| 摘要 |
PURPOSE:To obtain a highly reliable analytical result by mounting a means selectively measuring absorbancy, an absorbancy memory means and an operation means. CONSTITUTION:A predetermined amount of a specimen is injected in a specimen injection station 3 and a predetermined amount of a reaction reagent is injected in a reagent injection station 4 to prepare a specimen reaction solution. In a stage wherein a reaction cell 2 arrives at a measuring station 5, an operational control apparatus 12 selects an absorbancy signal in an equal absorption wavelength Alambda1 and analytical wavelengths Alambda1, Alambda2. The control apparatus 12 calculates the ratio of an equal absorption wavelength Alambda1k and the absorbancy Alambda1b stored in a memory circuit 15 and operates the product of said ratio and the absorbancy difference of analytical wavelengths Alambda1k, Alambda2k to output a value corrected in the error caused by the light path difference of the reaction cell 2 used in analysis now. The difference between two differences of the value after correction and the analytical wavelengths of a specimen blank solution is calculated to be multiplied by a concn. conversion coefficient to obtain a value which is, in turn, operated to calculate the concn. of an objective component. By this method, the concn. value of the objective component corrected in the error due to the light path length fluctuation of the cell 2 can be obtained. |
