大气颗粒物表面特征分析 |
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引用本文: | 杨文敏 Sheeh.,C.大气颗粒物表面特征分析[J].中国公共卫生学报,1994,13(5):275-277. |
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作者姓名: | 杨文敏 Sheeh. C |
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作者单位: | 山西医学院环境卫生教研室 |
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摘 要: | 运用扫描电镜和X射线能谱分析仪,分析太原市6个环境监测点763个颗粒物上元素成分和形态特征。结果显示Al、Si、Ca、Fe、K、Ti、S等常量元素在颗粒物表面含量丰富,检出频率高,而Cr、Ni、As、Pb、V、Cu、Zn、Mn等微量元素在颗粒物表面含量少,检出频率低,但它们主要富集在小于2μm颗粒物表面,对人危害性大。结果还表明不同尘源颗粒物显示出不同元素含量及形态特证。
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关 键 词: | 大气颗粒物,元素,形态特征 |
Analysis of Surface Characters of Airborne Particles |
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Authors: | Yang Wenmin |
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Institution: | Taiyuan 030001 |
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Abstract: | Elemental content and morphological features of 763 airborne particles were analyzed at monitoring sites in Taiyuan using Scanning Electron Microscopy with An Energy Dispersive X-Ray Spectremeter. The results indicated that constant elements Al, Si, Ca, Fe, K, Ti, S on the particulate surface were abundance and detection freqency for them was high.whereas trace elements Cr, Ni, As, Pb, V, Cu, Zn, Mn on their surfaces were a little and detection frequency was low. But they mainly were concentracted on the particles<2um so that their hazard to human health were increased. Particles from different sources showed different element compositions and morphological features. |
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Keywords: | Airborne Particles Element Morphological feature |
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