DETERMINATION OF SMALL AMOUNTS OF TIN WITH 4,5-DIHYDROXYFLUORESCEIN BY DIFFERENTIAL ABSORPTIOMETRY

被引：7

作者：

AMBUJAVALLI, S ^{[1
]}

PREMAVATHI, N ^{[1
]}

机构：

[1] CHEM TESTING & ANAL LAB, MADRAS 600032, INDIA

来源：

ANALYTICAL CHEMISTRY | 1976年 / 48卷 / 14期

关键词：

D O I：

10.1021/ac50008a025

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid method for determination of Sn in diverse materials in the concentration range of 0.002-1.0%, by a differential absorptiometric technique is presented. From the acid digest of the material, Sn is isolated as the sulfide with thioacetamide by coprecipitation with Cu added as a carrier; Sn is complexed with 4,5-dihydroxyfluorescein at a pH of 2.5 .+-. 0.1, and the absorbance is measured at 520 nm. The color is very stable; Beer''s law holds over a range of 0-50 .mu.g/25 ml. Recovery of added Sn is very good, and the results are reproducible with a precision of better than 1%.

引用

页码：2152 / 2154

页数：3

共 18 条

[1] SPECTROPHOTOMETRIC DETERMINATION OF TIN WITH RHODAMINE B [J].