Metal Ion Analysis Using Near-Infrared Dyes and the ''Laboratory-on-a-Chip''
The primary research objective of this effort is to develop a portable, capillary electrophoresis microchip capable of sensitively and rapidly monitoring hazardous waste metal ions critical to the successful deactivation and decommissioning (D&D) of contaminated equipment and structures at various DOE sites. Hazardous waste metal ions to be adapted for sensing on the microchip include UO{sub 2}{sup 2+}, Be{sup 2+}, Cr{sup 6+}, Hg{sup 2+}, Pb{sup 2+}, Co{sup 2+}, Ni{sup 2+}, Cs{sup +}, and Sr{sup 2+}. Particular emphasis will be placed on developing viable, new extraction methods for metal ion sampling from both the air via a microimpinger which is integrated onto the microchip itself, and from contaminated surfaces, both techniques being amenable to on-line introduction onto the microchip. Two different detection methods for monitoring the electrophoretic separations taking place down the microchannel will be exploited in this research, indirect and direct detection. Special emphasis will be placed on maintaining the ultimate portability of the final microchip device through the careful selection of metallochromic dyes and fluorophores which are amenable to use of small, inexpensive light sources (e.g., LED's) and photodetectors.
- Research Organization:
- Naval Research Laboratory, Washington, DC; Nova Research, Inc., Alexandra, VA (US)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM) (US)
- DOE Contract Number:
- FG07-01ER62711
- OSTI ID:
- 835364
- Report Number(s):
- EMSP-82749-2002; R&D Project: EMSP 82749; TRN: US200501%%101
- Resource Relation:
- Other Information: PBD: 19 Jun 2002
- Country of Publication:
- United States
- Language:
- English
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Metal Ion Analysis Using Near-Infrared Dyes and the Laboratory-on-a-Chip
METAL ION ANALYSIS USING NEAR-INFRARED DYES AND THE ''LABORATORY-ON-A-CHIP''