环境工程学报2017，Vol.11Issue(4)：2402-2406,5.DOI:10.12030/j.cjee.201601094
西安市全年中PM2.5水溶性无机离子变化特征
Annual variation of water-soluble inorganic ions in PM2.5 in Xi'an
刘立忠 1薛梁磊 1韩婧 2崔琪1
作者信息
- 1. 西安建筑科技大学,环境与市政工程学院,西安710055
- 2. 西安市环境监测站,西安710054
- 折叠
摘要
Abstract
Real-time-monitoring with ICS-1100 ion chromatography was used to analyze the distribution and variation of water-soluble inorganic ions in PM2.5.A sampling period from June 2014 to June 2015 in Xi'an China was used.The results indicated that NO3-,NH4+,SO42-,and Cl-were dominant components in PM2.5 and accounted for 89.49％ of the total mass concentration.Since trends over the same period of time in the month are clear,the peaks in November and December were 30.26,15.19,11.43,and 16.60 μg · m-3 respectively and the month's mean concentration decreased over the same period.Na +,Ca2 +,Mg2 +,and K + display different changes in trends than main ions.The mean magnitude follows as NO3-＞ SO42-,which indicates that the mobile source has become a major contributor for water-soluble inorganic ions in PM2.5.At 10 and 20 o'clock,NO3-has two peaks in the upper part of SO42-.The correlation analysis demonstrates that there is significant correlation between NO3-and NO2-,and between SO42-and Cl-,of 0.05 and 0.01,respectively.关键词
西安市/PM2.5/水溶性离子/特征Key words
Xi'an/PM2.5/water-soluble ions/feature分类
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刘立忠,薛梁磊,韩婧,崔琪..西安市全年中PM2.5水溶性无机离子变化特征[J].环境工程学报,2017,11(4):2402-2406,5.
