| 摘要: |
| 非甲烷总烃在监测过程中，废气样品保存容器的选择和保存时间的长短对分析结果有重要影响。研究结果表明：使用玻璃注射器保存样品，应在8 h内完成分析；使用泰德拉惰性气袋保存样品，保存时间可延长至48 h，如废气中主要组分为沸点高于150℃的高沸点化合物，则应在8 h内完成非甲烷总烃的测定。 |
| 关键词: 非甲烷总烃 废气 样品保存 |
| DOI： |
| 分类号:X830.1 |
| 文献标识码:B |
| 基金项目:国家环境监测标准方法制修订资助项目（No.2001300101036） |
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| Discussion on Sample Preservation in Determination of Non Methane Hydrocarbons in Waste Gas |
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PENG Tao, CHEN Lei
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Yangzhou Environmental Monitoring Centre, Yangzhou, Jiangsu 225007, China
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| Abstract: |
| The selection and storage time of sample storage containers have an important influence on the non methane hydrocarbons (NMHC) analytical results. The results show that: The glass syringe is less airtight, so the analysismust be completed within 8 h.In Tedlainert gas bag, if the main component's boiling point is higher than 150℃, the sample should be measured within 8 h,otherwise, within 48 h. |
| Key words: on methane hydrocarbons Waste gas Sample preservation |
