BS PD ISO/TS 19620:2018规定了一种主要用于在饮用水、自来水、地表水、地下水和雨水等总有机碳含量较低的水中保存后，测定样品中溶解的无机砷种类（亚砷酸盐（As（III））和砷酸盐（As（V））的方法。提供了有关测定天然地表水中可能遇到的潜在相关有机砷物种的信息，如甲基胂酸（MMA）和二甲基胂酸（DMA）。线性工作动态范围取决于工作条件和使用的检测方法； 在标准条件下，其范围通常为0,5？g/l到50？每种植物的g/l。在适当稀释后，可分析浓度高于线性动态范围的含砷样品。交叉引用:ISO 3696ISO 17294-1ISO 5667-1ISO 5667-3ISO 17378-1ISO 17294-2US EPA方法。1632购买本文件时可获得的所有现行修订均包含在购买本文件中。

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 3696ISO 17294-1ISO 5667-1ISO 5667-3ISO 17378-1ISO 17294-2US EPA Method. 1632All current amendments available at time of purchase are included with the purchase of this document.