BS EN 838-2010 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods《工作场所暴露 用扩散取样器测量气体和水蒸汽用程序 要求和试验方法》.pdf
《BS EN 838-2010 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods《工作场所暴露 用扩散取样器测量气体和水蒸汽用程序 要求和试验方法》.pdf》由会员分享,可在线阅读,更多相关《BS EN 838-2010 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods《工作场所暴露 用扩散取样器测量气体和水蒸汽用程序 要求和试验方法》.pdf(44页珍藏版)》请在麦多课文档分享上搜索。
1、BS EN 838:2010ICS 13.040.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDWorkplace exposure Procedures formeasuring gasesand vapours usingdiffusive samplers Requirements and testmethodsThis British Standardwas published under theauthority of the StandardsPolic
2、y and StrategyCommittee on 28 February2010. BSI 2010ISBN 978 0 580 60749 3Amendments/corrigenda issued since publicationDate CommentsBS EN 838:2010National forewordThis British Standard is the UK implementation of EN 838:2010. Itsupersedes BS EN 838:1996 which is withdrawn.The UK participation in it
3、s preparation was entrusted to TechnicalCommittee EH/2/2, Work place atmospheres.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its corr
4、ect application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 838:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 838 January 2010 ICS 13.040.30 Supersedes EN 838:1995English Version Workplace exposure - Procedures for measuring gases and vapours usin
5、g diffusive samplers - Requirements and test methods Exposition sur les lieux de travail - Procdures pour le mesurage des gaz et vapeurs laide de dispositifs de prlvement par diffusion - Exigences et mthodes dessaiExposition am Arbeitsplatz - Messung von Gasen und Dmpfen mit Diffusionssammlern - Anf
6、orderungen und Prfverfahren This European Standard was approved by CEN on 11 December 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date
7、lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the
8、responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greec
9、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Managemen
10、t Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 838:2010: EBS EN 838:2010EN 838:2010 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definit
11、ions .54 Symbols and abbreviations 55 Types of samplers .76 Requirements .76.1 General 76.2 Sampler requirements .86.3 Measuring procedure requirements 97 General test conditions 117.1 Reagents 117.2 Apparatus 117.3 Independent method 127.4 Generation of a calibration gas mixture . 128 Test methods
12、. 138.1 General . 138.2 Sampler test methods 138.3 Measuring procedure test methods 168.4 Uncertainty of measurement . 219 Test report . 23Annex A (informative) Fundamentals of diffusive sampling 24Annex B (informative) Estimation of uncertainty of measurement . 26Annex C (informative) Example of es
13、timation of expanded uncertainty 36Bibliography . 39BS EN 838:2010EN 838:2010 (E) 3 Foreword This document (EN 838:2010) has been prepared by Technical Committee CEN/TC 137 “Assessment of workplace exposure to chemical and biological agents”, the secretariat of which is held by DIN. This European St
14、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of the elements of this
15、 document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 838:1995. The major technical changes between this European Standard and the previous edition are as follows: a) adaptation of th
16、e framework for assessing the performance of procedures for measuring gases and vapours against the general requirements for the performance of procedures for measuring chemical agents in workplace atmospheres as specified in EN 482; b) revision of the calculation model for the uncertainty of measur
17、ement to comply with EN 482 and ENV 13005; c) modification of the classification scheme for sampler types; d) deletion of the informative annexes on the evaluation of diffusive samplers by means of field tests. According to the CEN/CENELEC Internal Regulations, the national standards organizations o
18、f the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom
19、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 838:2010EN 838:2010 (E) 4 Introduction This European Standard provides a framework for assessing the performance of procedures for measuring gases and vapours against the general requirements for the performance of pr
20、ocedures for measuring chemical agents in workplace atmospheres as specified in EN 482. These performance criteria include maximum values of expanded uncertainty achievable under prescribed laboratory conditions for the methods to be used. In addition, the performance criteria should also be met und
21、er a wider variety of environmental influences, representative of workplace conditions. This European Standard enables manufacturers and users of diffusive samplers and developers and users of procedures for measuring gases and vapours to adopt a consistent approach to method validation. BS EN 838:2
22、010EN 838:2010 (E) 5 1 Scope This European Standard specifies performance requirements and test methods under prescribed laboratory conditions for the evaluation of diffusive samplers and of procedures using these samplers for the determination of gases and vapours in workplace atmospheres. This Eur
23、opean Standard is applicable to diffusive samplers and measuring procedures using these samplers in which sampling and analysis are carried out in separate stages. This European Standard is not applicable to: diffusive samplers which are used for the direct determination of concentrations; diffusive
24、 samplers which rely on sorption into a liquid. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
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