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Spectrophotometric determination of zinc with thiocyanate and rhodamine 6G
Date Issued
01-01-1980
Author(s)
Prasada Rao, T.
Ramakrishna, T. V.
Abstract
A sensitive and selective method is described for the spectrophotometric determination of zinc. The method is based on the reaction of Rhodamine 6G with the tetrathiocyanatozincate(II) anion to form a pink product that is stabilised by gelatin. The colour development is rapid and remains stable for at least 3 h. Zinc contents as low as 0.2-5.0 μg in 10 ml of sample can be readily determined. The method is precise and has been applied to the determination of zinc in synthetic matrices and soil samples.
Volume
105