Determination of two isomers of tetrachloroethane by solvent desorption-gas chromatography in workplace air
10.20001/j.issn.2095-2619.20230413
- VernacularTitle:溶剂解吸-气相色谱法测定工作场所空气中四氯乙烷2种异构体
- Author:
Jing YUAN
1
;
Weiming XIE
;
Fan WU
;
Jiaheng HE
;
Jiawen HU
;
Ruibo MENG
;
Weifeng RONG
;
Banghua WU
;
Chuan WU
Author Information
1. Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, Guangdong 510300, China
- Publication Type:Journal Article
- Keywords:
Workplace;
Air;
1,1,2,2-Tetrachloroethane;
1,1,1,2-Tetrachloroethane;
Solvent desorption;
Gas chromatography
- From:
China Occupational Medicine
2023;50(2):185-188
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a solvent desorption-gas chromatography method for the determination of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air. Methods: The 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air were collected using activated carbon tubes, desorbed with carbon disulfide, and separated and detected by gas chromatography. The quantifications were based on standard curves. Results: The linear ranges of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane were 0.98-395.50 and 0.87-395.50 mg/L, respectively, with the correlation coefficient of 0.999 95. The detection limits were 0.29 and 0.26 mg/L, respectively. The average of desorption efficiency was 92.04%-104.67%. The within- and between-run relative standard deviations were 1.42%-2.09% and 1.63%-6.09%, respectively. The sampling efficiency was more than 98.00%. The samples could be stored at room temperature for at least 14 days. Conclusion: This method can be used in detection of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air.
