Determination of two isomers of tetrachloroethane by solvent desorption-gas chromatography in workplace air / 中国职业医学
China Occupational Medicine
;
(6): 185-188, 2023.
Article
in Chinese
| WPRIM
| ID: wpr-996546
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
China Occupational Medicine
Year:
2023
Type:
Article
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