| 摘要 |
PURPOSE:To make possible to faithfully detect the concn. distribution of a liquid specimen without receiving the restriction of a detection limit due to the lowering in an S/N ratio, by arranging a large number of sensors along a flow cell constituted so as to reduce the volumetric space thereof as small as possible. CONSTITUTION:The liquid specimen separated and eluted from the column of a liquid chromatograph is flowing to the direction shown by the arrow from the left end of a flow cell 3 to the right end thereof. Logarithmic converting and delay circuits D1-Dn are connected to the output sides of photocells 51-5n arranged along the flow cell 3 and the output sides thereof are connected at a point M in a united state. The delay times of the logarithmic converting and delay circuits D1-Dn are set so that the respective wave forms of the concn. distributions of the liquid specimen detected by the photocells 51-5n appear at the point M at the same time. By this method, the wave form of the concn. distribution of the liquid specimen detected by each sensor is generated at the connection point M in a timewise same phase and the averaging of a noise component is attained to remove the restiction of a detection limit due to the lowering in an S/N ratio caused by the miniaturization of the sensor. |
