中文摘要：

采用离子色谱法测定武汉市秋、冬季大气PM2.5中水溶性离子浓度,对其化学组成、质量浓度变化特征及源解析等方面进行了研究。结果表明,NO-3、SO2-4、NH＋4为武汉市秋、冬季大气PM2.5中主要的水溶性离子,相关性分析表明,燃烧源是秋、冬季大气PM2.5中水溶性离子的共同来源。成分分析表明,工业区的水溶性离子主要来源于燃烧源,交通区的水溶性离子主要来源于二次污染源,其中包括垃圾焚烧源,植物园的水溶性离子主要来源于二次污染源。

英文摘要：

The concentration of water-soluble ions in autumn and winter of Wuhan was detected by ion chromatogram（IC）,the chemical composition,variation characteristics as well as the source apportionment of these water-soluble ions were analyzed.The results showed that NO-3,SO2-4and NH＋4were the main water-soluble ions in Wuhan atmospheric PM2.5.Through correlation analysis,it was showed that the common source of water-soluble ions in autumn and winter of Wuhan atmospheric PM2.5 was the combustion source.By principal component analysis,it was found that water-soluble ions in industrial zone mainly came from combustion source,in traffic area,they mainly came from the secondary pollution,including the source of waste incineration,and in botanical garden,they mainly contributed by the secondary pollution.