. "C\u00EDlem pr\u00E1ce bylo zav\u00E9st a optimalizovat metodu stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F pomoc\u00ED square-wave voltametrie s pou\u017Eit\u00EDm s\u00EDtotiskov\u00FDch senzor\u016F s uhl\u00EDkovou pracovn\u00ED elektrodou. Byly nalezeny tyto optim\u00E1ln\u00ED parametry metody: potenci\u00E1lov\u00FD krok a amplituda 5 mV, frekvence 1 Hz. Pro ov\u011B\u0159en\u00ED linearity a sensitivity metody byly pou\u017Eity standardn\u00ED antioxidanty askorbov\u00E1 kyselina, trolox, N-acetylcystein a melatonin. Limity detekce byly 0,09 mmol/l pro askorbovou kyselinu, 0,04 mmol/l pro melatonin, 0,03 mmol/l pro trolox a 0,07 mmol/l pro N-acetylcystein. Na senzory bylo aplikov\u00E1no 20 ul vzorku. Pomoc\u00ED standardn\u00EDho testu FRAP bylo provedeno ov\u011B\u0159en\u00ED, zda je metoda vhodn\u00E1 pro stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru. Ob\u011B metody spolu dob\u0159e korelovaly (korela\u010Dn\u00ED koeficient 0,9778)." . . "RIV/60162694:G44__/14:43875208!RIV15-MO0-G44_____" . "Electrochemical determination of low-molecular-weight antioxidants in blood serum"@en . . . "Electrochemical determination of low-molecular-weight antioxidants in blood serum"@en . "RIV/60162694:G44__/14:43875208" . . "Chemick\u00E9 listy" . "The aim of the study was to establish and optimize an electrochemical method for the assay of low-molecularweight antioxidants (LMWA). We used square-wave voltammetry at 0-1.1 V) on screen-printed sensors with C working electrodes. Optimum parameters were: potential step and amplitude 5 mV and frequency 1 Hz. Ascorbic acid, trolox, N-acetylcysteine and melatonin were used as standard antioxidants to test the linearity and sensitivity of the method. Limits of detection were 0.09 mmol l-1 for ascorbic acid, 0.04 mmol l-1 for melatonin, 0.03 mmol l-1 for trolox, and 0.07 mmol l-1 for N-acetylcysteine. 20 ul samples were used. The suitability of the method for the assay was confirmed by the standard ferric reducing ability of plasma test. Both methods correlated well (correlation coefficient 0.9778)."@en . . "Elektrochemick\u00E9 stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru" . "Pohanka, Miroslav" . "http://www.chemicke-listy.cz/docs/full/2014_01_64-69.pdf" . "G44" . "Elektrochemick\u00E9 stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru" . "1" . "I, S" . . "Elektrochemick\u00E9 stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru"@cs . "[143CF2B662EA]" . "0009-2770" . . "Kra\u010Dmarov\u00E1, Al\u017Eb\u011Bta" . . . "000331796000011" . . "6"^^ . "CZ - \u010Cesk\u00E1 republika" . . "2"^^ . "Elektrochemick\u00E9 stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru"@cs . . . "2"^^ . "C\u00EDlem pr\u00E1ce bylo zav\u00E9st a optimalizovat metodu stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F pomoc\u00ED square-wave voltametrie s pou\u017Eit\u00EDm s\u00EDtotiskov\u00FDch senzor\u016F s uhl\u00EDkovou pracovn\u00ED elektrodou. Byly nalezeny tyto optim\u00E1ln\u00ED parametry metody: potenci\u00E1lov\u00FD krok a amplituda 5 mV, frekvence 1 Hz. Pro ov\u011B\u0159en\u00ED linearity a sensitivity metody byly pou\u017Eity standardn\u00ED antioxidanty askorbov\u00E1 kyselina, trolox, N-acetylcystein a melatonin. Limity detekce byly 0,09 mmol/l pro askorbovou kyselinu, 0,04 mmol/l pro melatonin, 0,03 mmol/l pro trolox a 0,07 mmol/l pro N-acetylcystein. Na senzory bylo aplikov\u00E1no 20 ul vzorku. Pomoc\u00ED standardn\u00EDho testu FRAP bylo provedeno ov\u011B\u0159en\u00ED, zda je metoda vhodn\u00E1 pro stanoven\u00ED n\u00EDzkomolekul\u00E1rn\u00EDch antioxidant\u016F v s\u00E9ru. Ob\u011B metody spolu dob\u0159e korelovaly (korela\u010Dn\u00ED koeficient 0,9778)."@cs . . . "108" . "14252" . . . "ascorbic acid; screen-printed electrode; plasma; antioxidant; electrochemistry"@en .