BS-EN-ISO-6978-1-2005.pdf
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1、BRITISH STANDARD BS EN ISO 6978-1:2005 Incorporating Amendment No. 1 to BS ISO 6978-1:2003 (renumbers BS ISO as BS EN ISO 6978-1:2005) Natural gas Determination of mercury Part 1: Sampling of mercury by chemisorption on iodine The European Standard EN ISO 6978-1:2005 has the status of a British Stan
2、dard ICS 75.060 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6978-1:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 December 2003 BSI 16 February 2006 ISBN 0 58
3、0 43103 7 National foreword This British Standard is the official English language version of EN ISO 6978-1:2005. It is identical with ISO 6978-1:2003. Together with BS ISO 6978-2 and -3, it supersedes BS 7678:1993 which is withdrawn. The UK participation in its preparation was entrusted to Technica
4、l Committee PTI/15, Natural gas and gas analysis, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related internati
5、onal and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in
6、the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsibl
7、e for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page
8、, pages 1 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 16103January 2006 Renumbers BS ISO 6978-1:2003 as BS EN ISO 6978-1:2005 Licensed Copy: sh
9、effieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6978-1 May 2005 ICS 75.060 English version Natural gas Determination of mercury Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003 )
10、 Gaz naturel Dtermination de la teneur en mercure Partie 1: Echantillonnage de mercure par chimisorption sur iode (ISO 6978-1:2003) Erdgas Bestimmung von Quecksilber Teil 1: Probenahme von Quecksilber durch Chemisorption an lod (ISO 6978-1:2003) This European Standard was approved by CEN on 17 April
11、 2005. 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 lists and bibliographical references concerning such national standards may be obtain
12、ed on application to the Central Secretariat 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 responsibility of a CEN member into its own language and notified to the Central Secret
13、ariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Port
14、ugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserv
15、ed worldwide for CEN national Members. Ref. No. EN ISO 6978-1:2005: E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of ISO 6978-1:2003 has been prepared by Technical Committee ISO/TC 193, Natural gas, of the International
16、 Organization for Standardization (ISO) and has been taken over as EN ISO 6978-1:2005 by CMC. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2005, and conflicting national standards shal
17、l be withdrawn at the latest by November 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greec
18、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 6978-1:2003 has been approved by CEN as EN ISO 6978-1:2005 without any modifications
19、. EN ISO 6978-1:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 6978-1:2003(E) Natural gas Determination of mercury Part 1: Sampling of mercury by chemisorption on iodine Gaz naturel Dtermination de la teneur en mer
20、cure Partie 1: chantillonnage de mercure par chimisorption sur iode Referecne unbmer OSI 1-8796:002)E(3 OSI 3002 INTERNATIONAL STANDARD ISO 6978-1 First edition 2003-10-15 imreteD sag larutaNntanoi of rucremy :1 traP ilpmaSem fo gnrucry by chemsiitprono i noidoen Gaz narute l retDmniitad noe la etru
21、en en mercrue raPtie :1 cahitnllnnoega de remcrue rap chimsiroptois nur oied EN ISO 6978-1:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled C
22、opy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Principle . 2 5 Apparatus. 2 6 Reagents 9 7 Sampling 10 7.1 General . 10 7.2 Sampling procedure (see Figures 1 and 2) 11 7.3 Sample treatment 12 8 Mercury determination . 13 8.
23、1 Transfer of mercury to AAS or AFS instrument. 13 8.2 Calibration 13 8.3 Blank test . 13 9 Calculation . 14 10 Precision 15 10.1 General . 15 10.2 Repeatability and reproducibility 15 10.3 Uncertainty. 15 11 Test report 15 Bibliography . 16 EN ISO 6978-1:2005 Licensed Copy: sheffieldun sheffieldun,
24、 na, Sun Nov 19 15:54:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO techn
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