MICELLAR MEDIUM FOR THE ANALYSIS OF COMPLEX-MIXTURES OF MOLYBDENUM AND TUNGSTEN BY DERIVATIVE SYNCHRONOUS SPECTROFLUOROMETRY IN STEELS

被引：13
作者：
BLANCO, CC
CAMPANA, AMG
BARRERO, FA
CEBA, MR
机构：
[1] Department of Analytical Chemistry, Faculty of Sciences, University of Granada
来源：
TALANTA | 1995年 / 42卷 / 08期
关键词：
D O I：
10.1016/0039-9140(95)01506-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The cationic surfactant hexadecyltrimethylammonium bromide enhances the fluorescence intensity of both molybdenum and tungsten complexes obtained with Alizarin Red S. This characteristic has been used for a sensitive simultaneous spectrofluorimetric determination of both ions over the range 32-4000 ng/ml and 49-2500ng/ml for Mo and W, respectively. Good selectivity is achieved applying the well known synchronous derivative technique with a minucious pH selection. The proposed method has been applied to a certified steel sample with recoveries between 96 and 102%.
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页码：1037 / 1044
页数：8
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