| 摘要: |
| 采用在线单颗粒气溶胶质谱技术源解析方法，对桂林市PM2.5典型排放源的粒径和化学成分进行质谱分析，采集燃煤/燃气源、工业工艺源、扬尘源、油烟源4类共计7个典型排放源。结果表明，桂林市4类排放源细颗粒物的粒径分布为0.25～1.25μm，80%以上的细颗粒分布在0.2～1.0μm的小粒径范围，峰值约0.68μm。细颗粒物离子成分含有Na+、Mg+、K+、NH+4、Fe+、Pb+、Cd+、V+、Mn+、Li+、Al+、Ca+、Cu+、Zn+、Cr+、CN-、PO-4、NO-2、NO-3、Cl-、SO2-4、SiO-3等成分，桂林市细颗粒物为元素碳、有机碳元素碳、有机碳、富锰颗粒、富铁颗粒、富钾颗粒、矿物质、左旋葡聚糖以及其他金属等9类。 |
| 关键词: 单颗粒气溶胶质谱 源解析 典型排放源 桂林 可入肺颗粒物 |
| DOI： |
| 分类号:X513 |
| 文献标识码:B |
| 基金项目:桂林市环境保护专项资金资助项目［201501（HJBHZXZJ201501）］ |
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| Particle Size Spectra and Chemical Composition Analysis of Some Typical Emission Source from PM2.5 in Guilin |
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DU Juan， ZHANG Zhipeng， SONG Shaohua， YI Chunsheng， JI Xiaomei， LI Yongshan
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Guilin Environmental Monitoring Center， Guilin，Guangxi 541002， China
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| Abstract: |
| PM2.5of four categories were collected from seven typical emission sources in Guilin， such as coal fired/gas source， industrial process source， dust source， and soot source. The particle size and chemical composition of PM2.5 were analyzed using source apportionment of on line single particle aerosol mass spectrometry. The results showed that the particle size distribution of PM2.5of four category emission sources was between 0.25 μm and 1.25 μm， and more than 80% of PM2.5distributed in the range of 0.2 ~ 1.0 μm， which peaks at about 0.68 μm. Ionic components of PM2.5 contained Na+、Mg+、K+、NH+4、Fe+、Pb+、Cd+、V+、Mn+、Li+、Al+、Ca+、Cu+、Zn+、Cr+、CN-、PO-4、NO-2、NO-3、Cl-、SO2-4、SiO-3， etc. PM2.5 in Guilin included nine classes， such as elemental carbon， organic carbon elemental carbon， organic carbon， manganese rich particles， iron rich particles， potassium rich particles， minerals， L glucan and other metals. |
| Key words: Single particle aerosol mass spectrometry Source apportionment Typical emission source Guilin PM2.5 |
