Gas chromatography for determination of N-butylbenzene in workplace atmosphere.
- Author:
Qitao TAN
1
;
Zhaozhi ZHANG
1
;
Dongjian YAN
1
Author Information
- Publication Type:Journal Article
- MeSH: Air; analysis; Air Pollutants, Occupational; analysis; Benzene Derivatives; analysis; Chromatography, Gas; methods; Linear Models; Workplace
- From: Chinese Journal of Industrial Hygiene and Occupational Diseases 2015;33(2):146-148
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo establish a method for the determination of N-butylbenzene in the workplace atmosphere by gas chromatography.
METHODSN-butylbenzene in the workplace atmosphere was collected by activated charcoal tube, desorbed using carbon disulfide, and determined by capillary column gas chromatography.
RESULTSThe method showed a linear relationship within the range of 0∼100 µg/ml. The regression equation was y = 0.870x-0.014, with the correlation coefficient r being 0.999 9. The limit of detection was 0.32 µg/ml. The minimum detectable concentration was 0.21 mg/m³ (with sampled air volume of 1.5 L). The average spike recovery rate was 97.8%∼102.6%. The within-run precision was 3.06% and the between-run precision was 3.64%. The rate of average desorption was 99.6%. The breakthrough volume was 6.34 mg. The sampling efficiency was 100%. The samples could be stored for at least 7 days at room temperature.
CONCLUSIONAll parameters of the method meet the requirements of GBZ/T 210.4-2008 "Guide for establishing occupational health standards-Part 4 Determination methods of air chemicals in workplace" and can be applied for the determination of N-butylbenzene in workplace atmosphere.
