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Determination of the carboxylic acids in acidic and basic process samples by capillary zone electrophoresis.
J Chromatogr A. 2010 Feb 19; 1217(8):1407-13.JC

Abstract

Capillary zone electrophoresis (CZE) with indirect UV detection was used in developing a method for the simultaneous determination of inorganic anions, aliphatic and heterocyclic organic acids in various processed samples. The analytes were determined simultaneously in 10 min using an electrolyte containing 20mM 2,3-pyrazine dicarboxylic acid, 65mM tricine, 2mM BaCl(2), 0.5mM cetyltrimethylammonium bromide, and 2M urea at pH 8.06. Linear plots for the analytes were obtained in the concentration range of 2-150 mg L(-1). Relative standard deviations (RSDs) of peak areas during a 3-day analysis period varied from 5.5% for glycolate to 9.5% for oxalate. RSDs of migration times varied between 0.4% and 1.1%. The detection limit (at S/N 3) was 1 mg L(-1) for all the analytes studied. The proposed method was successfully demonstrated for the determination of carboxylic acids in eight oxygen treated samples of commercial softwood and hardwood kraft lignin and two red wine samples of Pinot Noir grapes. In the kraft lignin samples the concentrations of carboxylic acids correspond to the oxidation time. The acid concentrations of wine varied considerable.

Authors+Show Affiliations

Technical Research Centre of Finland, VTT, FI-02044 VTT, Finland.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20034630

Citation

Rovio, Stella, et al. "Determination of the Carboxylic Acids in Acidic and Basic Process Samples By Capillary Zone Electrophoresis." Journal of Chromatography. A, vol. 1217, no. 8, 2010, pp. 1407-13.
Rovio S, Kalliola A, Sirén H, et al. Determination of the carboxylic acids in acidic and basic process samples by capillary zone electrophoresis. J Chromatogr A. 2010;1217(8):1407-13.
Rovio, S., Kalliola, A., Sirén, H., & Tamminen, T. (2010). Determination of the carboxylic acids in acidic and basic process samples by capillary zone electrophoresis. Journal of Chromatography. A, 1217(8), 1407-13. https://doi.org/10.1016/j.chroma.2009.12.032
Rovio S, et al. Determination of the Carboxylic Acids in Acidic and Basic Process Samples By Capillary Zone Electrophoresis. J Chromatogr A. 2010 Feb 19;1217(8):1407-13. PubMed PMID: 20034630.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of the carboxylic acids in acidic and basic process samples by capillary zone electrophoresis. AU - Rovio,Stella, AU - Kalliola,Anna, AU - Sirén,Heli, AU - Tamminen,Tarja, Y1 - 2009/12/16/ PY - 2009/10/27/received PY - 2009/12/04/revised PY - 2009/12/09/accepted PY - 2009/12/26/entrez PY - 2009/12/26/pubmed PY - 2010/4/14/medline SP - 1407 EP - 13 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1217 IS - 8 N2 - Capillary zone electrophoresis (CZE) with indirect UV detection was used in developing a method for the simultaneous determination of inorganic anions, aliphatic and heterocyclic organic acids in various processed samples. The analytes were determined simultaneously in 10 min using an electrolyte containing 20mM 2,3-pyrazine dicarboxylic acid, 65mM tricine, 2mM BaCl(2), 0.5mM cetyltrimethylammonium bromide, and 2M urea at pH 8.06. Linear plots for the analytes were obtained in the concentration range of 2-150 mg L(-1). Relative standard deviations (RSDs) of peak areas during a 3-day analysis period varied from 5.5% for glycolate to 9.5% for oxalate. RSDs of migration times varied between 0.4% and 1.1%. The detection limit (at S/N 3) was 1 mg L(-1) for all the analytes studied. The proposed method was successfully demonstrated for the determination of carboxylic acids in eight oxygen treated samples of commercial softwood and hardwood kraft lignin and two red wine samples of Pinot Noir grapes. In the kraft lignin samples the concentrations of carboxylic acids correspond to the oxidation time. The acid concentrations of wine varied considerable. SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/20034630/Determination_of_the_carboxylic_acids_in_acidic_and_basic_process_samples_by_capillary_zone_electrophoresis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(09)01819-6 DB - PRIME DP - Unbound Medicine ER -