BS ISO BRITISH STANDARD 6561-2:2005 Fruits, vegetables and derived products - Determination of cadmium content - Part 2: Method using flame atomic absorption spectrometry Confirmed March 2010 ICS 67.080.01 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO6561-2:2005 National foreword This British Standard reproduces verbatim IS0 6561-2:2005 and implements it as the UK national standard. Any enquiries on this text should be forwarded to Head of International Content, Standards Development, BSI, 389 Chiswick High Road, LondonW4 4ALwhowillpresenttothe responsibleinternational/European committee any such enquiries on the interpretation, or proposals for change, and keep UK interests informed. Cross-references The British Standards which implement international publications referred to in this document may be found in 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 responsiblefor its correct application. Compliance with a British Standard does not ofitself confer immunity fromlegal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and ii, a blank page, pages 1 to 6, 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 This British Standard was published under the authority Amd. No. Date Comments of the Standards Policy and Strategy Committee on 24January2005 @BSI24January2005 ISBN 0580453529 BSIS06561-2:2005 ISO INTERNATIONAL 6561-2 STANDARD First edition 2005-02-01 Fruits, vegetables and derived products - Determination of cadmium content - Part 2: Method using flame atomic absorption spectrometry Fruits, legumes et produits derivesDetermination de la teneuren cadmium Partie 2:Methodeparspectrometried'absorption atomique avec flamme Reference number ISO 6561-2:2005(E) BS IS0 6561-2:2005 = BSIS0 6561-2:2005 Foreword ISO (the International Organization for Standardization) is a worldwidefederation of national standards bodies InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standard requires approval by at least 75% of the memberbodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 6561-2 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 3, Fruit and vegetableproducts. This first edition of ISO 6561-2, together with ISO 6561-1:2004, cancels and replaces ISO 6561:1983, which has been technicallyrevised. Iso 6561 consists of the following parts, under the general title Fruits, vegetables and derived products Determinationofcadmiumcontent: Part1:Methodusinggraphitefurnaceatomicabsorptionspectrometry Part2:Methodusingflameatomicabsorptionspectrometry blank BS IS0 6561-2:2005 Fruits, vegetables and derived products Determination of cadmium content- Part 2: Method using flame atomic absorption spectrometry Scope This part of isO 6561 specifies an atomic absorption spectrometric method for the determination of the cadmium content of fruits, vegetables and derived products. NOTE The method of cadmium determination in fruit, vegetables and derived products is based on AOAC Official Methods of Analysis [1]. 2Principle This method is based on the decomposition of organic matter with HNO3, H2SO4 and H2O2, extraction of cadmium by dithizone-CHCls at pH 9, and determination of cadmium by flame atomic absorption spectrometry. 3 Reagents Use only reagents of recognized analytical grade, unless otherwise specified, and water which has been distilled twice in borosilicate glass apparatus, or water of at least equivalent purity. 3.1 Nit