ISO INTERNATIONAL STANDARD 17091 First edition 2013-09-15 Workplace air Determination of lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium dihydroxide Method by measurement of corresponding cations by suppressed ion chromatography Air des lieux de travail - Détermination de la teneur en hydroxyde de lithium, hydroxyde de sodium, hydroxyde de potassium et dihydroxyde de calcium - Méthode par mesurage des cations correspondants par chromatographie ionique Reference number IS0 17091:2013(E) SO @ IS0 2013 under license with ISO IS0 17091:2013(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii Provided by IHS underlicense with ISO @ IS0 2013 - All rights reserved IS0 17091:2013(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions. .2 3.1 General definitions. .2 3.2 Particle size fraction definitions 3.3 Sampling definitions .3 3.4 Analyticaldefinitions 3.5 Statistical terms. .. 6 4 Principle .7 5 Requirement ..7 6 Reagents ..8 7 Apparatus. ..9 7.1 Sampling equipment. 7.2 Laboratory apparatus ..10 8 Occupational exposure assessment. ..11 8.1 General. .11 8.2 Personal sampling. .11 8.3 Static sampling. .12 8.4 Selection of measurement conditions and measurement pattern ..12 6 Sampling. .13 9.1 Preliminary considerations. .13 9.2 Preparation for sampling .15 9.3 Sampling position. ..15 9.4 Collection of samples .16 9.5 Transportation. .16 10 Analysis ..16 10.1 Preparation of test and calibration solutions .17 10.2 Instrumental analysis. .17 10.3 Estimation of detection and quantification limits. ..18 10.4 Quality control. .19 10.5 Measurement uncertainty 20 11 Expression of results .21 12 Method performance. .21 12.1 Sampling efficiency and sample storage .21 12.2 Quantification limit. 21 12.3 Upper limits of the working range 21 12.4 Bias and precision. 22 12.5 Uncertainty of sampling and analysis method .22 12.6 Interferences .22 13 Test report. .22 13.1 Test record .22 13.2 Laboratory report. .23 Annex A (informative) Temperature and pressure correction .24 Annex B (normative) Filter materials .25 Annex C (informative) Sampler wall deposits ..26 @ IS0 2013 - All rights reserved iii Provided by IHS under license with ISO