This standard specifies the pumpless sampler sampling and solvent desorption gas chromatography method for the determination of the time-weighted average concentration (TWA) of benzene in the air at workplaces. This standard is applicable to the determination of the time-weighted average concentration of benzene in the air in workplaces.
WS/T 151-1999 history
1999WS/T 151-1999 Workplace air.Determination of benzene.Passive samping gas chromatographic method
WS/T 151-1999 Workplace air.Determination of benzene.Passive samping gas chromatographic method was changed to GBZ/T 160.42-2004 Methods for determination of aromatic hydrocarbons in the air of workplace.