简易浓度测定方法的研究

浓度是反映溶液性质的一个重要参数，现有的各种测量方法各有其特点。文献［１］是根据光学原理，运用显微镜调焦方法提出了测量透明材料厚度和折射率的方法；在此基础上，根据不少溶液的折射率和浓度均有定量对应关系的特点，提出测定浓度的简易方法。该测量方法有下列特点：非接触测量，采样液体少，对液体无特殊要求，适用面广，装置简单。实验结果得出，百分浓度的测量可精确到０１％。用该方法同一些常规方法相比，测量误差在１％左右，能满足有关生产和工作中的使用要求。

Studying of simple and easy method in measuring density

Density is an important parameter showing the nature of solution, and all kinds of available methods in measuring density have their respective features. In reference , based on optical principle, and using Microscope's focusing method, a method of measuring the thickness and refractive index of transparent material is presented; Besides, according to the quantitative correspondence relationship between the refractive index and the density of some solution, a method of measuring the density of solution is presented too. The method has some features as follows: non contact measurement, little sampling, no special requirement about fluid, wide using range and simple apparatus. The result of experiment is the percentage density measuring accuracy can reach 0.1%. Compared with other conventional methods, the percentage deviation of this method is about 1%, so this method can satisfy the demands in related production and work.