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In-capillary derivatization and analysis of amino acids, amino phosphonic acid-herbicides and biogenic amines by capillary electrophoresis with laser-induced fluorescence detection.
Electrophoresis. 2002 Jul; 23(14):2333-40.E

Abstract

This paper describes a general approach for the in-capillary derivatization of amino compounds and the subsequent sensitive determination of the derivatives by micellar electrokinetic chromatography (MEKC) or capillary zone electrophoresis (CZE) with laser-induced fluorescence (LIF) detection. Amino acids, biogenic amines and amino phosphonic acid-herbicides were chosen as model analytes to evaluate the analytical potential of this approach. Fulfilment of the in-capillary reaction of the analytes using LIF detection hinged on the excellent labeling chemistry of 5-(4,6-dichloro-s-triazin-2-ylamino)fluorescein (DTAF) and the good resolution achieved in the separation of derivatized analytes. Careful optimization of the electrophoretic conditions in the mixing step of this protocol allowed the determination of amino acids, biogenic amines and phosphorus-containing amino acid-herbicides with concentration limits of detection at the nug/L level and relative standard deviations from 3.5 to 5.8%. The whole analysis is carried out within 20 min, resulting in a very simple, fast and practical approach for the fully automated analysis of amino acids and related compounds in low-volume and low-concentration samples.

Authors+Show Affiliations

Department of Analytical Chemistry, Edificio Marie Curie (Anexo), Campus de Rabanales, University of Córdoba, Córdoba, Spain.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12210240

Citation

Molina, Manuel, and Manuel Silva. "In-capillary Derivatization and Analysis of Amino Acids, Amino Phosphonic Acid-herbicides and Biogenic Amines By Capillary Electrophoresis With Laser-induced Fluorescence Detection." Electrophoresis, vol. 23, no. 14, 2002, pp. 2333-40.
Molina M, Silva M. In-capillary derivatization and analysis of amino acids, amino phosphonic acid-herbicides and biogenic amines by capillary electrophoresis with laser-induced fluorescence detection. Electrophoresis. 2002;23(14):2333-40.
Molina, M., & Silva, M. (2002). In-capillary derivatization and analysis of amino acids, amino phosphonic acid-herbicides and biogenic amines by capillary electrophoresis with laser-induced fluorescence detection. Electrophoresis, 23(14), 2333-40.
Molina M, Silva M. In-capillary Derivatization and Analysis of Amino Acids, Amino Phosphonic Acid-herbicides and Biogenic Amines By Capillary Electrophoresis With Laser-induced Fluorescence Detection. Electrophoresis. 2002;23(14):2333-40. PubMed PMID: 12210240.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In-capillary derivatization and analysis of amino acids, amino phosphonic acid-herbicides and biogenic amines by capillary electrophoresis with laser-induced fluorescence detection. AU - Molina,Manuel, AU - Silva,Manuel, PY - 2002/9/5/pubmed PY - 2003/7/30/medline PY - 2002/9/5/entrez SP - 2333 EP - 40 JF - Electrophoresis JO - Electrophoresis VL - 23 IS - 14 N2 - This paper describes a general approach for the in-capillary derivatization of amino compounds and the subsequent sensitive determination of the derivatives by micellar electrokinetic chromatography (MEKC) or capillary zone electrophoresis (CZE) with laser-induced fluorescence (LIF) detection. Amino acids, biogenic amines and amino phosphonic acid-herbicides were chosen as model analytes to evaluate the analytical potential of this approach. Fulfilment of the in-capillary reaction of the analytes using LIF detection hinged on the excellent labeling chemistry of 5-(4,6-dichloro-s-triazin-2-ylamino)fluorescein (DTAF) and the good resolution achieved in the separation of derivatized analytes. Careful optimization of the electrophoretic conditions in the mixing step of this protocol allowed the determination of amino acids, biogenic amines and phosphorus-containing amino acid-herbicides with concentration limits of detection at the nug/L level and relative standard deviations from 3.5 to 5.8%. The whole analysis is carried out within 20 min, resulting in a very simple, fast and practical approach for the fully automated analysis of amino acids and related compounds in low-volume and low-concentration samples. SN - 0173-0835 UR - https://www.unboundmedicine.com/medline/citation/12210240/In_capillary_derivatization_and_analysis_of_amino_acids_amino_phosphonic_acid_herbicides_and_biogenic_amines_by_capillary_electrophoresis_with_laser_induced_fluorescence_detection_ DB - PRIME DP - Unbound Medicine ER -