| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous solution analysis method and its apparatus capable of highly accurately detecting trace constituents by preventing detection peaks from being broad nor overlaid on noise elements in an aqueous solution analysis method by voltammetry. <P>SOLUTION: An working electrode made of an electrically conductive diamond electrode and a counter electrode to the working electrode are arranged in an aqueous solution. By measuring a current flowing between the working electrode and the counter electrode when the electric potential of the working electrode to a reference electrode is swept in the direction of positive potential and/or in the direction of negative potential, substances in the aqueous solution are detected in the aqueous solution analysis method. When the electric potential of the working electrode is to be swept in the direction of positive potential and/or in the direction of negative potential, organic compounds are previously decomposed by oxidization at a potential capable of causing oxidative decomposition reaction of the organic compounds. <P>COPYRIGHT: (C)2007,JPO&INPIT |
