BS PD ISO/TS 19620:2018 specifies a method primarily developed for the determination of inorganic arsenic species (arsenite (As(III)) and arsenate (As(V)) dissolved in a sample after a preservation process in waters with a low total organic carbon content such as potable water, tap water, surface waters, ground waters and rain waters. Information is provided on the determination of potentially relevant organo-arsenic species such as methylarsonic acid (MMA) and dimethylarsinic acid (DMA) which may be encountered at very low levels in natural surface waters.

The linear working dynamic range depends on the operating conditions and the method of detection used; under standard conditions, it typically ranges from 0,5 ?g/l to 50 ?g/l for each species. Samples containing arsenic at concentrations higher than the linear dynamic range can be analysed after suitable dilution.


Cross References:
ISO 3696
ISO 17294-1
ISO 5667-1
ISO 5667-3
ISO 17378-1
ISO 17294-2
US EPA Method. 1632


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