发明名称 |
ELECTROCHEMICAL SENSOR SYSTEM AND SENSING METHOD |
摘要 |
A sensor system and method for measuring the concentration, or indicating the presence or presence at a predetermined level of, a target contaminant species in an aqueous medium are described. The system is based upon a sensor element (1) having a sample receiving area (2) for receiving a sample of aqueous medium to be sampled and which comprises at least three electrodes (5, 6, 7) each comprising a layer of conductor deposited upon an insulating substrate. The system also includes a power source (13) to apply a pre-determined potential difference across two of the electrodes determined by the potential associated with an electrochemical reaction characteristic of the target species, eg. Ammonia NH3, and output means (19) to output data corresponding to the current generated thereby when a sample is in place on the sampling area. In a preferred embodiment, differential pulsed square wave voltammetry is used. |
申请公布号 |
WO03087802(A3) |
申请公布日期 |
2004.10.07 |
申请号 |
WO2003GB01383 |
申请日期 |
2003.03.28 |
申请人 |
ELECTROCHEMICAL SENSOR TECHNOLOGY LIMITED;DOBSON, JOHN, VINCENT;MARSHALL, ROBERT, NEIL |
发明人 |
DOBSON, JOHN, VINCENT;MARSHALL, ROBERT, NEIL |
分类号 |
G01N27/403;G01N27/49 |
主分类号 |
G01N27/403 |
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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