[Sampling of expiratory benzene and gas chromatography].
The method of sampling alveolar air and gas chromatography of trace benzene is reported. The lowest detectable concentration of benzene is 7.9 x 10(-4) mg/m3 in 100 ml volume. Method parameters are r = 0.999.9, mean recovery 95.14% and mean relative deviation (CV) 4.94%. 42 non-occupational and 48 occupational workers who exposed to benzene were studied by this method. The concentrations of exhaled benzene are respectively 0.016 +/- 0.011, 0.138 +/- 0.093 (before workshift) and 10.17 +/- 4.11 mg/m3 (after the end of the workshift). The results showed that this method is a simplified method for sampling alveolar air and analysis. Besides for expiratory benzene, this method can be also applied to monitoring of atmospheric trace benzene.
Hu
X Y
XY
Hangzhou Institute of Occupational Medicine.
Ni
B
B
D001554:Benzene / Q000032:analysis*; D002849:Chromatography, Gas; D006801:Humans; D016273:Occupational Exposure; D012123:Pulmonary Ventilation; D012119:Respiration
D001554:Benzene