ISO INTERNATIONAL STANDARD 10278 First edition 1995-04-01 Steel Determination of manganese content - Inductively coupled plasma atomicemissionspectrometricmethod Acier-Dosage dumanganese-Methode parspectrométrie d'émission atomique deplasma avec couplage inductif ISO Referencenumber ISO10278:1995(E) IS010278:1995(E) Foreword Iso (the International Organization for Standardization) is a worldwide technical committees. Each member body interested in a subject for which a technical cormmitee has been established has the right to be and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (iEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. InternationalStandardISO10278waspreparedbyTechnical Committee ISO/TC 17,Steel, Subcommittee SC 1,Methods of determination of chemicalcomposition. Annex Aforms an integral part of this International Standard.AnnexesB and C areforinformation only ISO 1995 All rights reserved. Unless otherwise specitied. no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56. CH-1211 Geneve 20: Switzerland Printed in Switzerland ii INTERNATIONALSTANDARDISO ISO10278:1995(E) Steel Determination of manganese content Inductively coupled plasma atomic emission spectrometric method 1 Scope ISO5725:1986，P Precisionoftest methods Determination of repeatability and reproducibility for This International Standard specifies an inductively a standard test method by inter-laboratory tests. coupledplasmaatomicemissionspectrometric method for the determination of the manganese con- 3Principle tent in unalloycd steels. Dissolution of a test portion in a mixture of The method is applicable to manganese contents be- hydrochloric and nitric acids and dilution of the sol- tween0.002%(m/m)and1.5%(m/m). ution to a known volume.If necessary,addition of scandiumoryttriumasaninternalstandard. Nebulization of the solution into an inductively coup- ledplasmaatomic emissionspectrometerandmcas Normative references urement of the intensity of the emitted light from manganese at 257,61 nm and, optionally. emitted The following standards contain provisions which. light from scandium at 361,38nm or yttrium at through reference in this text, constitute provisions 371.03 nm, simultaneously. of this International Standard. At the time of publi- cation. the editions indicated were valid. All standards Reagents are subject to revision, and parties to agreements based on this International Standard are encouraged During the analysis, unless otherwise stated, use only to investigate the possibility of applying the most re- reagents of recognized analytical grade and only grade cent editions of the standards indicated below. 2 water as specified in ISo 3696. Members of IEC and ISO maintain registers of cur- rently valid International Standards. 4.1 Pure iron, containing less than 0,000 1 % (m/m) of manganese. Is0377-2:1989,Selectionandpreparationofsamples andtestpiecesof wroughtsteels-Part2:Samples 4.2 Hydrochloric acid, p about 1,19 g/ml, diluted forthedetermination of the chemical composition. 1 + 1. Iso385-1:1984.LaboratoryglasswareBurettes 4.3 Nitric acid, p about 1,40 g/ml, diluted 1 + 1. Part 1: General requirerments. Iso648:1977,Laboratory glassware One-mark 4.4 Manganese standard solution. pipettes. 4.4.1Manganese standard solution A, corre- Is01042:1983.Laboratoryglassware One-mark sponding to 0,5 g of Mn per litre. volumetric flasks. Weigh, to the nearest 0,1 mg. 0,500 g of manganese Iso3696:1987.Waterforanalytical laborat