摘要
使用在线离子色谱分析了苏州市区春节期间PM2.5中水溶性离子。结果表明:春节期间存在2个空气污染高峰时段(初一和初五),其中初一凌晨PM2.5达到最高峰,小时质量浓度为571μg/m3;烟花爆竹集中燃放时段,PM2.5中K+、Cl-、Mg2+质量浓度明显上升,初一凌晨与腊月三十凌晨相比,K+、Cl-、Mg2+质量浓度分别增加了117倍、80.7倍、18.0倍;相关性分析表明,PM2.5中K+、Mg2+、Na+、Ca2+在烟花爆竹燃放时段可能具有相同的来源。
The characteristics of the water-soluble ions in PM2.5 were analyzed by on-line ion chromatography during the Spring Festival （from Februal7 9 to 15, 2013） in Suzhou city. It indicated that there were two heavy air pollution periods during the Spring Festival. Peak value come in the early morning of the Lunar New Year＇s Day,with an hourly concentration of 571 μg/m3. During the timescales of concentrated setting off firecrackers and fireworks, the concentration of potassium, chloride, magnesium ion in PM2.5 were increased signifi- cantly. Compared with the early morning of Februal7 9, the concentration of potassium ion, chloride ion and magnesium ion in the early morning of the Lunar New year＇s Day increased 117 times, 80.7 times, and 18.0 times, respectively. According to correlation analysis, during the timescales of concentrated setting off firecrackers and fireworks, the potassium ion, magnesium ion, sodium ion, calcium ion in PM2.5 may have the similar emission source.
出处
《环境监测管理与技术》
2014年第2期26-29,62,共5页
The Administration and Technique of Environmental Monitoring
基金
苏州市科技支撑计划(社会发展)基金资助项目(SS201232)
关键词
水溶性离子
PM2
5
烟花爆竹
春节
苏州市
Water-soluble ions
PM2.5
Firecrackers
Spring Festival
Suzhou city
