ISO 17378-2:2014规定了砷和锑的测定方法。该方法适用于饮用水、地表水、地下水和雨水。两种元素的ISO 17378-2:2014近似线性应用范围为0.5μg/l至20μg/l。浓度高于应用范围的样品可在适当稀释后进行分析。 一般来说，海水不在ISO 17378-2:2014的范围内。可使用标准添加方法分析海水样品，前提是对试验样品进行了验证。该方法不太可能检测有机砷和有机锑化合物。 该方法的灵敏度取决于选定的操作条件。

ISO 17378-2:2014 specifies a method for the determination of arsenic and antimony. The method is applicable to drinking water, surface water, ground water, and rain water. The approximate linear application range of ISO 17378-2:2014 for both elements is from 0,5 μg/l to 20 μg/l. Samples containing higher concentrations than the application range can be analysed following appropriate dilution. Generally sea water is outside the scope of ISO 17378-2:2014. Sea water samples can be analysed using a standard additions approach providing that this is validated for the samples under test. The method is unlikely to detect organo-arsenic and organo-antimony compounds. The sensitivity of this method is dependent on the selected operating conditions.