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| 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PM<sub>2.5</sub>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<sup>+</sup>、Mg<sup>+</sup>、K<sup>+</sup>、NH<sup>+</sup><sub>4</sub>、Fe<sup>+</sup>、Pb<sup>+</sup>、Cd<sup>+</sup>、V<sup>+</sup>、Mn<sup>+</sup>、Li<sup>+</sup>、Al<sup>+</sup>、Ca<sup>+</sup>、Cu<sup>+</sup>、Zn<sup>+</sup>、Cr<sup>+</sup>、CN<sup>-</sup>、PO<sup>-</sup><sub>4</sub>、NO<sup>-</sup><sub>2</sub>、NO<sup>-</sup><sub>3</sub>、Cl<sup>-</sup>、SO<sup>2-</sup><sub>4</sub>、SiO<sup>-</sup><sub>3</sub>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 Zhi peng， SONG Shao hua， YI Chun sheng， JI Xiao mei， LI Yong shan
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| Abstract: |
| PM<sub>2.5</sub>of 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 PM<sub>2.5</sub> were analyzed using source apportionment of on line single particle aerosol mass spectrometry. The results showed that the particle size distribution of PM<sub>2.5</sub>of four category emission sources was between 0.25 μm and 1.25 μm， and more than 80% of PM<sub>2.5</sub>distributed in the range of 0.2 ~ 1.0 μm， which peaks at about 0.68 μm. Ionic components of PM<sub>2.5</sub> contained Na<sup>+</sup>、Mg<sup>+</sup>、K<sup>+</sup>、NH<sup>+</sup><sub>4</sub>、Fe<sup>+</sup>、Pb<sup>+</sup>、Cd<sup>+</sup>、V<sup>+</sup>、Mn<sup>+</sup>、Li<sup>+</sup>、Al<sup>+</sup>、Ca<sup>+</sup>、Cu<sup>+</sup>、Zn<sup>+</sup>、Cr<sup>+</sup>、CN<sup>-</sup>、PO<sup>-</sup><sub>4</sub>、NO<sup>-</sup><sub>2</sub>、NO<sup>-</sup><sub>3</sub>、Cl<sup>-</sup>、SO<sup>2-</sup><sub>4</sub>、SiO<sup>-</sup><sub>3</sub>， etc. PM<sub>2.5</sub> 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 |
