Determination of volatile organic compounds in air by portable gas chromatography-mass spectroscopy
10.3760/cma.j.issn.1001-9391.2016.10.016
- VernacularTitle:空气中挥发性有机物测定的便携式气质联用法
- Author:
Weifeng RONG
1
;
Jiaheng HE
;
Ruibo MENG
;
Weijie LING
;
Jiawen HU
;
Jingjing QIU
;
Ming DONG
Author Information
1. 510300广州,广东省职业病防治院,广东省职业病防治重点实验室
- Keywords:
Portable GC-MS;
Occupational health;
Volatile organic compounds;
Field monitoring
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2016;34(10):777-781
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the method of portable gas chromatography-mass spectroscopy (GC-MS) for the determination of common volatile organic compounds in air.Methods The static volumetric method was used,with highly purified nitrogen gas as the diluents gas,to prepare the mixed standard gas of common volatile organic compounds with various mass concentrations.A portable GC-MS handheld probe was used for sampling and measurement,retention time and characteristic ion were used for qualitative analysis,and the full-scan mode was used for quantitative analysis.Results The correlation coefficient of 12 volatile organic compounds determined by this method was higher than 0.999.The minimum detection mass concentration was 0.02～0.12 mg/m3,and the minimum quantitative mass concentration was 0.07～0.40 mg/m3.The relative standard deviation of precision was 4.10％～12.50％;the relative deviation of acetone,benzene,methylbenzene,and dimethylbenzene was-13.56％,9.03％,-10.82％,and 8.67％,respectively.Conclusion Portable GC-MS method can be used for the qualitative analysis and quantification of volatile organic compounds in occupational hazard factors and provide technical supports for identification of occupational hazard factor.
