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| 超声解吸-气相色谱法同时测定环境空气中乙腈和丙烯腈 |
| Simultaneous Determination of Acetonitrile and Acrylonitrile in Ambient Air by Ultrasonic Desorption and Gas Chromatography |
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| DOI： |
| 中文关键词: 乙腈 丙烯腈 超声解吸 气相色谱法 环境空气 |
| 英文关键词: Acetonitrile Acrylonitrile Ultrasonic desorption Gas chromatography Ambient air |
| 基金项目:北京市科委“PM2.5和O3协同控制技术及优化方案研究”基金资助项目（Z191100009119001） |
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| 中文摘要: |
| 采用大容量活性炭管吸附环境空气，丙酮-二硫化碳混合溶液（体积比为1∶1）超声解吸目标物，用气相色谱法（带FID检测器）同时测定样品中乙腈和丙烯腈。通过优化试验条件，使方法在1.00 mg/L~50.0 mg/L范围内线性良好，乙腈和丙烯腈的方法检出限均为0.003 mg/m3。低、中、高3个质量浓度水平的模拟环境样品6次测定结果的RSD为3.4%~7.0%，加标回收率为86.8%~102%。用该方法在北京某石化公司厂界布设采样点测定，结果为未检出。 |
| 英文摘要: |
| Acetonitrile and acrylonitrile were simultaneously determined by gas chromatograph (with FID detector) using large capacity activated carbon tube to adsorb ambient air and acetone-carbon disulfide mixed solution (1∶1 by volume ratio) for ultrasonic desorption of the targets. By optimizing the test conditions, the linearity of the method was good in the range of 1.00 mg/L to 50.0 mg/L, the method detection limits of both acetonitrile and acrylonitrile were 0.003 mg/m3. The RSDs of 6 measurements of simulated environmental samples with low, medium and high mass concentration levels were in the range of 3.4% to 7.0%, and the spiked recoveries were in the range of 86.8% to 102%. The method was applied to the determination of acetonitrile and acrylonitrile at the boundary of a petrochemical company in Beijing, the results were undetected. |
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