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Ion chromatography on-chip
Citation
Murrihy, JP and Breadmore, MC and Tan, A and McEnery, M and Alderman, J and O'Mathuna, C and O'Neill, AP and O'Brien, P and Advoldvic, N and Haddad, PR and Glennon, JD, Ion chromatography on-chip, Journal of Chromatography A, 924, (1-2) pp. 233-238. ISSN 0021-9673 (2001) [Refereed Article]
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DOI: doi:10.1016/S0021-9673(01)00855-X
Abstract
On-chip separation of inorganic anions by ion-exchange chromatography was realized. Micro separation channels were fabricated on a silicon wafer and sealed with a Pyrex cover plate using standard photolithography, wet and dry chemical etching, and anodic bonding techniques. Quaternary ammonium latex particles were employed for the first time to coat the separation channels on-chip. Owing to the narrow depths of the channels on the chip, 0.5–10 μm, there were more interactions of the analytes with the stationary phase on the chip than in a 50-μm I.D. capillary. With off-chip injection (20 nl) and UV detection, NO2−, NO3−, I−, and thiourea were separated using 1 mM KCl as the eluent. The linear ranges for NO2− and NO3− are from 5 to 1000 μM with the detection limits of 0.5 μM.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | chip technology, instrumentation, latex nanoparticles, microseparation |
| Research Division: | Chemical Sciences |
| Research Group: | Analytical Chemistry |
| Research Field: | Separation Science |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in the Chemical Sciences |
| Author: | Breadmore, MC (Professor Michael Breadmore) |
| Author: | Haddad, PR (Professor Paul Haddad) |
| ID Code: | 22202 |
| Year Published: | 2001 |
| Web of Science® Times Cited: | 52 |
| Deposited By: | Chemistry |
| Deposited On: | 2001-08-01 |
| Last Modified: | 2012-11-06 |
| Downloads: | 0 |
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