ISO INTERNATIONAL STANDARD 22262-3 Firstedition 2016-10-01 Air quality - Bulk materials - Part 3: Quantitative determination of asbestos by X-ray diffraction method Qualité de I'air-Matériaux solides- Partie 3:Dosage quantitatif de I'amiante par la methode de diffraction des rayons X Referencenumber ISO22262-3:2016(E) ISO Intemational Organization for Standardization @IS02016 ed without license from IHS IS022262-3:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISo copyright office Ch.de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org etworking permitted without license from IHS IS022262-3:2016(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references ... 3 Terms and definitions ..1 4 Range ..3 5 Limit of quantification .3 6 Symbols and abbreviated terms. ..4 7 Requirementsfor quantification. ..4 8 Apparatus and reagents .5 8.1 Apparatus ..5 8.2 Reagents.. .6 9 QuantitativeXRD method and principle .7 9.1 QuantitativeXRDmethodsusinganexternalstandard .7 9.2 Summary of the quantitative method 7 9.3 Preparation ofworking curveand measurement. .8 9.4 Interference minerals. .9 10 Preparation of comminuted sample .9 10.1 Preparation of comminuted samplefrom original sample .9 10.2 Heat treatment of comminuted samples that contain organic constituents .9 10.3 Pretreatmentfor preparation of residual samples .10 10.4 Preparation of sub-residual samples .11 11 Diffractionpeaks for analysis ofasbestos and of interferencematerials ..11 11.1 Diffractionpeaksforquantitativeanalysisofasbestos ..11 11.2 Interference minerals. ..15 11.2.1 Possibleinterferenceminerals ..15 11.2.2 Massreductiontreatmentsfordissolvinginterferenceminerals 16 12 Quantitative analysis by XRD employing substrate standard mass absorption correction16 12.1 General 16 12.2 Preparation of working curve 17 12.2.1PreparationofworkingcurveI ..17 12.2.2Preparationofworking curveII ..17 12.3 Procedure for quantitative analysis. .18 12.4 Calculation ofasbestos mass fraction .18 12.4.1 Calculation of asbestos mass fraction from a residual sample .18 12.4.2Calculation of the asbestos mass fraction from a sub-residual sample. ..19 12.5 Lower limits of detection and quantitative determination for the working curve ..19 12.6 Evaluationofuncertaintyof XRDmeasurement ..20 13 Test report ..20 Annex A (normative)X-raydiffractometerparametersfor quantitative analysis ofasbestos ..22 AnnexB(normative)Substratestandardmassabsorptioncorrectionfor asbestos quantification. ..26 Annex C (informative) Types of commercial asbestos-containing materials and optimum analytical procedures. .27 AnnexD(informative)Effectsofmatrixreductionmethods .38 iii lout license from IHS