Portable gas chromatography for determining airborne acrylonitrile in workplaces
Author(s): LIU Jian, ZHANG Feng, ZHU Bao-li
Pages: 777-778
Year: 2013 Issue: 10
Journal: Chinese Journal of Industrial Hygiene and Occupational Diseases
Keyword: Chromatograph; Gas; Acrylonitrile;
Abstract: Objective To establish a method for rapid determination of airborne acrylonitrile using a portable gas chromatograph.Methods A single standard sample of acrylonitrile was prepared in a laboratory and sampled by the built-in constant flow pump of the portable gas chromatograph.The sample was then preconcentrated by the preconcentrator,thermally desorbed,separated by capillary columns,and detected by a micro argon ionization detector to determine the retention time.Retention time was then used to perform qualitative analysis.Under the set condition of gas chromatography,the external standard method was used to create a standard curve for quantitative analysis of acrylonitrile.Results The linear range of acrylonitrile on the portable gas chromatograph was 0.25 to 3.00 mg/m3.The regression equation was y=10-5x-0.0275,r=0.9977.The limit of detection was 0.005 mg/m3,and the lower limit of quantification was 0.25 mg/m3.The relative standard deviation was lower than 7.09％,and the degree of accuracy was 91.09-105.54％.Conclusion Portable gas chromatography is a simple,repeatable,and accurate method for rapid determination of airborne acrylonitrile.
Pages: 777-778
Year: 2013 Issue: 10
Journal: Chinese Journal of Industrial Hygiene and Occupational Diseases
Keyword: Chromatograph; Gas; Acrylonitrile;
Abstract: Objective To establish a method for rapid determination of airborne acrylonitrile using a portable gas chromatograph.Methods A single standard sample of acrylonitrile was prepared in a laboratory and sampled by the built-in constant flow pump of the portable gas chromatograph.The sample was then preconcentrated by the preconcentrator,thermally desorbed,separated by capillary columns,and detected by a micro argon ionization detector to determine the retention time.Retention time was then used to perform qualitative analysis.Under the set condition of gas chromatography,the external standard method was used to create a standard curve for quantitative analysis of acrylonitrile.Results The linear range of acrylonitrile on the portable gas chromatograph was 0.25 to 3.00 mg/m3.The regression equation was y=10-5x-0.0275,r=0.9977.The limit of detection was 0.005 mg/m3,and the lower limit of quantification was 0.25 mg/m3.The relative standard deviation was lower than 7.09％,and the degree of accuracy was 91.09-105.54％.Conclusion Portable gas chromatography is a simple,repeatable,and accurate method for rapid determination of airborne acrylonitrile.
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