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容量分析法是用作测定主成分物质,含量为100～1％。欲测定主成分中含量为几个毫克量副成分时,则必须提高反应灵敏度。这还是近年来发展起来的一种方法,并为容量分析法用作微量物质的测定开拓新领域。 在反应过程中,当被滴定物质的克当量数值愈小,滴定溶液的克当量数值愈大,则反应灵敏度高。例如中和法测定酒石酸钾钠,将酒石酸钾钠燃烧成氧化钾和氧化钠,再用酸测定氧化钾和氧化钠的含量。在这个反应过程中,酒石酸钾钠的中和当量为2,即一
Volumetric analysis is used to determine the main components of the material, the content of 100 ~ 1%. To determine the content of the main component in the amount of several milligrams of subcomponent, you must increase the reaction sensitivity. This is also a method developed in recent years, and for the volume analysis of trace substances used to explore new areas. In the course of the reaction, when the gram equivalent value of the titrated substance is smaller, the greater the gram equivalent value of the titration solution is, the higher the reaction sensitivity is. For example, neutralization method for the determination of potassium sodium tartrate, sodium potassium tartrate into potassium oxide and sodium oxide, followed by acid determination of potassium oxide and sodium oxide content. During this reaction, the neutralization equivalent of potassium sodium tartrate is 2, ie one