ISO 12183:2016描述了核级纯硝酸钚溶液电化学分析的分析方法，单次测定的总不确定度不超过±0.2%，置信水平为0.95（覆盖系数，K=2）。该方法适用于含有0.5g\/L以上钚的水溶液和含有4mg-15mg钚的试验样品。将此技术应用于含钚量小于0.5g\/L的溶液和含钚量小于4mg的试样时，需要用户进行实验证明，以满足适用的数据质量目标。在某些应用中，测量前需要通过阴离子交换净化测试样品，以去除大量存在的干扰物质。

ISO 12183:2016 describes an analytical method for the electrochemical assay of pure plutonium nitrate solutions of nuclear grade, with a total uncertainty not exceeding ±0,2 % at the confidence level of 0,95 for a single determination (coverage factor, K = 2). The method is suitable for aqueous solutions containing more than 0,5 g/L plutonium and test samples containing between 4 mg and 15 mg of plutonium. Application of this technique to solutions containing less than 0,5 g/L and test samples containing less than 4 mg of plutonium requires experimental demonstration by the user that applicable data quality objectives will be met. For some applications, purification of test samples by anion exchange is required before measurement to remove interfering substances when present in significant amounts.