| 摘要 |
PURPOSE: To enable trace components to be detected without such processes as fluorescent labeling or derivatization. CONSTITUTION: A beam emitted from an UV light source 1 is focused at a slit position by a condensing lens 7, and a pinhole 2 is placed at a light-source focusing position to reduce the light source size to a capillary bore or less. The beam from the light source is converted into a parallel beam, which is then transmitted through a half mirror 10 and focused inside a capillary 4 by a condensing lens 9. A branching beam produced by the half mirror 10 is used as a reference. The branching beam and the beam transmitted through the capillary 4 are received by a receiver 5 and processed at a signal processor 6, from which the results of processing are then output. A diaphragm 3 for controlling the solid angle of the beam incident on the capillary is combined with the condensing lens 9. The beam incident on the capillary 4 is allowed to pass through only a space where a sample at the center of the capillary passes, while the beam received by the receiver without passing through the space where the sample passes is blocked. |
