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2013 | 11 | 11 | 1852-1859
Tytuł artykułu

Extractants selection for hyphenated electrothermal atomic absorption method

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The theoretical approach for extractants selection during hyphenated atomic absorption determination of highly volatile metals (Pb, Cd), hydride- (Sb, Bi) and carbide-forming (Cr) metals using thermodynamic modelling was proposed. The calculated parameter - maximum pyrolysis temperature - can be used for selection of the extractants and chemical modifiers. Using this approach the antimony extract with Brilliant green was modified for which the 1.8-fold sensitivity and 2.6-fold repeatability decreasing while extract sampling in graphite furnace was observed. A chemical modifier - mixture of hydrazine nitrate with the palladium(II) complex with Xylenol orange - was theoretically selected and experimentally tested, which allowed to enhance the maximum pyrolysis temperature on 200°C, to eliminate extract matrix influence. Using this modifier two-fold increasing in sensitivity and 3-fold decreasing in relative standard deviation was achieved while extraction atomic absorption determination. [...]
Wydawca

Czasopismo
Rocznik
Tom
11
Numer
11
Strony
1852-1859
Opis fizyczny
Daty
wydano
2013-11-01
online
2013-08-25
Twórcy
  • Faculty of Chemistry, The Donetsk National University, 83000, Donetsk, Ukraine, pupyshev@dpt.ustu.ru
  • Faculty of Chemistry, The Donetsk National University, 83000, Donetsk, Ukraine
  • Faculty of Chemistry, The Ural Federal University, 620002, Ekaterinburg, Russia
Bibliografia
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  • [15] GOST 668.15-92 (Izdatel’stvo standartov, Moskow, 1992) (In Russian)
  • [16] Pat. № 3896, MPK 7 G01N33/20. 15.12.2004 (In Ukrainian)
  • [17] GOST 4212-76 (Izdatel’stvo standartov, Moskow, 1987) (In Russian)
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-013-0317-1
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