| 贺兰山地区春季沙尘气溶胶的化学组分和富集因子分析 |
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| 引用本文： | 牛生杰,章澄昌.贺兰山地区春季沙尘气溶胶的化学组分和富集因子分析[J].中国沙漠,2000,20(3):264-268. |
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| 作者姓名： | 牛生杰 章澄昌 |
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| 作者单位： | 1. 宁夏气象科学研究所, 宁夏 银川 750002;2. 北京气象学院, 北京 100008 |
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| 基金项目： | 国家自然科学基金!( 4 95 65 0 10 ) |
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| 摘 要： | 春季在贺兰山两侧的内蒙古吉兰泰和宁夏银川机场采集不同沙尘天气条件下的沙尘气溶胶浓度样本,用中子活化分析测定35种元素浓度,揭示了沙尘气溶胶中的元素浓度特征,沙尘天气下沙尘气溶胶中地壳元素含量增加,且含量随沙尘暴强度增强而增大。讨论了作为参考物质的地壳元素的取值及地球化学分类。沙尘气溶胶相对地壳和黄土的富集因子,以亲硫元素和亲沉积层元素为最高。亲地壳元素中的主成分元素在有沙尘天气时,其富集因子也偏高。
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| 关 键 词： | 沙尘天气 地球化学元素 浓度 富集因子 |
| 收稿时间： | 1999-11-12 |
| 修稿时间： | 1999-11-12 |
Researches on Sand Aerosol Chemical Composition and Enrichment Factor in the Spring at Helan Mountain Area |
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| NIU Sheng-jie,ZHANG Cheng-chang.Researches on Sand Aerosol Chemical Composition and Enrichment Factor in the Spring at Helan Mountain Area[J].Journal of Desert Research,2000,20(3):264-268. |
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| Authors: | NIU Sheng-jie ZHANG Cheng-chang |
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| Institution: | 1. Ningxia Institute of Meteorological Science, Yinchuan 750002, China;2. Beijing Meteorological College, Beijing 100081, China |
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| Abstract: | Sand aerosols are sampled during April and May, 1996, on both side of Helan mountain: Jilantai meteorological station, inner mongolia (West side) and Yinchuan airport, Ningxia (east side). The 35 chemical elements are analysed by using neutron activated methed (NA), and the element concentration features of sand aerosol are reported in this paper. It shows that the concentration of crust elements increases when sand and dust weather occurs, and the concentration increases with the increasing sandstorm intensity. The value of crust elements as a reference material and geochemistry classification are discussed. The enrichment factor of sand aerosol which relate to crust and loess is the highest for absorbent sulphate and sedimental elements. The enrichment factor of mainly absorbent element is also high under dust and sand weather conditions. |
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| Keywords: | dust and sand weather geochemical element concentration enrichment factor |
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