Trace element measuring system using red mercury electrode

摘要

The present invention simplifies the flow path by using a plurality of switch valves and at the same time, by measuring and supplying the correct amount of electrolyte, sample and sample solution to the cell using a precision injector, quantitative qualitative determination of trace elements even without professional personnel The present invention relates to a trace element measuring system using a dropping mercury electrode capable of accurately performing an analysis. The trace element measuring system includes a reference electrode 16, an auxiliary electrode 18, and a capillary tube 30 on which mercury is deposited. Operation of the first switch valve 40 and the first motor 66 to selectively supply mercury flowing from the mercury storage container 50 through the supply pipe 54 to the capillary 30. A first precision injector 60 for supplying mercury sucked through the first pipe line 46 mounted on the first switch valve 40 to the capillary tube 30, the pure water container 100, and the electrolyte container 102. ) And the liquid contained in the sample 104 The second switch valve 120 to the second precision injector 220 through the line 124, and the third switch for supplying the liquid supplied through the second switch valve 120 to the second line (L2) The valve 130 and the liquid supplied through the second line L2 are supplied to the cell 12, or the nitrogen gas supplied from the nitrogen gas cylinder 160 is supplied to the recovery vessel 178 through the eighth line L8. The fourth switch valve 140 and the fifth switch valve 150 for supplying the standard sample contained in the standard sample container 180 to the third precision injector 230 through the fifth line (L5). .