2003•Journal of Science of Teachers' College and UniversityRequires access

Study on the color system of Zn(II)-SCN-Rhodamine B

Gao Lidi

Abstract

A spectrophotometric method has been developed for determination of zinc,based on the formation of a complicated complex of Zn(Ⅱ)-SCN-Rhodamine B in the presence of gecation and OP .Beers law is obeyed for in the rang of 0 to 5.0μg of Zn(Ⅱ) per 25mL of sulution .The apparent molar absorptivity is 1.3×10 4L·mol -1 ·cm -1 at 590 nm .This is method has been applied to the determination of trace amount of Zinc in salt with satistory results.

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Key concepts: Molar absorptivity, Rhodamine B, Zinc, Chemistry, Salt (chemistry), Spectrophotometry, Rhodamine, TRACE (psycholinguistics)