Contaminant detection device and method
US10684249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2015 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Dec 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/1813
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring pH levels and contaminant concentration includes an electrode assembly that is electrically coupled to a control unit. The electrode assembly includes a first contact electrically coupled to a reference electrode, a second contact electrically coupled to a working electrode, and a third contact electrically coupled to a counter electrode. The working electrode may be modified to include a cysteine functionalized graphene oxide with polypyrrole nanocomposite. In operation, the control unit may apply a complex signal to the working electrode via the second contact in order to adhere and subsequently strip contaminant ions from the fluid sample to the working electrode. During this process, a current may be measured across the working electrode and the counter electrode to measure contaminant ion concentration. The pH of the fluid sample may also be determined by a current measured across the reference electrode and the counter electrode. In some examples, the pH may be used to calibrate the measured levels of the contaminant ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.