| 北京市沙尘暴天气大气气溶胶酸度和酸化缓冲能力 |
| 摘要点击 2368 全文点击 2445 投稿时间：2000-11-07 |
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| 中文关键词 大气气溶胶 沙尘暴 酸性降水 北京市 |
| 英文关键词 aerosols sand-dust storm acidic precipitation Beijing |
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| 中文摘要 |
| 2000年春季,北京市先后出现12次沙尘暴天气.本研究捕捉到2次沙尘暴天气,分析了沙尘暴天气和非沙尘暴天气TSP、PM10的质量浓度、酸度和酸化缓冲能力.研究结果表明发生沙尘暴时大气气溶胶的污染水平极高,同时其酸度相对较低,对酸化有非常强的缓冲能力,因此沙尘暴天气时产生的大气气溶胶可以在一定程度上避免酸性降水的发生. |
| 英文摘要 |
| In the spring of 2000,there were 12 sand-dust storms in Beijing.2 sand-dust storms were experienced in time and mass concentrations,elementary concentrations acidity and acidic buffering capacity of TSP(Total Suspended Particulate,<100μm)and PM10 (Inhalable particulate,<10μm)were sampled and analyzed.Results showed that pollution level of aerosols was extremely high.However,the acidity of aerosols was relatively low and the aerosols had very strong acid buffering capacity for acidification.Therefore,the aerosols brought about by the sand-dust storms could avoid the occurrence of acidic precipitation to some extent. |
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