This standard specifies the solvent desorption gas chromatography method for determining the concentration of 1,4-butyrolactone in the air in workplaces. This standard is applicable to the determination of 1,4-butyrolactone concentration in the air in workplaces.
WS/T 158-1999 history
1999WS/T 158-1999 Workplace air.Determination of 1,4-butyrolactone.Solvent desorption gas chromatographic method
WS/T 158-1999 Workplace air.Determination of 1,4-butyrolactone.Solvent desorption gas chromatographic method was changed to GBZ/T 160.63-2004 Methods for determination of saturated aliphatic esters in the air of workplace.