Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method
Samo za registrovane korisnike
1998
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A kinetic method for the determination of selenium(IV) traces is proposed, based on its inhibitory action on the oxidation of Nile Blue A by hydrogen peroxide in phosphate buffer (pH 10.5). A linear dependence was established between the rate of the proposed indicator reaction and selenium concentration in the range 9.5 x 10(-2)-1.58 ng cm(-3). The experimental conditions of maximal selenium effect were established. Selenium, determined by the tangent method, was determined at concentrations over the range 0.22-1.26 ng cm(-3), with relative standard deviations up to 4.5%. The reaction rate was followed spectrophotometrically. The effect of foreign ions on the accuracy of this method was also investigated. The method was applied to the determination of selenium in pharmaceutical preparations and wheat flour.
Izvor:
Mikrochimica Acta, 1998, 128, 1-2, 43-48Izdavač:
- Springer-Verlag Wien, Vienna
DOI: 10.1007/BF01242188
ISSN: 0026-3672
WoS: 000071090900005
Scopus: 2-s2.0-0002287058
Institucija/grupa
PharmacyTY - JOUR AU - Milovanović, Gordana AU - Petronijević, Radivoj AU - Čakar, Mira PY - 1998 UR - https://farfar.pharmacy.bg.ac.rs/handle/123456789/177 AB - A kinetic method for the determination of selenium(IV) traces is proposed, based on its inhibitory action on the oxidation of Nile Blue A by hydrogen peroxide in phosphate buffer (pH 10.5). A linear dependence was established between the rate of the proposed indicator reaction and selenium concentration in the range 9.5 x 10(-2)-1.58 ng cm(-3). The experimental conditions of maximal selenium effect were established. Selenium, determined by the tangent method, was determined at concentrations over the range 0.22-1.26 ng cm(-3), with relative standard deviations up to 4.5%. The reaction rate was followed spectrophotometrically. The effect of foreign ions on the accuracy of this method was also investigated. The method was applied to the determination of selenium in pharmaceutical preparations and wheat flour. PB - Springer-Verlag Wien, Vienna T2 - Mikrochimica Acta T1 - Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method VL - 128 IS - 1-2 SP - 43 EP - 48 DO - 10.1007/BF01242188 ER -
@article{ author = "Milovanović, Gordana and Petronijević, Radivoj and Čakar, Mira", year = "1998", abstract = "A kinetic method for the determination of selenium(IV) traces is proposed, based on its inhibitory action on the oxidation of Nile Blue A by hydrogen peroxide in phosphate buffer (pH 10.5). A linear dependence was established between the rate of the proposed indicator reaction and selenium concentration in the range 9.5 x 10(-2)-1.58 ng cm(-3). The experimental conditions of maximal selenium effect were established. Selenium, determined by the tangent method, was determined at concentrations over the range 0.22-1.26 ng cm(-3), with relative standard deviations up to 4.5%. The reaction rate was followed spectrophotometrically. The effect of foreign ions on the accuracy of this method was also investigated. The method was applied to the determination of selenium in pharmaceutical preparations and wheat flour.", publisher = "Springer-Verlag Wien, Vienna", journal = "Mikrochimica Acta", title = "Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method", volume = "128", number = "1-2", pages = "43-48", doi = "10.1007/BF01242188" }
Milovanović, G., Petronijević, R.,& Čakar, M.. (1998). Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method. in Mikrochimica Acta Springer-Verlag Wien, Vienna., 128(1-2), 43-48. https://doi.org/10.1007/BF01242188
Milovanović G, Petronijević R, Čakar M. Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method. in Mikrochimica Acta. 1998;128(1-2):43-48. doi:10.1007/BF01242188 .
Milovanović, Gordana, Petronijević, Radivoj, Čakar, Mira, "Kinetic determination of trace levels of selenium(IV) and total selenium by Nile Blue A hydrogen peroxide method" in Mikrochimica Acta, 128, no. 1-2 (1998):43-48, https://doi.org/10.1007/BF01242188 . .