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文章摘要
武汉南郊高校内不同功能区PM2.5化学成分分析
Analysis on PM2.5 Chemical Composition in Different Functional Areas of A University in Southern Suburb of Wuhan
  
DOI:
中文关键词: PM2.5  水溶性离子  富集系数  源解析  高校  武汉南郊
英文关键词: PM2.5  Water soluble ions  Enrichment coefficient  Source apportionment  University  Southern suburb of Wuhan
基金项目:中央高校基本科研业务费专项基金资助项目(2012ZYTS033);华中农业大学2016年度创新性实验教学基金资助项目(2016028)
作者单位
李丹丹 华中农业大学植物科学技术学院 
韩昊展 华中农业大学资源与环境学院 
杨韫哲 华中农业大学资源与环境学院 
汪明霞 华中农业大学资源与环境学院 
万田英 华中农业大学资源与环境学院 
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中文摘要:
      通过在武汉某高校校园的生活区、运动场、实验田区和施工区布设4个采样点,检测分析PM2.5及其中金属元素和水溶性无机离子的含量。结果表明,施工区PM2.5平均值超标0.3倍,其余三区均达标,校园大气环境总体良好;PM2.5中质量浓度较高的元素为Fe、Mg、Mn、Pb;Cd、Pb的富集因子>100,判断其来源于建筑施工、实验田翻耕、汽车尾气等人为污染;PM2.5中主要水溶性无机离子为SO2-4和NO-3,生活区、施工区的NO-3及生活区的SO2-4主要来源于二次污染,施工区SO2-4来源于二次污染和施工材料;X射线衍射显示施工区PM2.5中存在石英、高岭石等矿物。
英文摘要:
      The content of PM2.5 as well as metal elements and water soluble inorganic ions in it from 4 sampling sites representing respectively living quarters, sports field, experimental field and construction area in a university in Wuhan were analyzed. The results showed that the mean value of PM2.5in construction area was 0.3times over the standard, while in the rest 3 areas, it achieved the standard, indicating good atmospheric environment on the campus. The concentration of Fe, Mg, Mn, Pb in PM2.5 were high. The enrichment factor of Cd and Pb were greater than 100, and they were judged as from building construction, experimental field tillage, automobile exhaust and other man made pollution. The main water soluble inorganic ions in PM2.5 were SO2-4 and NO-3. SO2-4 and NO-3 from living quarters, and NO-3 from construction area were mainly derived from secondary pollution. SO2-4 in construction area was from secondary pollution and construction materials. Quartz and kaolinite were detected in PM2.5 from construction area by X ray diffraction method.
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