| 摘要 |
PURPOSE:To shorten the scanning time without lowering the accuracy of quantitative analysis, by automatically limiting a range performing highly accurate final scanning by rough scanning. CONSTITUTION:A specimen 3 such as a thin layer chromatography plate or an electrophoretic gel is held on a specimen stage 3 movable to both X- and Y-directions and irradiated with light from an optical system 2. The specimen stage 20 is controlled by a microcomputer MC12 through a drive mechanism and linear scanning being rough scanning and zigzag scanning being main scanning are performed. The reflected light from the specimen 3 is converted to an electric signal by a photomultiplier tube 4 and the transmitted light from the specimen 3 is converted to an electric signal by a photomultiplier tube 6 while both signals are amplified by an amplifier 8 and converted by an A/D converter 10 to be taken in MC12. MC12 detects the peak position at the time of rough scanning from the taken-in signal and the main scanning range performing zigzag scanning is limited only to a peak range containing a spot and data processing at the time of final scanning is performed to output the processed data to a printer 14 and CRT16. |
