GB/T 5750.7-2006《生活饮用水标准检验方法有机物综合指标》中一处标注探讨

Study on a labeling of drinking water standard test method for organic synthesis index

摘要: 标准GB/T 5750.7-2006、GB11892-1989分别测定耗氧量及高锰酸盐指数,虽然两种方法的原理和实验步骤基本一致,但是两种方法的计算公式中浓度c的标注却不一致。通过方法验证,证明标准GB/T 5750.7-2006耗氧量浓度的计算公式中浓度c的标注为高锰酸钾标准溶液的浓度是错误的,应标注为草酸钠标准溶液的浓度。

Abstract: Oxygen consumption and permanganate index were measured by the standard GB/T5750.7-2006, GB11892-1989.Although the two method principle and test procedures were basically same, two methods of calculating formula of concentration annotations were not consistent.Through the method validation, it was proved that the concentration in the calculation formula of oxygen consumption marked for concentration of potassium permanganate standard solution in the standard GB/T5750.7-2006 was wrong, it should be labeled as sodium oxalate standard solution concentration.