ISO 19340:2017规定了水中溶解高氯酸盐的测定方法（例如饮用水、矿泉水、原水、地表水、部分处理水或游泳池水、饮用水/游泳池水处理厂的废水）。 适当的样品预处理（如基体消除）可直接测定高氯酸盐≥ 1微克/升。 工作范围受到分离器柱离子交换能力的限制。可能需要将样品稀释至工作范围。

ISO 19340:2017 specifies a method for the determination of dissolved perchlorate in water (e.g. drinking water, mineral water, raw water, surface water, partially treated water or swimming pool water, waste water from drinking/swimming pool water treatment plants). Appropriate pre-treatment of the sample (e.g. matrix elimination) allows a direct determination of perchlorate ≥ 1 μg/l. The working range is restricted by the ion-exchange capacity of the separator column. Dilution of the sample to the working range can be necessary.