利用折光率方法测定溶液的浓度,国外有不少文献报道了这方面的工作:(1)测定了一部分药房常用溶液不同浓度的折光率;(2)找出了折光率与浓度的关系:溶液当采用重/重浓度时,折光率与浓度成二次曲綫关系;当采用重/容浓度时,则成直綫关系;(3)温度对折光率与浓度关系的影响:有的文献指出,溶液折光率与浓度的关系不受温度的影响,而有的文献又报道溶液的折光率与浓度的关系随温度而异,提高温度可使曲綫关系变为直綫关系。国内有些单位在这方面也进行了一些工 The use of refractive index method to determine the concentration of the solution, many foreign literature reports on the work in this area: (1) Determination of some of the commonly used solutions of different concentrations of the refractive index of the solution; (2) Find out the refractive index and concentration relationship: solution When using heavy / heavy concentration, the refractive index and concentration of a quadratic curve relationship; when using the weight / volume concentration, then a linear relationship; (3) temperature on the refractive index and concentration relationship: Some literature pointed out that the solution The relationship between refractive index and concentration is not affected by temperature, and some literature reports that the relationship between refractive index and concentration of solution varies with temperature. Increasing the temperature can change the relationship of the curve into a linear relationship. Some domestic units also carried out some work in this area