Flame atomic-absorption determination of beryllium after extraction from NH(4)SCN medium with trioctylamine in MIBK.
A study has been made of the experimental conditions, errors, sensitivity, limits of detection and linear response range in the determination of beryllium by AAS in a nitrous oxide-acetylene flame, with aqueous or aqueous organic solutions or MIBK solutions containing the ion-pair [Be(SCN)(2-)(4)][(R(3)NH)(2+)(2)]. The interference of Al, Mg, Ti, V, Fe, Ca, Mn, Na, K, SiO(2-)(3), PO(3-)(4), Cl(-), SO(2-)(4), F(-), ClO(-)(4), H(2)BO(-)(3) and SCN(-) has been studied, and methods established for eliminating that of titanium, aluminium, fluoride and silicon.
Castillo
J R
JR
Department of Analytical Chemistry, Science Faculty, University of Zaragoza, Zaragoza, Spain.
Belarra
M A
MA
Dominguez
M
M
Aznárez
J
J