Analytical separation of antimony(III) from bismuth(III), lead(II), gallium(III), thallium(III), tellurium(IV) and tin(IV) with cyanex 302

被引:1
|
作者
Vartak, SV [1 ]
Gaudh, JS [1 ]
Shinde, VM [1 ]
机构
[1] INST SCI,ANALYT LAB,MUMBAI 400032,INDIA
关键词
antimony(III); separation; cyanex; 302; solvent extraction; spectrophotometry;
D O I
10.1007/BF01243161
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A method is proposed for the separation of antimony(III) (100-400 mu g) from bismuth(III), lead(II), gallium(III), thallium(III), tellurium(IV) and tin(IV) from an aqueous solution of pH 0.5-1.5 using 8x10(-3)-1 x 10(-2) mol dm(-3) cyanex 302 dissolved in toluene as an extractant. The antimony is stripped from the cyanex phase with water and determined spectro-photometrically with iodide. Various experimental parameters are optimized and the probable 1:3 stoichiometry of the extracted species is evaluated. The method is applicable to the analysis of alloys and pharmaceutical samples. The separation and determination take only 20 min.
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页码:41 / 44
页数:4
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