摘要
目的：了解北京市采暖期大气颗粒物PM2.5与PM10的污染特征。方法：在北京市城区设置采样点,采集了2006年3月3～5日、6～8日、8～10日和12～14日PM2.5与PM10,对其中的8种水溶性离子、17种“酸提”元素、12种“水提”元素、17种多环芳烃及有机碳、元素碳的含量进行了分析。结果：8种水溶性离子总浓度及含碳组分（有机碳＋元素碳）的质量浓度分别占PM2.5和PM10质量浓度的29.8%、17.5%和21.0%、14.6%;17种＂酸提＂元素总浓度分别占PM2.5和PM10质量浓度的4.8%和5.8%;已测定的17种多环芳烃中以4环和5环为主,二者浓度之和分别占PM2.5与PM10中多环芳烃总浓度的84.9%和86.3%。结论：水溶性离子、含碳组分为采暖期PM2.5和PM10中的主要成分。
Objective： To investigate the pollution characteristics of PM2.5 and PM10 in heating period in the ambient air of Beijing.Methods：PM2.5 and PM10 samples were collected from March 3 to 5,March 6 to 8,March 10 to 12,March 12 to 14 of 2006 in Beijing,8 kinds of water-soluble ions,17 kinds of ＂acid extraction＂ elements,12 kinds of ＂water extraction＂ elements,17 kinds of polycyclic aromatic hydrocarbons（PAHs）,organic carbon and element carbon were analyzed.Results：The results showed that in heating period,the total concentration of those 8 kinds of water-soluble ions and the total concentration of organic carbon and element carbon accounted for 29.8%,17.5% and 21.0%,14.6% of mass concentration of PM2.5 and PM10 respectively.The total concentration of 17 kinds of ＂acid extraction＂ elements accounted for 4.8% and 5.8% of mass concentration of PM2.5 and PM10 respectively.4 to 5 rings PAHs were the main components of 17 kinds of PAHs,accounted for 84.9% and 86.3% of the total concentration of PAHs in PM2.5 and PM10 respectively.Conclusion：Water-soluble ions and the total carbon are the main components in PM2.5 and PM10 in heating period in Beijing.
出处
《中国卫生检验杂志》
CAS
2008年第8期1505-1508,共4页
Chinese Journal of Health Laboratory Technology
基金
国家自然科学基金资助项目(30571534)
国家科学技术部十一五支撑计划项目(2006BAI19B06)
