| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector for liquid chromatograph capable of measurement in a short period of time and capable of measuring concentration of a substance with high sensitivity, and a liquid chromatograph device using the same.SOLUTION: A light source G single-wavelength oscillates instantaneously and scans oscillation wavelength temporally. A light splitting part BS1 splits the light emitted from the light source G into signal light GLS1 and reference light GLR1. In a cell C, which is arranged in a light path of the signal light GLS1, a measurement sample separated by liquid chromatograph flows in/flows out, the measurement sample is irradiated with the signal light and it passes through the measurement sample. A multiplexing part BS2 optically multiplexes the reference light and the signal light which has passed through the cell C. A light detection part detects light intensity of interference light acquired by the multiplexing part. A data processing device 150 calculates the difference of light path length of the signal light and the reference light by Fourier-transforming a wavelength spectrum acquired by the light detection part, calculates a refractive index from the difference of the light path length and cell length and detects the concentration of the measurement sample. |
