Micellanized spectrophotometric method for the determination of beryllium using haematoxylin

被引：5

作者：

Dayananda, B. P. ^{[1
]}

Revanasiddappa, H. D. ^{[1
]}

Kumar, T. N. Kiran ^{[1
]}

机构：

[1] Univ Mysore, Dept Chem, Mysore 570006, Karnataka, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2007年 / 67卷 / 05期

关键词：

beryllium; spectrophotometric method; haematoxylin; micelle; surfactant; cetyltrimethylammonium bromide;

D O I：

10.1016/j.saa.2006.10.020

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A simple and sensitized spectrophotometric method for the determination of trace amounts of beryllium has been described. The method is based on the formation of a ternary complex by the reaction of beryllium with haematoxylin in the presence of micellar medium (cationic surfactant, cetyltrimethylammonium bromide). The ternary complex of beryllium has a maximum absorbance at 592 nm and showed an excellent sensitivity (molar absorption coefficient of 7.07 x 10(4) L mol(-1) cm(-1) and the Sandell's sensitivity being 1.27 x 10(-4) mu g cm(-2)) and reproducibility (within-day precision: R.S.D. <= 0.36%, n = 5, between-day precision: R.S.D. <= 0.65%, n = 5). Linearity was achieved over the range 0.01-0.1 mu g mL(-1) of beryllium with a correlation coefficient of 0.9999. The effect of foreign substances on the determination has been examined. The proposed procedure has been applied to the determination of beryllium in water samples. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：1333 / 1338

页数：6

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