发明名称 |
METHOD AND APPARATUS FOR MEASURING SIMULTANEOUSLY CONCENTRATIONS OF DISSOLVED GAS |
摘要 |
Two dissolved gas components in sample water, for example, oxygen and hydrogen in core water, are readily quantitatively determined in one and same membrane-type oxygen meter by using a membrane producing an overlapped potential region where a potential region for an oxidation limiting current plateau is overlapped with that for a reduction limiting current plateau between two dissolved gas components, and applying to between a pair of an electrode and a counter-electrode a more positive potential than the equilibrium potential for oxidation-reduction reaction of one of the two dissolved gas components principally, thereby measuring a current generated between the electrodes, and a more negative potential than the equilibrium potential for oxidation-reduction reaction of the other dissolved gas component, when desired, thereby measuring a current generated between the electrodes, and quantitatively determining a concentration of the first dissolved gas component from the latter current quantity and quantitatively determining a concentration of the other dissolved gas component from a difference between the said two current quantities. |
申请公布号 |
DE3473176(D1) |
申请公布日期 |
1988.09.08 |
申请号 |
DE19843473176 |
申请日期 |
1984.03.23 |
申请人 |
HITACHI, LTD.;HITACHI ENGINEERING CO., LTD. |
发明人 |
KITAMURA, MASAO;NAKAYAMA, NORIO;KATSURA, RYOEI;IBE, HIDEFUMI;UCHIDA, SHUNSUKE |
分类号 |
G01N27/404;G01N27/416;G01N27/49;(IPC1-7):G01N27/46 |
主分类号 |
G01N27/404 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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