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在光学测量中,被测溶液相对于空气(或真空)透射比的测量,都是把液体装在特制的透明样品池中进行的。现将测量液体透射比的方法简述如下: 首先将分光光度计按测试要求调整好,然后选取一对相同规格的透明样品池供测试时使用。将一只空样品池放置于测试光路中,调整仪器,使仪器指示值为100％,然后将另一只样品池装满被测液体,置换光路中的空样品池,此时将获得透射比读数值T。下面我们将看到。用这种方法测出的透射此值是不准确的,为此必须对测量值进行修正。
In optical measurement, the measurement of the transmittance of the solution to be measured relative to air (or vacuum) is carried out by placing the liquid in a specially prepared transparent cuvette. Now measure the liquid transmission method is as follows: First, the spectrophotometer according to test requirements to adjust, and then select a pair of transparent samples of the same size for testing purposes. Place an empty sample cell in the test light path, adjust the instrument so that the instrument indicates 100%, and then fill the other cell with the fluid under test and replace the empty cell in the light path, where the transmittance Read the value of T. Below we will see. The transmission of this value measured in this way is inaccurate, for which reason the measured values must be corrected.