FLOW-INJECTION EXTRACTION SPECTROPHOTOMETRIC DETERMINATION OF MANGANESE(VII) WITH BENZYLTRIBUTYLAMMONIUM CATIONS

被引：11

作者：

BURNS, DT

BARAKAT, SA

HARRIOTT, M

ELSHAHAWI, MS

机构：

[1] Department of of Analytical Chemistry, The Queen's University of Belfast, Belfast

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 270卷 / 01期

关键词：

FLOW INJECTION; SPECTROPHOTOMETRY; BENZYLTRIBUTYLAMMONIUM CATIONS; CUPRONICKEL ALLOY; EXTRACTION; LIQUID-LIQUID EXTRACTION; MANGANESE;

D O I：

10.1016/0003-2670(92)80109-K

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flow-injection manifold has been developed for the spectrophotometric determination of manganese(VII) at 548 nm after extraction into chloroform of the ion-associate, benzyltributylammonium permanganate. The carrier stream was a pH 6 buffer containing 10% (w/v) ammonium fluoride and the reagent stream was 0.10% (w/v) benzyltributylammonium chloride. The injection rate was 20 h-1. The calibration graph is linear up to 25 mug ml-1 and the detection limit (3 x baseline noise) is 0.91 mug ml-1 Mn(VII), based on 250-mul injection volumes. The system has been applied to the determination of manganese in steels and a cupro-nickel alloy.

引用

页码：213 / 215

页数：3

共 11 条

[1]

ALWEHAID A, 1987, THESIS U HULL

[2] ANALYTICAL ASPECTS OF ORGANO-P AS SB S SE TE AND SN(4) (ONIUM) CATIONS [J].