Abstract
In this paper the method of co-precipitating ⩾ 10 μg of Sn(IV) with Be(II) from an ammoniacal medium is made highly selective by incorporating a ternary masking system: (a) NH2OH-NTA-EDTA or (b) H2O2-NTA-EDTA. It serves to preconcentrate Sn(IV) from a number of ionic species, especially from Nb(V), Ta(V) and Ti(IV) in mg or even cg amounts. System (a) is also effective for masking Th(IV) and U(IV), and (b) for Sb(III), Sb(V) and Ge(IV). Hence the two systems are complementary.
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Zhou, N. A new method for selective preconcentration of tin. Mikrochim Acta 108, 303–309 (1992). https://doi.org/10.1007/BF01242441
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DOI: https://doi.org/10.1007/BF01242441