| 大气中飘尘的SEM与EDS研究 |
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| 引用本文： | 姚子华,张轶华,赵凯,杨更亮.大气中飘尘的SEM与EDS研究[J].河北大学学报(自然科学版),2004,24(5):489-493. |
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| 作者姓名： | 姚子华 张轶华 赵凯 杨更亮 |
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| 作者单位： | 河北大学,化学与环境科学学院,河北,保定,071002;中国农业大学,水利与土木工程学院,北京,100083 |
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| 摘 要： | 利用扫描电子显微镜(SEM)和X射线能谱仪(EDS)对在城市采集的大气中的飘尘进行了形态观察和X射线微区分析.通过对保定市不同地点采集到的大量飘尘颗粒进行X射线微区元素分析,得到冬季末期城市大气飘尘所含主要元素,从而对飘尘的形成原因及来源有了基本了解.对采集到的气溶胶颗粒的微区分析,发现含有比较明显的硫,氯成分,而且主要分布在颗粒外层.这表明冬季采暖烟尘排放是造成这类气溶胶颗粒形成的主要原因.研究证明,X射线微区分析对气溶胶的形成机理研究是一种有效的方法.
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| 关 键 词： | SEM 大气飘尘 颗粒物 X射线微区分析 气溶胶 |
| 文章编号： | 1000-1565(2004)05-0489-05 |
| 修稿时间： | 2003年11月8日 |
X-ray Microanalysis for Particulates in Air |
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| YAO Zi-hua,ZHANG Yi-hua,ZHAO Kai,YANG Geng-liang.X-ray Microanalysis for Particulates in Air[J].Journal of Hebei University (Natural Science Edition),2004,24(5):489-493. |
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| Authors: | YAO Zi-hua ZHANG Yi-hua ZHAO Kai YANG Geng-liang |
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| Institution: | YAO Zi-hua~1,ZHANG Yi-hua~1,ZHAO Kai~2,YANG Geng-liang~1 |
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| Abstract: | Airborne particulates collected from 107 Road and Junxiao Square in Baoding City were studied with scanning electron microscope (SEM) and energy dispersive X_ray microanalysis(EDS) to obtain chemical composition and associated morphological characteristics. According to the quantitative analysis, the average concentration was abtained, then the source of particles and the reason of formation was acquainted.The result of the analysis of the aerosol shows that apparent constitution of sulfur ,chlorine is in the outer layer of the particles. The result shows that the main reason for the formation of aerosol particles is the grey dirt emiting from residence. This work demonstrates that X_ray microanalysis is feasible for researching the formation mechanism of aerosol |
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| Keywords: | SEM airborne particulate X_ray microanalysis aerosol |
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