SPECTROPHOTOMETRIC DETERMINATION OF MICROQUANTITIES OF SILVER(I) USING DITHIZONE IN THE PRESENCE OF CETYL TRIMETHYLAMMONIUM BROMIDE

被引:0
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作者
SHAH, R [1 ]
DEVI, S [1 ]
机构
[1] MAHARAJA SAYAJIRAO UNIV BARODA, FAC SCI, DEPT CHEM, BARODA 390002, GUJARAT, INDIA
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中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The spectrophotometric determination of silver (I) as its dithizonate has been carried out in the micellar medium, cetyl trimethylammonium. bromide (CTAB). Both ligand and the complex were soluble in water in the presence of the surfactant. The molar absorptivity of the complex at lambda(max) 565 nm was found to be 5.5 x 10(4) 1 mol(-1) cm(-1), with stoichiometry of 1:1. Beer's law is obeyed up to 1.0 ppm. The method has been used for the estimation of silver in pharmaceutical ointment and in the waste water of photographic film developing laboratory.
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页码:925 / 927
页数:3
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