北京市沙尘暴天气大气气溶胶酸度和酸化缓冲能力  

Acidity and Acid Buffering Capacity of Aerosols during Sand-dust Storm Weather in Beijing

作　　者：王玮[1] 王英[2] 苏红梅[3] 潘志[1] 岳欣[1] 刘红杰[1] 汤大钢[1] 

机构地区：[1]中国环境科学研究院大气所,北京100012 [2]吉林大学环境科学系,长春130061 [3]北京工商大学环境工程系,北京100081

出　　处：《环境科学》2001年第5期25-28,共4页Environmental Science

摘　　要：20 0 0年春季 ,北京市先后出现 1 2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 。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 PM 10 (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.

关 键 词：大气气溶胶 沙尘暴 酸性降水 北京市 酸度 酸化缓冲能力 

分 类 号：X513[环境科学与工程—环境工程] X517