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中文摘要：
为了解南京城区大气细颗粒物中水溶性组分的污染特征,在国控点草场门进行了连续一年的PM2.5采样与分析。6种离子日均浓度为5.29～67.6μg/m3,其中SO24-、NH4＋、NO3-是PM2.5的主要组成成分,6种离子约占PM2.5总质量的31%,SO24-、NO3-和NH4＋相关性较好,NH4＋是PM2.5中硫酸盐和硝酸盐中居于主导地位的离子。
英文摘要：
To find out features of water-soluble components pollution of atmospheric fine particles in Nanjing city area,we took one year for sampling and analyzing PM2.5.The range of 6 ion,which mainly are SO2-4,NH＋4 and NO-3,daily average is between 5.29 μg/m3 and 67.6 μg/m3.They take 31% of the total mass of PM2.5.The correlation of SO2-4,NO-3 and NH＋4 is good while NH＋4 is the dominating ion in the sulfate and nitrate in PM2.5.
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