Study on determination of ethylal in workplace air by gas chromatography
10.3760/cma.j.issn.1001-9391.2018.06.024
- VernacularTitle: 工作场所空气中二乙氧基甲烷的气相色谱法研究因素分析
- Author:
Weijie LING
1
;
Weifeng RONG
;
Peixian CHEN
;
Shihao TANG
;
Shaoxiong XU
;
Hai ZHANG
;
Yimin LIU
Author Information
1. Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China
- Publication Type:Journal Article
- Keywords:
Ethylal;
Workplace;
Air;
Solvent desorption;
Gas chromatography
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2018;36(6):471-473
- CountryChina
- Language:Chinese
-
Abstract:
Objective:A solvent desorption-gas chromatography method for determination of ethylal in workplace air has been established.
Methods:Ethylal in workplace air was collected by activated carbon tube and desorbed with carbon disulfide, and the desorption solutions were analysed by capillary column GC with FID detector.
Results:The method presented a good linearity in the range of 0.87~34 800.00 mg/L of ethylal in the standard solution, with the correlation coefficient being r=0.999 7. The limit of detection and the limit of quantification of this method were respectively 0.20 mg/L and 0.80 mg/L, and the minimum detectable concentration and the minimum quantification concentration of this method were respectively 0.17 mg/m3 and 0.60 mg/m3 per 1.50 L of air.The within-run precision of the method was 2.93%-6.20%, and the between-run precision 3.67%-6.44%. The desorption efficiency between 94.22%-97.27%. Ethylal in activated carbon tube could be kept at least 7 days at room temperature without significant loss.
Conclusion:The method could be used for determination of ethylal in workplace air.
