This standard specifies the hydride generation-atomic absorption spectrometry method for determining the concentration of arsenic and its oxides in the air at workplaces. This standard is applicable to the determination of the concentration of arsenic and its oxides in the air in workplaces.
WS/T 129-1999 Workplace air.Determination of arsenic.Hydride generation atomic absorption spectrometry method was changed to GBZ/T 160.31-2004 Methods for determination of arsenic and its compounds in the air of workplace .