比色分析是一种很重要的分析方法。利用比色法可以比较迅速地得到相当准确的结果。一般说来,这种方法的灵敏度是很高的,例如生物体液中含量甚微的成分常常是利用比色法测定。因此在某些方面,特别是在生物化学方面,比色法占有极其重要的地位。比色法的要点就是使被测物质与一定的试剂作用而产生颜色,再比较未知液与标准液所呈的颜色以确定未知液的渡度。比色时所用的仪器过去一般多采用目光比色计,但是近年来光电比色计的应用已日趋普遍;因为光电比色 Colorimetric analysis is a very important analytical method. Using colorimetric method can get fairly accurate results relatively quickly. In general, the sensitivity of this method is very high, for example, the content of biological fluid is very small content is often determined by colorimetry. Therefore, in some aspects, especially in biochemistry, colorimetric method occupies an extremely important position. Colorimetric method is to make the test substance and a certain reagent to produce color, and then compare the color of unknown solution and standard solution to determine the unknown degree of transition. In the past, the colorimetric instruments used were mostly colorimeters, but the use of colorimetric colorimeters has become more commonplace in recent years;