| 杭州主城区悬浮细颗粒PM_(2.5)浓度变化及其组分分析 |
| |
| 引用本文： | 洪盛茂,张天,姚晗,焦荔,何曦,孙鸿良,徐鸿,包贞,杨乐,何纪平,叶贤满.杭州主城区悬浮细颗粒PM_(2.5)浓度变化及其组分分析[J].中国粉体技术,2010,16(1):14-17,34. |
| |
| 作者姓名： | 洪盛茂 张天 姚晗 焦荔 何曦 孙鸿良 徐鸿 包贞 杨乐 何纪平 叶贤满 |
| |
| 作者单位： | 杭州市环境监测中心站,浙江杭州310007 |
| |
| 基金项目： | 杭州市科技局重大科技创新项目 |
| |
| 摘 要： | 利用杭州市区2006—2008年大气悬浮颗粒PM2.5和PM2.5-10的监测资料,研究它们的物化特征。结果表明:杭州主城区PM2.5和PM2.5-103年的平均浓度分别为0.073、0.037mg·m-3,ρ(PM2.5)/ρ(PM2.5-10)的比值为1.86。PM2.5浓度存在双峰型日变化,以9:00和18:00为峰值,日变化幅度较大,并呈现冬高、夏低的季节变化。PM2.5化学组分分析表明:PM2.5中含量最多的是有机碳,占24.4%,其次是SO42-,不同组分呈现不同的季节变化。
|
| 关 键 词： | 大气悬浮颗粒 二次粒子 季节变化 |
Variations in Mass Concentrations and Components in Urban Areas of Hangzhou, China |
| |
| Abstract: | Based on the monitoring datas of PM2.5 from 2006 to 2008 over Hangzhou urban,the physical and chemical characteristics were analyzed.The results showed that the average concentrations of PM2.5 and PM2.5-10 during three years were 0.073 mg·m-3 and 0.037 mg·m-3,respectively.ρ(PM2.5)/ρ(PM2.5-10) ratio was 1.86.Obvious diurnal variation of PM2.5 was observed,and showed a clear seasonal pattern with high concentration in winter and low values in summer.PM2.5 chemical components were analyzed,it was shown that the percent of organic carbon was most abundant,which was 24.4%,and SO42-was secondary.The seasonal variation of PM2.5 components were ddifference. |
| |
| Keywords: | particulate matter second particle diurnal variation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
