| 摘要 |
PURPOSE:To increase the electrolytic current flowing in the electrolyzing means on a down stream side and to measure an analytical material in the state of a high concn. by immersing the electrolyzing means into a counter electrode liquid. CONSTITUTION:A housing 3 of the 1st electrolyzing means is provided to the introducing port 7 side of a flow passage 8 for the liquid to be detected and a housing 4 of the 2nd electroyzing means is provided to the outlet 9 side thereof. The flow passages 8, 5 are communicated with each other to form the flow passage for the liquid to be detected. Electrolytic diaphragms 1a, 1b and current collectors 2a, 2b are provided in the housings 3, 4 and working electrodes 6a, 6b are packed in the flow passages 8, 5. the counter electrodes 13a, 13b are provided to the outside of th diaphragms 1a, 1b and are so positioned that the liquid junction of reference electrodes 12a, 12b are positioned there. The counter electrode liquid 11 is further filled into a container 15 in which the 1st, 2nd electrolyzing means are housed to immerse the respective electrolyzing means in the counter electrode liquid. the thickness of th diaphragm 1 is made larger than the thickness of the diaphragm 1b, by which the electric resistance between the working electrode 6, and the counter electrode 13a is made smaller than the electric resistance on the upper stream side. The large electrolytic current is thus acted to the electrolyzing means on the down stream side.
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