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文章摘要
超低沸点挥发性有机物测定中的要点分析
Key Points of Ultralow Boiling Point Volatile Organic Compounds Analysis
  
DOI:
中文关键词: 超低沸点  挥发性有机物  气相色谱法  环境空气
英文关键词: Ultralow boiling point  Volatile organic compounds  Gas chromatography  Ambient air
基金项目:国家环境保护公益性行业科研专项基金资助项目(201509002);国家环境保护标准制修订基金资助项目(2019-4)
作者单位
王荟 江苏省环境监测中心 
高占啟 江苏省环境监测中心 
赵艳 江苏省环境监测中心 
李媛 江苏省环境监测中心 
严䶮 江苏省环境监测中心 
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中文摘要:
      采用大气浓缩仪-气相色谱法测定超低沸点挥发性有机物乙烷、乙烯、丙烷、丙烯、乙炔,选用PLOT-Q柱分析,控制真空罐内相对湿度约50%,通过优化测定条件使方法线性良好,5种低沸点化合物的检出限为0.08 nmol/mol~0.2 nmol/mol,样品保存时间不超过10 d。用该方法测定某地区环境空气中VOCs,结果检出率均为100%。
英文摘要:
      Ultralow boiling point volatile organic compounds such as ethane, ethylene, propane, propylene and acetylene were determined by air concentrator gas chromatography with PLOT Q column. The method had good linearity with 50% relative humidity in the vacuum tank and optimized instrument parameters. The detection limits of five low boiling point compounds ranged from 0.08 nmol/mol to 0.2 nmol/mol. The sample storage time was within 10 days. The method was applied to VOCs determination in ambient air of an area and the detection rate was 100%.
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