This standard describes a method for determining the mass of nickel present in particles collected on a circular filter by suction of a volume of air. We can deduce the nickel content of the air sucked through the filter, when the volume sucked in is known. The method is applicable to filters on which at least 0.05 ug Ni/cm2 (flameless technique) or 1 ug Ni/cm2 (flame technique) have been collected. The new filter can contain a maximum of 0.05 μg Ni/cm2.
NBN T 94-405-1977 history
1977NBN T 94-405-1977 Determination of the nickel mass in particles collected by air fil-tration — Atomic absorption spectrophotometry