| 北京市中关村地区大气降尘的来源与垂向分布特征 |
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| 引用本文： | 秦霏,刘迎新,鲁安怀,吴新胜,王立春.北京市中关村地区大气降尘的来源与垂向分布特征[J].岩石矿物学杂志,2007,26(6):591-596. |
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| 作者姓名： | 秦霏 刘迎新 鲁安怀 吴新胜 王立春 |
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| 作者单位： | 1. 清华大学附属中学,北京,100084
2. 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 青少年科技后备人才早期培养计划 |
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| 摘 要： | 利用光学和电子显微镜、X射线衍射仪以及同步辐射X射线荧光对北京市中关村地区大气降尘的粒度分布、颗粒物微观形貌特征、矿物组成及化学元素组成等方面进行分析研究。粒度分析表明中关村地区大气降尘随着相对高度的增加,粗颗粒物逐渐减少。大气降尘的颗粒物形貌可以分为粒状、柱状单矿物,圆球状飘珠和不规则粒状集合体3种类型。矿物组成及化学元素组成的分析显示中关村地区大气降尘的污染物主要来自自然扬尘、建筑扬尘、燃煤、汽车尾气等污染源。
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| 关 键 词： | 大气降尘 粒度 矿物组成 元素 |
| 文章编号： | 1000-6524（2007）06-0591-06 |
| 收稿时间： | 2007-09-03 |
| 修稿时间： | 2007-10-10 |
Sources and perpendicular distribution of atmospheric particles in Zhongguancun area of Beijing |
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| QIN Fei,LIU Ying-xin,LU An-huai,WU Xin-sheng and WANG Li-chun The High School Attached to Tsinghua University,Beijing,China; . School of Earth and Space Science,Peking University,Beijing,China.Sources and perpendicular distribution of atmospheric particles in Zhongguancun area of Beijing[J].Acta Petrologica Et Mineralogica,2007,26(6):591-596. |
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| Authors: | QIN Fei LIU Ying-xin LU An-huai WU Xin-sheng and WANG Li-chun The High School Attached to Tsinghua University Beijing China; School of Earth and Space Science Peking University Beijing China |
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| Abstract: | Particle distribution,morphology,mineral and chemical compositions of atmospheric particles were studied by optic and electronic microscopy,X-ray diffraction and synchrotron radiation X-ray fluorescence.Statistical results demonstrate that the coarse particles of atmospheric particles in Zhongguancun area decrease with the elevation of the relative height.There are three morphological types,namely,grained and columnar individual minerals,spherical flying beads and irregular aggregates.Other analytical results show that atmospheric particles come mainly from natural dust,concrete industry,coal-fire,and automobile exhaust pollution. |
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| Keywords: | atmospheric particles particle sizes mineral composition element |
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