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| 石家庄市大气颗粒物中水溶性无机离子污染特征研究 |
| Pollution Characteristic of Water Soluble Inorganic Ion in Atmospheric Particles in Shijiazhuang |
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| DOI： |
| 中文关键词: 水溶性无机离子 污染特征 大气颗粒物 石家庄 |
| 英文关键词: Water soluble inorganic ion Pollution characteristic Atmospheric particle Shijiazhuang |
| 基金项目:河北省科技支撑基金资助项目（13273702D） |
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| 摘要点击次数: 1904 |
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| 中文摘要: |
| 用超声萃取-离子色谱法分析了石家庄市大气颗粒物中8种水溶性无机离子。结果表明，NO-3、SO2-4、NH+4及Ca2+为主要组分；各个离子的质量浓度均有季节及空间变化差异；不同粒径颗粒物中SO2-4和NO-3相关性均很好，NH+4与SO2-4、NO-3在细颗粒物中具有良好的相关性，Ca2+在粗粒子中与NO-3和SO2-4的相关性也较好。SO2-4/NO-3质量比季节变化表明，春、夏季固定源与流动源对大气颗粒物贡献相当，秋季流动源贡献较大，冬季固定源贡献较大。PM2.5中SO2与SO2-4、NO2与NO-3转化率表明，SO2-4、NO-3主要是由二次转化而来。 |
| 英文摘要: |
| Eight water soluble inorganic ions were analyzed by Ultrasonic Extraction Ionic Chromatography in the atmospheric particles in Shijiazhuang. The main water soluble inorganic ions were NO-3,SO2-4,NH+4and Ca2+.Each component concentration had seasonal and spacial variation. High linear correlation between SO2-4 and NO-3in different diametric atmospheric particles.The linear correlation between NH+4 and SO2-4,NH+4 and NO-3 were well in fine particles. The linear correlation between Ca2+and SO2-4 ,Ca2+ and NO-3 were well in coarse particles. The seasonal variation of SO2-4/NO-3 showed that stationary sources and moving source had similar contribution to the atmospheric particles in spring and summer. The moving source contribution was greater in Autumn and the stationary source contribution was greater in Winter. The conversion rates between SO2 and SO2-4,NO2 and NO-3 showed that SO2-4 and NO-3 were mainly from secondary conversion. |
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