| 摘要 |
PURPOSE:To analyze a multi-fluid simultaneously and successively, by a method wherein a plurality of samples are subjected to fluid modulation at different frequencies by using comparative fluids, and an output obtained from detection by one detector is subjected to frequency separation and then rectified and smoothed. CONSTITUTION:A plurality of sample fluids, e.g. S1 and S2, are subjected to fluid modulation V1 and V2 at frequencies F1 and F2 different from each other by comparative fluids R1 and R2 by using a fluid modulation device, respective ly. Thereafter each of the sample fluids S1 and S2 subjected to fluid modulation respectively is supplied continuously to an analyzing element A having one detector D. Then a signal O outputted from the detector D through a preampli fier 2, of which the individual measuring signal components O1 and O2 corre sponding to the fluids S1 and S2 are superposed collectively, is given to a signal processing element B composed of a frequency separating circuit 3 and a signal rectifying-smoothing circuit 4. The signal is separated therein into the signal components O1 and O2 of the modulation frequencies F1 and F2 for the fluids S1 and S2 and rectified and smoothed, and thereby analytical values correspond ing to the fluids S1 and S2 are obtained. |
