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| 邢台市采暖季PM2.5中水溶性离子污染特征及来源分析 |
| Pollution Characteristics and Sources Analysis of Water Soluble Inorganic Ions in PM2.5during Heating Season in Xingtai |
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| DOI： |
| 中文关键词: 水溶性离子 PM2.5 污染特征 来源分析 邢台市 |
| 英文关键词: Water soluble inorganic ions PM2.5 Pollution characteristics Source analysis Xingtai |
| 基金项目:国家重点研发计划专项“污染输送多时空尺度的相互作用研究”基金资助项目(2018YFC0213203)；国家重点研发计划专项“大气颗粒物同位素和元素分析技术研发与集成”基金资助项目(2017YFC0212702) |
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| 中文摘要: |
| 通过监测邢台市2017年11月15日—2018年3月15日采暖期间大气PM2.5中水溶性离子，得到水溶性离子的污染特征，并结合主成分分析方法讨论不同离子的来源。结果表明，邢台市PM2.5中水溶性离子主要由NO-3、SO2-4、NH+4组成，分别占总水溶性离子质量浓度的352%、257%、204%；SNA三元相图表明，NH+4、SO2-4、NO-3在PM2.5中占比分别为106%~402%、205%~671%、264%~562%；主成分分析结果表明，PM2.5中水溶性离子的主要来源有二次气溶胶、燃煤、交通源、生物质燃烧和土壤尘。 |
| 英文摘要: |
| Through monitoring the water soluble ions in PM2.5 during the heating season from November 15th， 2017 to March 15th， 2018 in Xingtai， the pollution characteristics of water soluble ions were studied and the sources of different ions were discussed by principal component analysis. The results showed that the water soluble ions in PM2.5 in Xingtai were mainly composed of NO-3、SO42-and NH+4， which accounting for 35.2%， 25.7% and 20.4% of the total water soluble ions mass concentration， respectively. The ternary phase diagram of SNA showed that the proportions of NH+4， SO42- and NO-3 in PM2.5were 10.6%~40.2%，20.5%~67.1% and 26.4%~56.2%， respectively. The results of principal component analysis showed that the main sources of water soluble ions in PM2.5 were secondary aerosols，coal combustion， transportation， biomass combustion and soil dust. |
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