| 摘要 |
PURPOSE:To analyze microscopically and exactly the concn. of the ions contained in a slight amt. of sample by constituting small a flow passage for a sample soln. CONSTITUTION:Conductive patterns 2-4 consisting of a metallic film and a sensitive film on said conductive film are provided on the surface of an insulating substrate 1. The patterns 2-4 are so constituted that the forked parts 6 thereof are positioned above the flow passage 5. The forked parts 6 are joined to metallic pins 8 embedded into the substrate 1 by a pattern 7 consisting of the metallic film. One of the patterns 2-4, for example, 4 is a reference electrode and the ion sensitive film for detecting the respectively different ions are coated on the other patterns 2, 3. The flow passage 5 is formed into a flat shape for the ease of production of the parts 6 in the flow passage and is provided with a flow passage groove to an electrode cap to be put on an electrode. The cap and the substrate 1 are sealed to prevent the leakage of the sample soln. The passage 5 has no rugged parts and is therefore free from clogging within the same. The formation of the passage 5 to the smaller diameter is thus made possible and the concn. of plural kinds of the ions in the slight amt. of the sample soln. is thus exactly measured. |
