BS ISO BRITISH STANDARD 9682-2:2006 Iron ores Determination of manganese content Part 2: Periodate Spectrophotometric method ICS 73.060.10 BSi NO COPYINGWITHOUT BSIPERMISSIONEXCEPTASPERMITTEDBY COPYRIGHTLAW British Standards BSISO 9682-2:2006 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 9682-2:2006. It supersedes BS 7020-9-1:1988 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/58, Iron ores. A list of organizations represented on ISE/58 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsiblefor its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was Amendmentsissuedsincepublication published under the authority of the Standards Policy and Amd. No. Date Comments Strategy Committee on 31 January 2007 BSI 2007 ISBN9780 580 50114 2 BS IS0 9682-2:2006 ISO INTERNATIONAL STANDARD 9682-2 First edition 2006-12-01 Iron ores Determination of manganese content - Part 2: Periodate spectrophotometric method Minerais defer-Dosagedumanganese Partie2:Methode spectrophotometrique auperiodate Reference number ISO 9682-2:2006(E) i BSISO9682-2:2006 Contents Page Foreword. 1 Scope 2 Normative references 3 Principle. 4 Reagents.. 5 Apparatus 6 Sampling and samples. 6.1 Laboratory sample... 6.2 Preparation ofpredried test samples... 7 Procedure.... 7.1 Numberofdeterminations. 7.2 Testportion.. 7.3 Blank test and check test... 7.4 Calibration.... 7.4.1 Samplescontaining morethan 0,1%(bymass)ofmanganese. 7.4.2 Samplescontaininglessthan0,1%manganese. 7.5 Determination... 7.5.1 Decompositionofthetestportion 7.5.2 Treatment of the residue.... 7.5.3 Treatment ofthetest solution 7.5.4 Spectrophotometricmeasurements 8 Expressionofresults. 8.1 Caiculation of mass fraction of manganese 8.2 Generaltreatmentofresults... 8.2.1 Repeatabilityandpermissibletolerance. 8.2.2 Determination of analytical result.... 8 8.2.3 Between-laboratories precision.... 8.2.4 Check for trueness... 8.2.5 Calculation of final results. 8.3 9 Testreport. AnnexA (normative)Flowsheetof theprocedurefortheacceptanceof analytical valuesfortest samples.... 11 AnnexB (informative)Derivation ofrepeatabilityandpermissibletolerance.. 12 Annex C (informative)Precision data obtained by international analytical trials .... ii BS ISO 9682-2:2006 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. 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 least75%ofthe member bodies castinga vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 9682-2 was prepared by Technical Committee ISO/TC 102, Iron ore and direct reduced iron Subcommittee SC2, Chemicalanalysis. This first edition of IsO 9682-2 cancels and replaces IsO 3886:1986, which has been technically revised. It has been updated to alter the manner in which precision data are presented. content: Part 1:Flame atomic absorption spectrometricmethod Part2:Periodatespectrophotometricmethod iv BSIS09682-2:2006 IronoresDeterminationofmanganesecontent Part 2: Periodate spectrophotometric method WARNINGThispartof ISO9682mayinvolvehazardous materials,operationsandequipment.This responsibility of the user of this part of Iso 9682 to establish appropriate health and safet