Detection method, microchemical system using the detection method, signal detection method, thermal lens spectroscopic system, fluorescence detection system, signal detection apparatus, signal detection system, signal detection program, and storage medium

摘要

A detection method that can measure a plurality of measured substances in a fluid test sample at the same time, easily perform qualitative analysis and quantitative analysis, and reduce measurement errors between excitation energies of the measured substances, and a microchemical system using the detection method. A probe light with a wavelength of 780 nm CW-oscillated from a probe light source 16 is irradiated on measured substances in a minute channel 1 , excitation lights with wavelengths of 658 nm and 532 nm, respectively, are modulated into plurality of flashing excitation lights with frequencies 1 kHz and 1.2 kHz and a duty factor of 50% and irradiated on the measured substances in the minute channel 1 , the probe light refracted by a thermal lens formed by the irradiated flashing excitation lights is detected with respect to individual frequency components at the same time, and a signal of the detected probe light is guided from a PD 21 to a PC 24 as a signal processing apparatus via an IV amplifier 22 . The PC 24 carries out FFT processing to measure the intensity of the signal with respect to individual frequency components.