|
| 典型矿业城市大气颗粒物水溶性离子分布特征 |
| Distribution Characteristics of Water soluble Ions in Aerosol Particles in A Typical Mining City |
| |
| DOI： |
| 中文关键词: 水溶性离子 PM2.5 PM2.5～10 粒径分布 污染源 淮南市 |
| 英文关键词: Water soluble ions PM2.5 PM2.5～10 Particle size distribution Pollution source Huainan |
| 基金项目:国家自然科学基金资助项目（41373108，41702176）；淮北矿业集团有限责任公司科技基金资助项目（HK-2018-1） |
|
| 摘要点击次数: 605 |
| 全文下载次数: 29 |
| 中文摘要: |
| 利用2014年7月和2015年1月在淮南市不同功能区采集的大气颗粒物样品，分析其水溶性离子时空和粒径分布特征。结果表明：夏季和冬季粗、细粒子中总水溶性离子质量浓度均值分别为（13.45±4.53）μg/m3、（27.81±17.65）μg/m3和（12.87±8.37）μg/m3、（85.08±35.41）μg/m3。淮南市大气颗粒物中主要的水溶性离子为Ca2+、NO-3和SO2-4。冬季各功能区PM2.5中总水溶性离子质量浓度普遍高于夏季。大气颗粒物中水溶性离子主要来源于土壤源、工业污染及二次转化，冬季二次污染源主要以流动源污染为主，而夏季流动源和固定源污染贡献接近。 |
| 英文摘要: |
| In this paper， the atmospheric particulate samples were collected from different functional areas in Huainan in July 2014 and January 2015 for analyzing the spatial and temporal distribution characteristics of water soluble ions and particle size. The results showed that the average mass concentrations of water soluble ions in PM2.5～10 and PM2.5 were (13.45±4.53)μg/m3 and (27.81±17.65)μg/m3 in summer， (12.87±8.37) μg/m3 and (85.08±35.41)μg/m3 in winter， respectively. The main water soluble ions in atmospheric particulates were Ca2+、NO-3 and SO2-4. The mass concentration of total water soluble ions in PM2.5 in each functional area in winter was higher than that in summer. Soils， industrial emissions and secondary transformation were the main sources of water soluble ions in atmospheric particulates. Mobile source was the main secondary pollution source in winter. Mobile source and stationary source had similar contribution in summer. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
