Determination of 6 BTEXs in urine by purge and trap with gas chromatography-mass spectrometry.
10.3760/cma.j.cn121094-20210426-00233
- Author:
Jing Qi LAI
1
;
Shao Yang LAI
1
;
Xiao Li YE
1
;
Chao WANG
2
;
Min YE
1
Author Information
1. Laboratory of Physical and Chemical, Shenzhen Luohu District Center for Disease Control and Prevention, Shenzhen 518020, China.
2. Chemical Analysis & Physical Testing Institute, Shenzhen Center for Disease Control and Prevention, Shenzhen 518000, China.
- Publication Type:Journal Article
- Keywords:
BTEXs;
Chromatography-Mass Spectrometry;
Purge and trap;
Urine
- MeSH:
Gas Chromatography-Mass Spectrometry/methods*;
Occupational Exposure
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2022;40(8):619-622
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a method for detection of 6 BTEXs in urine by Purge and Trap-Gas Chromatography-Mass Spectrometry. Methods: The urine sample need not be diluted, but directly purge and trap in the bottle, separated by gas chromatography column, then simultaneously analyzed by retention time locking (RTL) method and selective ion scanning mode (SIM) . Results: The linear range of 6 BTEXs in urine was good, the correlation coefficient was between 0.997 4 and 0.998 9. The minimum quantification limits was 0.010-0.036 μg/L. The precision was 1.9%-4.7%, and the recovery was 93.1%-101.9%. Conclusion: The method has the advantages of wide linear range, high sensitivity and recovery. It is suitable for the determination of 6 BTEXs in urine of low level occupational-exposed or non-exposed population.
