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/m^(3)。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。
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/m^(3).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.
作者
宋程
王颖
王小菊
常淼
沈秀娥
丁萌萌
刘保献
SONG Cheng;WANG Ying;WANG Xiao-ju;CHANG Miao;SHEN Xiu-e;DING Meng-meng;LIU Bao-xian(Beijing Municipal Ecological and Environmental Monitoring Center,Beijing Key Laboratory of Atmospheric Particulate Matter Monitoring Technology,Beijing 100048,China;Beijing Chaoyang District Environmental Protection Monitoring Center,Beijing 100123,China)
出处
《环境监测管理与技术》
CSCD
2022年第4期57-60,共4页
The Administration and Technique of Environmental Monitoring
基金
北京市科委“PM_(2.5)和O_(3)协同控制技术及优化方案研究”基金资助项目(Z191100009119001)。
关键词
乙腈
丙烯腈
超声解吸
气相色谱法
环境空气
Acetonitrile
Acrylonitrile
Ultrasonic desorption
Gas chromatography
Ambient air
