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Exceeding 5000-Fold Concentration of Dilute Analytes in Micellar Electrokinetic Chromatography
Abstract
When a neutral analyte zone is injected into a charged pseudostationary phase, the length of the zone is predicted to be narrowed by 1/(1 + k ), where k is the retention factor. The conditions for zone narrowing to occur assume negligible electroosmotic flow, a relatively constant electric field along the capillary column, and no pseudostationary phase in the injected analyte mixture. The theoretically expected concentration enhancement was demonstrated experimentally. Consequently, the detection sensitivity of analytes in micellar electrokinetic chromatography (MEKC) can be improved significantly. For example, 9 to 18 parts per billion of an environmentally important racemic herbicide spiked in lake water was separated by MEKC and detected by ultraviolet absorption.
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Citations
Cited by
Chen, Y., Guo, Z., Wang, X., & Qiu, C. (2008) · Journal of Chromatography A · doi:10.1016/j.chroma.2007.10.026 · Cited by 316
Wang, C., Li, C., Zang, X., Han, D., Liu, Z., & Wang, Z. (2007) · Journal of Chromatography A · doi:10.1016/j.chroma.2007.01.027 · Cited by 56
Metadata
- Authors
- Quirino, J. P., & Terabe, S.
- Venue
- Science
- Published
- 1998-10-16
- Volume
- 282
- Issue
- 5388
- Pages
- 465-468
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2005086794
- Cited by
- 644
- References
- 0
- FWCI
- 26.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- Quirino, J. P., & Terabe, S. (1998). Exceeding 5000-Fold Concentration of Dilute Analytes in Micellar Electrokinetic Chromatography. Science. https://doi.org/10.1126/science.282.5388.465
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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