| 摘要 |
A stop-flow method and apparatus for measuring radioactivity in a liquid chromatographic eluate in which flow is stopped and resumed so that radioactivity of desired portions of the eluate can be measured accurately in a stationary manner. The sample is passed through a chromatographic column (10) to a radioactivity detector (17) via valve (47) under the control of controller (35). The valve (47) is closed in response to signals from a timer, the radioactivity detector (17) or other detector (12) to stop eluate flow and permit stationary measurement. In a second embodiment, eluate fractions may be stored in a capillary storage device prior to passage to the radioactivity detector (17) for stationary measurement. |
