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当前位置: 首页 > 文章 > 新乡市冬季大气颗粒物水溶性离子的粒径分布及来源初探 河南科技学院学报(自然科学版) 2017 (4) 73-78
Position: Home > Articles > Primary study of source and size distribution of water-soluble ions in atmospheric particulates in winter in Xinxiang City Journal of Henan Institute of Science and Technology(Natural Science Edition) 2017 (4) 73-78

新乡市冬季大气颗粒物水溶性离子的粒径分布及来源初探

作  者：
曹胜男;高霞;崔俊鹏;田歌;李慧君;郭里可;李永芳;杨中智
单  位：
新乡医学院公共卫生学院;河南科技学院化学化工学院
关键词：
新乡市;大气颗粒物;水溶性离子;粒径分布
摘  要：
为探索新乡市冬季大气颗粒物水溶性离子的粒径分布,用Anderson八级采样器于新乡医学院进行了为期20 d的采样.用差值法分析了8个粒径段大气颗粒物的质量浓度,用离子色谱对Cl~-、F~-、SO_4~(2-)、NO_3~-、K~+、Na~+、Ca~(2+)、Mg~(2+)、NH_4~+9种离子进行了分析.结果表明:(1)新乡市大气颗粒物的质量浓度主要在5.8~10.0μm和0.43~2.10μm处呈双峰分布,且细颗粒物的质量浓度高于粗颗粒物;(2)颗粒物中各离子的浓度由高到低依次为NO_3~、SO_4~(2-)、NH_4~+、Ca~(2+)、Cl~-、K~+、F~-、Na~+、Mg~(2+);(3)PM9.0-10.0中Na~+、K~+和Mg~(2+)主要来自土壤扬尘,粗颗粒物中的Ca~(2+)和Mg~(2+)主要来自建筑尘,燃烧源是新乡市颗粒物水溶性离子的共同来源,NO_3~-/SO_4~(2-)指示新乡市二次生成颗粒物以汽车尾气污染为主.
译  名：
Primary study of source and size distribution of water-soluble ions in atmospheric particulates in winter in Xinxiang City
作  者：
CAO Shengnan;GAO Xia;CUI Junpeng;TIAN Ge;LI Huijun;GUO Like;LI Yongfang;YANG Zhongzhi;School of Public Health,Xinxiang Medical University;School of Chemistry and Chemical Engineering,Henan Institute of Science and Technology;
关键词：
Xinxiang City;;particulate matters;;water-soluble ions;;size distribution
摘  要：
To explore the size distribution of water-soluble ions(Cl~-,F~-,SO_4~(2-),NO_3~-,K~+,Na~+,Ca~(2+),Mg~(2+),NH_4~+)in sizesegregated PM,the PM was collected by an Anderson sampler in Xinxiang Medical University for 20 days.Mass concentration of size-segregated PM was calculated by gravimetrically.Water-soluble ions were analyzed by ion chromatography.The results showed:(1)The size distribution peaks of PM were 5.8~10.0 μm and 0.43~2.10 μm and mass concentration of fine PM were far more than coarse PM;(2) The concentration order of ions was NO_3~->SO_4~(2-)>NH_4~+>Ca~(2+)>Cl~->K~+>F~->Na~+>Mg~(2+);(3)Na~+,K~+and Mg~(2+)in PM9.0-10.0 came from road dust,Ca~(2+)and Mg~(2+)in coarse PM came from construction dust.The common source of water-soluble ions was biomass combustion and the NO_3~-/SO_4~(2-)mass ratio indicated that secondary aerosol particles mainly came from mobile sources.

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