标准摘要
[中文适用范围]： 指定的方法基于在氧气气氛中在至少 1100 至 1200 的温度下加热一部分测试样品，使产生的氧化产物通过充满二氧化锰催化剂和高锰酸银催化剂（将 CO 氧化成CO），捕获CO2，通过恒电位滴定法或库仑滴定法添加羟基离子来连续恢复初始pH，或者通过红外吸收和所获得的信号积分来确定CO。 适用于5镕至500镕碳的测定。 [外文原描述]： The methods specified are based on heating a portion of the test sample at a temperature of at least 1100 °C to 1200 °C in an oxygen atmosphere, passing the evolved oxidation products over a purification trap filled with manganese dioxide catalyst and silver permanganate catalyst (that oxidises CO to CO 2 ), trapping the CO 2, restoring the initial pH continuously by addition of hydroxyl ions either by potentiostatic titrimetry or by coulometry, or alternatively determining the CO 2 by IR absorption and integration of the signal obtained. Is applicable to the determination of 5 µg to 500 µg of carbon.
英文名称Determination of carbon content in uranium dioxide powder and sintered pellets — High-frequency induction furnace combustion — Titrimetric/coulometric/infrared absorption methods