scope:

This pre-standard describes a method to determine the concentration of arsenic in workplace atmosphere, using active membrane filter sampling and atomic absorption spectrometry (graphite furnace technique). The pre-standard applies to the determination of the concentration of arsenic that occurs as dust or smoke in particles with an aerodynamic diameter of at least 0.3 µ g/m3 . The total quantity of dust per filter is not allowed to exceed 2 mg. The method is not suitable for the determination of volatile arsenic compounds.