The standard applies to aqueous solutions with a specific conductivity less than 300 mS/m (determined in accordance with NEN 6412) from which particles larger than 0.45 pm have been removed. The detection limit depends on the device used; In general, vanadium contents can be determined from 2/jg/l. For vanadium contents higher than 2.5 mg/l, use of the flame technique is recommended [2].
NEN 6463-1982 history
1982NEN 6463-1982 Water - Determination of vanadium content by atomic absorption spectrometry (graphite furnace technique)