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| 一次连续在线观测分析天津市细颗粒物污染特征 |
| Characteristics AnalysisofAir Fine Particles Pollution by A Continuous On-lineM onitoringin Tianjin |
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| DOI： |
| 中文关键词: 空气污染 在线监测 可吸入颗粒物 超细颗粒物 气溶胶细粒子 天津 |
| 英文关键词: Airpollution On-linemonitoring PM 10 PM 1.0 PM 2. 5 Tianjin |
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| 中文摘要: |
| 根据2005年的5月17日-5月23日 GRIMM (1.109#) 谱分析仪在线观测结果考察天津市细颗粒物浓度和质量浓度特征。观测期间, 天津市颗粒物数浓度平均值为1124 cm - 3 , 粒径分布为0.25 m ~ 0.60 m,98.5% 粒子的粒径 <0.65m 。同期 PM 10 日 均 质量浓度值为 204 g/m 3 , (PM 2.5 ) 为104 g/m3 , (PM 1.0 ) 为 82.9 g/m 3 。 (PM 1.0 )/ (PM 2.5 ) 超过80%, 粒径 < 1 m |
| 英文摘要: |
| The massand numberconcentrationoffineparticlesofTianjinwasobservedbyaon-linemonitoring work with GRIMM (1.109#) during the period ofM ay 2005. The particles number concentration was1124 cm - 3 with their diam eters between 0. 25 m and 0. 60 m. The particles with diam eterslessthan 0.65 m accounted for98.5% intheatmosphere, whilethemassconcentrationsofPM 10 , PM 2.5 and PM 1. 0 were 204g/m 3 , 104g/m 3 and 82.9g/m 3 respectively. R esultshowedthatthepercentageofPM 1.0 /PM 2. 5 concentration accounted formorethan 80%, whichindicatedthatdominated aerosolin Tianjinwere ultrafineparticlesbelow 1 m diam eter. |
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