摘要:
A high-pressure fluorescence flow cell comprises a cell body made of a light-transmissive material, wherein the cell body is penetrated by a straight-line flow path for a high-pressure fluid, wherein the flow path is formed with a cross section of 0.1 mm 2 to 5 mm 2 , both inclusive, orthogonal to its longitudinal direction, wherein the ratio t/d of the wall thickness t (mm) to the width d (mm) of the flow path satisfies formula (1) below, t d ≧ 1 2 × σ + P σ - P - 1 × 1.5 where σ indicates the tensile stress (MPa) of the material of the cell body, and P indicates the withstand pressure (MPa) of the cell body.
摘要:
A light detection apparatus for liquid chromatographs includes a main body having a flow cell mounting space for receiving either a removable first flow cell (15) adapted to hold a fluorescent light emitting sample or a removable second flow cell (16) adapted to hold a chemiluminescent light emitting sample, an excitation light source (11) provided in the main body to emit excitation light toward the flow cell mounting space, a monochromater (18) for dispersing fluorescent light from the first flow cell into monochromatic light when the first flow cell is mounted within the flow cell mounting space, a first light detector (19) for receiving the dispersed fluorescent light from the monochromater, a second light detector (25) for receiving chemiluminescent light from the second flow cell when the second flow cell is mounted within the flow cell mounting space, a signal processing device (22) which receives detection signals from either the first or second light detectors and carries out a prescribed signal process on such detection signals in order to output either fluorescent light output signals or chemiluminescent light output signals, and a shutter (27) which prevents light from reaching the second light detector when the first light detector is detecting fluorescent light.
摘要:
A light detection apparatus for liquid chromatographs includes a main body having a flow cell mounting space for receiving either a removable first flow cell (15) adapted to hold a fluorescent light emitting sample or a removable second flow cell (16) adapted to hold a chemiluminescent light emitting sample, an excitation light source (11) provided in the main body to emit excitation light toward the flow cell mounting space, a monochromater (18) for dispersing fluorescent light from the first flow cell into monochromatic light when the first flow cell is mounted within the flow cell mounting space, a first light detector (19) for receiving the dispersed fluorescent light from the monochromater, a second light detector (25) for receiving chemiluminescent light from the second flow cell when the second flow cell is mounted within the flow cell mounting space, a signal processing device (22) which receives detection signals from either the first or second light detectors and carries out a prescribed signal process on such detection signals in order to output either fluorescent light output signals or chemiluminescent light output signals, and a shutter (27) which prevents light from reaching the second light detector when the first light detector is detecting fluorescent light.
摘要:
A high-pressure fluorescence flow cell comprises a cell body made of a light-transmissive material, wherein the cell body is penetrated by a straight-line flow path for a high-pressure fluid, wherein the flow path is formed with a cross section of 0.1 mm 2 to 5 mm 2 , both inclusive, orthogonal to its longitudinal direction, wherein the ratio t/d of the wall thickness t (mm) to the width d (mm) of the flow path satisfies formula (1) below, t d ≧ 1 2 × σ + P σ - P - 1 × 1.5 where σ indicates the tensile stress (MPa) of the material of the cell body, and P indicates the withstand pressure (MPa) of the cell body.