Colloidal-gold electrosensor measuring device
The present invention provides a new device for use in measuring lead levels in biological and environmental samples. Using square wave coulometry and colloidal gold particles impregnated on carbon electrodes, the present invention provides a rapid, reliable, portable and inexpensive means of detecting low lead levels. The colloidal gold modified electrodes have microelectrode array characteristics and produce significantly higher stripping detection signals for lead than are produced at bulk gold electrode surfaces. The method is effective in determining levels of lead down to at least 5 {micro}g/dL in blood samples as small as 10 {micro}L. 9 figs.
- Issue Date:
- OSTI Identifier:
- 131930
- Assignee:
- Andcare, Inc., Durham, NC (United States) PTO; SCA: 540220; 560300; PA: EDB-95:158334; SN: 95001489051
- Patent Number(s):
- US 5,468,366/A/
- Application Number:
- PAN: 8-316,433
- Contract Number:
- FG05-94ER81657
- Resource Relation:
- Other Information: PBD: 21 Nov 1995
- Research Org:
- ANDCARE Inc
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; LEAD; MEASURING METHODS; MEASURING INSTRUMENTS; DESIGN; BIOLOGICAL MATERIALS; ECOLOGICAL CONCENTRATION; PORTABLE EQUIPMENT; COLLOIDS; BIOLOGICAL ACCUMULATION