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| 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 |
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| 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） |
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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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