Compact electrochemical sensor system and method for field testing for metals in saliva or other fluids
US6699384B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2000 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Mar 10, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0439
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Microanalytical systems based on a microfluidics/electrochemical detection scheme are described. Individual modules, such as microfabricated piezoelectrically actuated pumps and a microelectrochemical cell were integrated onto portable platforms. This allowed rapid change-out and repair of individual components by incorporating “plug and play” concepts now standard in PC's. Different integration schemes were used for construction of the microanalytical systems based on microfluidics/electrochemical detection. In one scheme, all individual modules were integrated in the surface of the standard microfluidic platform based on a plug-and-play design. Microelectrochemical flow cell which integrated three electrodes based on a wall-jet design was fabricated on polymer substrate. The microelectrochemical flow cell was then plugged directly into the microfluidic platform. Another integration scheme was based on a multilayer lamination method utilizing stacking modules with different functionality to achieve a compact microanalytical device. Application of the microanalytical system for detection of lead in, for example, river water and saliva samples using stripping voltammetry…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.