| 摘要 |
PURPOSE:To regularize a flux of a sample liquid led to an ionization chamber by connecting a splitter to a leading-in tube to lead the sample liquid into the ionization chamber, and supplying a gas under fixed pressure into an exhaust flow passage of residual sample liquid taken out of the ionization chamber. CONSTITUTION:A sample liquid is led from a liquid choromatograph 1 into an ionization chamber 2, subjected to an electron bombardment with electrons from a filament 7 to generate a sample ion which is taken out from an exit 11. The sample liquid in a leading-in tube 3 is led through a porous member 4 and the residual sample liquid is exhausted through an exhaust tube 5 by connecting a splitter to the lead-in tube 3. Then, an airpipe 15 is connected to the exhaust tube 5 to supply a gas from a gas cylinder 16 through a regulated pressure valve 17. And the gas under a regulated pressure is mixed into the residual sample liquid. Thus, a stabilized flow of the sample liquid to be led into the ionization chamber can be maintained even when an outgoing flux of the sample liquid fluctuates.
|
