宝钢股份大气环境PM_(2.5)的污染特征及源解析  

Pollution characteristics and source apportionment of ambient PM_(2.5) in Baoshan Iron & Steel Co.,Ltd.

作　　者：张锋 郑丽菡 王晓栋 

机构地区：[1]上海宝钢工业技术服务有限公司,上海201900

出　　处：《宝钢技术》2016年第2期60-64,共5页Baosteel Technology

摘　　要：2013年在宝钢股份4个环境受体点采集不同季节的PM2.5样品,同时采集颗粒物源类样品,分析其质量浓度及多种无机元素和水溶性离子等组分的含量,据此构建了受体和源化学成分谱,使用化学质量平衡模型对宝钢股份的PM2.5来源进行了解析。结果表明,2013年宝钢股份大气中PM10和PM2.5的年均浓度分别为106和81μg/m3,环境空气中PM2.5的质量浓度随时间变化,特征为春冬季明显高于夏秋季;PM2.5主要由飞灰、烟尘、矿物质等组成;电厂煤烟尘、机动车尾气尘、冶炼锻造尘和烧结尘是宝钢股份环境空气中PM2.5的主要来源,其分担率分别为28.57%、23.81%、19.05%、14.29%。Samples of PM2. 5were collected at four air quality monitoring sites in Baoshan Iron Steel Co. Ltd. in 2013 different seasons. Some pollutant sources of PM2. 5were sampled and analyzed simultaneously. Their mass concentration,inorganic elements and water solvent ions were analyzed to identify the sources of the PM2. 5. The sources of PM2. 5in Baoshan Iron Steel Co.,Ltd. were analyzed based on the chemical mass balance（ CMB） receptor model. The results showed,the average mass concentrations of PM2. 5and PM10 were 106 and 81 μg / m3,respectively,PM2. 5mass concentration varies with time,which is characterized by significant higher value in spring and winter than that in summer and autumn; PM2. 5was primarily consisted by flying ash,soots and mineral particles; coal combustion from power plant,vehicle exhaust,dust from smelting forging plants and dust from sintering plant were the important sources of PM2. 5,with contributions of28. 57%,23. 81%,19. 05% and 14. 29%,respectively.

关 键 词：PM2.5 污染特征 源解析 化学质量平衡受体模型 

分 类 号：X513[环境科学与工程—环境工程]