| 摘要 |
PROBLEM TO BE SOLVED: To make performable reliable quantitative analysis even for a sample with a large temperature coefficient of fluorescent intensity. SOLUTION: A sample solution to arrive at a flow cell 28 reaches a set temperature at all times so as to be measured at a constant temperature by covering a whole sample chamber with a heat insulating material 21 to be cut off thermally from the outside and by keeping the flow cell 28 and a guiding tube 27 for guiding the sample solution to the flow cell 28 at the set temperature by means of a heater 23 as a heating means, a Peltier element 24 as a cooling means, a platinum resistive element 25 as a temperature-detecting means and a temperature-controlling circuit 26. In addition, for detecting fluorescence, employing a photomultiplier having a photoelectric surface made of a material of bialkali compound semiconductor or multialkali compound semiconductor limits the temperature coefficient of the detector to a low level.
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