RAPID CHROMITE DISSOLUTION USING A MANGANESE-DIOXIDE LITHIUM-SULFATE SULFURIC-ACID MIXTURE FOR MATRIX-INDEPENDENT DETERMINATION OF CHROMIUM

被引：13

作者：

CHATTOPADHYAY, P ^{[1
]}

MISTRY, M ^{[1
]}

机构：

[1] GEOL SURVEY INDIA,BHUBANESWAR,ORISSA,INDIA

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 295卷 / 03期

关键词：

ATOMIC ABSORPTION SPECTROMETRY; SPECTROPHOTOMETRY; TITRIMETRY; CHROMITE DISSOLUTION; CHROMIUM; QUALITY CONTROL;

D O I：

10.1016/0003-2670(94)80238-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A mixture of manganese dioxide-lithium sulphate-sulphuric acid has been used for accurate and precise estimation of chromium in various chromite matrices. Inter-method comparison studies show that the proposed procedure can be used for a quality control programme and in the evaluation of reference materials. The method is very simple and easily adaptable and involves no separation of the analyte from the matrix elements. Sample decomposition is straight forward (0.2 g of sample + 0.3 g of MnO2 + 1.0 g of Li2SO4 + 10 ml of H2O + 20 ml of 36 M H2SO4).

引用

页码：325 / 330

页数：6

共 26 条

[11]

KANE JS, 1991, USGS81991 OP FIL REP

[12] MICRO-FUSION AND SPECTROPHOTOMETRIC DETERMINATION OF IRON(II) AND IRON(III) IN CHROME SPINELS AND OTHER REFRACTORIES [J].