EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF MOLYBDENUM(V) USING N-1-HYDROXY-N-1,N-2-DIPHENYLBENZAMIDINE AND THIOCYANATE

被引：14

作者：

BERHANU, B ^{[1
]}

CHANDRAVANSHI, BS ^{[1
]}

机构：

[1] UNIV ADDIS ABABA,DEPT CHEM,ADDIS ABABA,ETHIOPIA

来源：

ANALYTICAL LETTERS | 1995年 / 28卷 / 09期

关键词：

MOLYBDENUM DETERMINATION; SPECTROPHOTOMETRY; N-1-HYDROXY-N-1; N-2-DIPHENYLBENZAMIDINE; STEEL ANALYSIS;

D O I：

10.1080/00032719508002774

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Molybdenum(V) has been found to react with thiocyanate and N-1-hydroxy-N-1,N-2-diphenylbenzamidine (HDPBA) to form a 1:3:1(Mo:SCN- :HDPBA) complex with a molar absorptivity of 13100 M(-1) cm(-1) at 470 nm. The complex is quantitatively extractable into 2.5% (v/v) amyl alcohol in benzene from 4-6 M hydrochloric acid solutions and the system obeyed Beer's law in the concentration range of 0.5-9.6 mu g mL(-1) of Mo. Optimum conditions for the extraction and determination of molybdenum have been established and a precise, sensitive and highly selective method has been developed for the determination of molybdenum(V) by solvent extraction and spectrophotometry. The method has been successfully applied to the determination of molybdenum in standard steels and synthetic matrices.

引用

页码：1681 / 1691

页数：11

共 24 条

[1]

ABASSI SA, 1987, ANAL LETT, V20, P2021

[2]

[Anonymous], 1987, ANALYST, V112, P199

[3] EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF MANGANESE(VII) WITH N-1-HYDROXY-N-1,N-2-DIPHENYLBENZAMIDINE [J].