Determination of dimethyl carbonate in workplace air by solvent desorption-gas chromatography
10.20001/j.issn.2095-2619.20230412
- VernacularTitle:溶剂解吸-气相色谱法测定工作场所空气中碳酸二甲酯
- Author:
Jiaheng HE
1
;
Jing YUAN
;
Weifeng RONG
;
Jiawen HU
;
Ruibo MENG
;
Guanlin CHEN
;
Banghua WU
Author Information
1. Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, Guangdong 510300, China
- Publication Type:Journal Article
- Keywords:
Workplace;
Air;
Dimethyl carbonate;
Solvent desorption;
Gas chromatography
- From:
China Occupational Medicine
2023;50(2):181-184
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a solvent desorption-gas chromatography method for determination of dimethyl carbonate (DMC) in workplace air. Methods: The air samples were collected using activated carbon tubes, desorbed by carbon disulfide, separated by dimethylpolysiloxane capillary columns, and detected by a flame ionization detector. Results: The linear range of DMC was 2.14 to 1.07×104 mg/L, and the correlation coefficient was greater than 0.999. The detection limit was 0.14 mg/L, the lower limit of quantification was 0.47 mg/L, the minimum detection concentration was 0.10 mg/m3, and the minimum quantification concentration was 0.32 mg/m3 (based on 1.5 L workplace air). The average desorption efficiency of the method was 96.2% to 102.0%. Both the within-run and between-run relative standard deviations were 0.9% to 2.3%. The samples could be stored for at least seven days at four celsius degree. Conclusion: This method shows high desorption efficiency, high sensitivity, good precision and is simple in using. It can be used for the determination of DMC in workplace air.
