:http://orcid.org/0000-0002-7757-3881,E-mail:sujing-li@zju.edu.cn     E-mail: sujing-li@zju.edu.cn
作者简介: 葛琳琳(1991-),ORCID:http//orcid.org/0000-0002-8908-4292,女,硕士研究生,主要从事PM2.5源解析研究,E-mail:gll920@zju.edu.cn.
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引用本文:

葛琳琳, 郑元铸, 涂圣锋, 朱京科, 王俏丽, 王向前, 李素静, 李伟. 温州市PM2.5中水溶性离子污染特征及来源分析[J]. 浙江大学学报（理学版）, 2017, 44(1): 112-120.

GE Linlin, ZHENG Yuanzhu, TU Shengfeng, ZHU Jingke, WANG Qiaoli, WANG Xiangqian, LI Sujing, LI Wei. Characteristics and sources apportionment of water-soluble ions in PM2.5 of Wenzhou, Zhejiang Province. Journal of ZheJIang University(Science Edition), 2017, 44(1): 112-120.

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https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2017.01.016    或    https://www.zjujournals.com/sci/CN/Y2017/V44/I1/112

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