ISO 15633-2015 Iron ores - Determination of nickel - Flame atomic absorption spectrometric method《铁矿石 镍的测定 火焰原子吸收光谱法》.pdf

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1、 ISO 2015Iron ores Determination of nickel Flame atomic absorption spectrometric methodMinerais de fer Dosage du nickel Mthode par spectromtrie INTERNATIONAL STANDARDISO15633Second edition2015-07-r 1Reference numberISO 15633:2015(E)ISO 15633:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED

2、DOCUMENT ISO 2015 wx stss trTel. + 41 22 749 01 11 vsttyvrvy 7Web www.iso.orgISO 15633:2015(E)Foreword ivIntroductionv1 Scope . 12 Normative references 13 Principle 14 Reagents 15 Apparatus. 26 Sampling and samples 3xs . 3xt 37 Procedure. 4ys . 47.2 Test portion 4yu 4yv . 47.4.1 Decomposition of the

3、 test portion 4yvt . 5yvu 5yvv 5yvw . 6yvx . 68 Expression of results 6zs . 6zt . 7zts 7ztt 7ztu . 7ztv 8ztw 9zu 99 Test report. 9Annex A Flowsheet of the procedure for the acceptance of analytical values for test samples10Annex B Derivation of repeatability and permissible tolerance equations11Anne

4、x C Precision data obtained by international analytical trial 12Bibliography.13 ISO 2015 All rights reserved iiiContents ISO 15633:2015(E)Foreword s t www.iso.org/directives). www.iso. ). srt Iron ore and direct reduced iron, Subcommittee rt Chemical analysis. ISO 15633:2009 iv ISO 2015 All rights r

5、eserved ISO 15633:2015(E)Introduction xzwss rrrs The 22nd meeting of ISO/TC 102/SCt referee method. ISO 2015 All rights reserved v Iron ores Determination of nickel Flame atomic absorption spectrometric methodWARNING This International Standard may involve hazardous materials, operations, and equipm

6、ent. This International Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate health and safety practices and determine the applicability of regulatory limitations prior to

7、 use.1 Scope rrrsrs 2 Normative references xvz Laboratory glassware Single-volume pipettes srvt urzt Iron ores Sampling and sample preparation procedures uxx yyxv Iron ores Preparation of predried test samples for chemical analysis zrrrrstrr Quantities and units Part 1: General3 Principle v t 4 Reag

8、ents t uxxINTERNATIONAL STANDARD ISO 15633:2015(E) ISO 2015 All rights reserved 1 ISO 15633:2015(E)4.1 Sodium carbonate 2CO3 4.2 Sodium tetraborate 2B4O7 4.3 Lithium tetraborate (Li2B4O7 4.4 Hydrochloric acid O ssxss4.5 Hydrochloric acid O ssxssts4.6 Hydrochloric acid O ssxssss4.7 Hydrochloric acid O ssxsstsrr4.8 Nitric acid O sv4.9 Nitric acid O svssvsr O ssuvr O ssvz 4.11 Sulfuric acid O szv4.12 Sulfuric acid O szvss4.13 4-Methylpentan-2-one 4.14 Nickel standard solution Asrrrsrrr 4.15) in 30 ml of nitric 4.9 srrr 4.15 Nickel standard solution Bsrsrrr 4.14 srrr 5 Apparatus