| 电厂燃煤烟尘PM2.5中化学组分特征 |
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| 引用本文： | 王毓秀,彭林,王燕,张腾,刘海利,牟玲.电厂燃煤烟尘PM2.5中化学组分特征[J].环境科学,2016,37(1):60-65. |
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| 作者姓名： | 王毓秀 彭林 王燕 张腾 刘海利 牟玲 |
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| 作者单位： | 太原理工大学环境科学与工程学院, 太原 030024;华北电力大学环境与化学工程系, 北京 102206;太原理工大学环境科学与工程学院, 太原 030024;太原理工大学环境科学与工程学院, 太原 030024;太原理工大学环境科学与工程学院, 太原 030024;太原理工大学环境科学与工程学院, 太原 030024 |
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| 基金项目： | 山西省基础研究项目(2015021170);国家自然科学基金项目(41373008) |
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| 摘 要： | 采集了阳泉市具有代表性的燃煤电厂除尘器下载灰,测定了其PM_(2.5)中元素、离子及EC(元素碳)、OC(有机碳)的含量水平,对其化学组分特征进行了研究,并运用分歧系数法对阳泉与其他地区的燃煤烟尘PM_(2.5)成分谱之间的相似程度进行了比较.结果发现,阳泉市电厂燃煤锅炉排放的细颗粒物(PM_(2.5))中主要组分为SO_4~(2-)、Ca、NO_3~-、OC、EC、Al、Si、Na、Fe、Mg以及Cl~-,占PM_(2.5)总质量的57.22%;Pb在燃煤烟尘PM_(2.5)中相对富集系数最大,达到10.66~15.91,呈显著富集;无烟煤和劣质煤燃烧后烟尘的PM_(2.5)成分谱之间的分歧系数为0.072,认为这两个成分谱必定相似,与其他城市所建立的燃煤烟尘成分谱相比,阳泉市燃煤电厂PM_(2.5)的化学组分具有特异性,尤其是Ca含量明显高于国内其他地区燃煤烟尘Ca的排放.
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| 关 键 词： | PM2.5 燃煤烟尘 成分谱 富集因子 分歧系数 |
| 收稿时间： | 2015/6/17 0:00:00 |
| 修稿时间： | 2015/8/21 0:00:00 |
Characteristics of Chemical Components in PM2.5 from the Coal Dust of Power Plants |
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| WANG Yu-xiu,PENG Lin,WANG Yan,ZHANG Teng,LIU Hai-li and MU Ling.Characteristics of Chemical Components in PM2.5 from the Coal Dust of Power Plants[J].Chinese Journal of Environmental Science,2016,37(1):60-65. |
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| Authors: | WANG Yu-xiu PENG Lin WANG Yan ZHANG Teng LIU Hai-li and MU Ling |
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| Institution: | College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China;College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | The ashes under dust catcher of typical power plants in Yangquan was collected and the contents of elements, irons, EC(elemental carbon)and OC(organic carbon)were measured in PM2.. The characteristics of its chemical composition was studied and the degree of similarity of coal dust''s source profiles of PM2.5 between Yangquan and other cities were compared using the coefficient of divergence method. The result indicated that the main chemical components of PM2.5 from the coal dust were SO42-,Ca,NO3-,OC,EC,Al,Si,Na,Fe,Mg and Cl-, accounting for 57.22% of the total mass. The enrichment factor of Pb in PM2.5of coal dust was the largest with a significant enrichment condition, reaching 10.66-15.91.The coefficient of divergence of source profiles of PM2.5between blind coal and fault coal was 0.072, so it was believed that they must be similar. Compared with other cities, the chemical composition of coal dust in Yangquan had specificity, in particular, the content of Ca was obviously higher than those in other domestic cities. |
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| Keywords: | PM2 5 coal dust source profiles enrichment factor coefficient of divergence |
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