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Determination of ascorbic acid in human plasma with a view to stability using HPLC with UV detection

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F08%3A00007893" target="_blank" >RIV/00216275:25310/08:00007893 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determination of ascorbic acid in human plasma with a view to stability using HPLC with UV detection

  • Original language description

    A method for the measurement of ascorbic acid using HPLC with UV detection and investigation into the protein precipitation techniques with regard to stability and recovery are described. The effectiveness of various protein precipitants was tested. Stability of ascorbic acid samples for analysis was investigated over 10 h. Ascorbic acid samples extracted with metaphosphoric acid were stable on a cooled autosampler (4 °C) for at least 10 h (with a decline of 1.8% for ascorbic acid solution and 2.8% forplasma). Perchloric acid as protein precipitant for ascorbic acid was unsuitable (with a decline of 36.0% for ascorbic acid solution and 7.3% for plasma). Analytical performance of this method is satisfactory. The intra- and interassay coefficients of variation were 2.1% (n = 10) and 5.8% (n = 12), respectively. The calibration curve was linear with the tested range of 2.0?250.0 umol/L. The recovery was 96.1% with CV = 4.8% (n = 6) and the LOD was 3 umol/L. The preliminary reference rang

  • Czech name

    Stanovení kyseliny askorbové v lidské plazmě pomocí HPLC-UV s ohledem na stabilitu

  • Czech description

    Je zde popsána metoda stanovení kyseliny askorbové pomocí HPLC s UV detekcí, kde je kladen důraz na vhodnou precipitaci proteinů s ohledem na stabilitu a výtěžnost. Byla testována různá precipitační činidla. Byla zjišťována stabilita kyseliny askorbové ve vzorcích přes více jak 10 hodin. Při precipitaci pomocí kyseliny metafosforečné byla kyselina askorbová při 4 °C stabilní po dobu deseti hodin (s poklesem 1,8% pro standardní roztok a 2,8% pro plazmu). Kyselina chloristá byla jako precipitační činidlonevhodná (s poklesem 36,0% pro standardní roztok a 7,3% pro plazmu). Analytické parametry metody byly vyhovující. Koeficienty variace pro přesnost v sérii a mezi sériemi byly 2,1% (n = 10) a 5,8% (n = 12). Kalibrační křivka byla lineární v rozsahu 2,0 ?250,0 umol/l. Výtěžnost metody byla 96,1% s CV = 4,8% (n = 6) a LOD byla 3 umol/l. Referenční hodnoty se pohybovaly v rozmezí 50,8?22,4 umol/l. Prezentovaná metoda je vysoce citlivá a reprodukovatelná.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CE - Biochemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Separation Science

  • ISSN

    1615-9306

  • e-ISSN

  • Volume of the periodical

    31

  • Issue of the periodical within the volume

    20

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    6

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database