TY - JOUR
T1 - Ion flotation of dichromate and of complexed cyanide
T2 - Surfactants for qualitative analysis
AU - Grieves, Robert B.
AU - Ghosal, Jitendra K.
AU - Bhattacharyya, Dibakar
PY - 1968/9
Y1 - 1968/9
N2 - Ion flotation studies have shown that a surface-active agent is useful for qualitative analysis of complex ions in dilute aqueous solution, with the surfactant forming a particulate complex with the complex ion of concern. Experiments with a monovalent, cationic surfactant have established the prevalence of Cr2O72- (HCrO4-) and not CrO42-; of [Fe(CN)6]4- and [Fe(CN)5H2O]3-; and of [FeFe(CN)6]2- and not [FeFe(CN)6]- or [Fe(CN)6]3-. The results can be contrasted to those with ions that do not form particulate complexes with the surfactant, such as HPO42- and phenolate; with the latter, no qualitative analytical information can be gained. Ion flotation appears to be a promising technique in general for the determination of ionic species present in aqueous solution; the surfactant must react with the ion of significance to form a particulate complex and the initial surfactant concentration must be controlled carefully.
AB - Ion flotation studies have shown that a surface-active agent is useful for qualitative analysis of complex ions in dilute aqueous solution, with the surfactant forming a particulate complex with the complex ion of concern. Experiments with a monovalent, cationic surfactant have established the prevalence of Cr2O72- (HCrO4-) and not CrO42-; of [Fe(CN)6]4- and [Fe(CN)5H2O]3-; and of [FeFe(CN)6]2- and not [FeFe(CN)6]- or [Fe(CN)6]3-. The results can be contrasted to those with ions that do not form particulate complexes with the surfactant, such as HPO42- and phenolate; with the latter, no qualitative analytical information can be gained. Ion flotation appears to be a promising technique in general for the determination of ionic species present in aqueous solution; the surfactant must react with the ion of significance to form a particulate complex and the initial surfactant concentration must be controlled carefully.
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U2 - 10.1007/BF02668957
DO - 10.1007/BF02668957
M3 - Article
AN - SCOPUS:51649179844
SN - 0003-021X
VL - 45
SP - 591
EP - 593
JO - Journal of the American Oil Chemists' Society
JF - Journal of the American Oil Chemists' Society
IS - 9
ER -