Flotation-spectrophotometric determination of vanadium with 3,5-dinitrocatechol and Rhodamine B.
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چکیده
منابع مشابه
Determination of thallium(I) by flotation-spectrophotometric method using iodide and rhodamine B.
A method for the trace amount determination of Tl(I), via its preconcentration, is proposed. The method is based on the reaction of iodide, Tl(I) and Rhodamine B in a weakly acidic medium. In this process an ion-associated complex is formed, which is floated at the interface of aqueous-cyclohexane layers. Various amounts of Tl(I) by a subsequent separation and dissolution of the floated complex...
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1-(2-Hydroxy-4-methoxybenzophenone)-4-phenylthiosemicarbazone (HMBPT) was investigated as a new reagent for the flotation of vanadium(IV). At pH approximately 1.5, vanadium(IV) forms a 1:1 pale-violet complex with HMBPT in aqueous solution. An intense clear violet layer was formed after flotation, by adding an oleic acid (HOL) surfactant. The composition of the float was 1:1 [V(IV)]:[HMBPT]. A ...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1988
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.4.629