Flotation-spectrophotometric method for the determination of mercury using iodide and brilliant green

被引：15
|
作者：
Mathew, L [1 ]
Reddy, MLP [1 ]
Rao, TRRTP [1 ]
Iyer, CSP [1 ]
Damodaran, AD [1 ]
机构：
[1] CSIR,REG RES LAB,TRIVANDRUM 695019,KERALA,INDIA
来源：
MIKROCHIMICA ACTA | 1997年 / 127卷 / 1-2期
关键词：
mercury; flotation spectrometry; paper industry effluents; orthogonal array design; brilliant green;
D O I：
10.1007/BF01243176
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This paper describes a sensitive spectrophotometric method for the determination of mercury, based on the flotation of a mercury iodide-brilliant green complex with cyclohexane at pH 5 and dissolution of the complex in acetone. The absorbance of the complex is measured at 625 nm. Beer's law is obeyed from 4-500 mu g/l of mercury. The method is highly sensitive (epsilon = 5.96 x 10(5) l mol(-1) cm(-1)) and selective, as it is free from interferences by almost all cations and anions in the presence of EDTA. Furthermore, a two-level orthogonal array design as a chemometric method has been used for optimization of the various parameters involved. The method has been successfully applied to paper industry effluents.
引用
收藏
页码：125 / 128
页数：4
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