摘要
采集了镇江谏壁桥点位2015年9月底至11月初的PM2.5样品,对PM2.5来源进行解析,结果显示,镇江市谏壁桥点位监测期间,受到了多类重点污染源的共同影响。优良天气占比为69.2%,但也捕捉到多次重度污染天气,属于较为典型的秋季污染特征;颗粒物主要成分为元素碳颗粒(31.8%),其次是有机碳颗粒(20.9%);首要污染源是机动车尾气(28.2%),第二是燃煤(23.9%),第三为扬尘(11.5%)。
An online and real time analysis on the source of atmospheric PM2 .5 was carried out using samples collected in monitoring point of Jianbi bridge, Zhenjiang City from the end of September to the beginning of November 2015 , the results show that during monitoring period, a variety of key pol-lution sources contributed simultaneously to the impacts produced on the site. Although good air quality accounted for 69.2% of total during that period, heavily polluted air quality, typically seen in autumn, were captured for many times during monitoring period. The main components of PM2. 5 includes carbon particles（ 31. 8% ） and the organic carbon particles（20. 9% ） . Exhausted gas from vehicles, coal combustion and dust rank in the first three positions among the major pollution sources, with the percentage of 28. 2% , 23. 9% , and 11.5% respectively.
出处
《环保科技》
2017年第3期28-31,共4页
Environmental Protection and Technology
基金
江苏省环境监测基金资助项目(1312)
关键词
PM2.5
源解析
机动车尾气
PM2. 5
source analysis
exhausted gas from vehicle
