This standard specifies the thermal desorption gas chromatography method for determining the concentration of methyl isobutyl ketone in the air at workplaces. This standard is applicable to the determination of methyl isobutyl ketone concentration in the air in workplaces.
WS/T 140-1999 history
1999WS/T 140-1999 Workplace air.Determination of methylisobutylketone.Desorption with heating gas chromatographic method
WS/T 140-1999 Workplace air.Determination of methylisobutylketone.Desorption with heating gas chromatographic method was changed to GBZ/T 160.55-2004 Methods for determination of aliphatic ketones in the air of workplace.