BS EN ISO 11212-1-1997 Starch and derived products Heavy metals content Determination of arsenic content by atomic absorption spectrometry《淀粉和淀粉制品 重金属含量 原子吸收光谱法测定砷含量》.pdf
《BS EN ISO 11212-1-1997 Starch and derived products Heavy metals content Determination of arsenic content by atomic absorption spectrometry《淀粉和淀粉制品 重金属含量 原子吸收光谱法测定砷含量》.pdf》由会员分享,可在线阅读,更多相关《BS EN ISO 11212-1-1997 Starch and derived products Heavy metals content Determination of arsenic content by atomic absorption spectrometry《淀粉和淀粉制品 重金属含量 原子吸收光谱法测定砷含量》.pdf(14页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS EN ISO 11212-1:1997 Starch and derived products Heavy metals content Part 1: Determination of arsenic content by atomic absorption spectrometry The European Standard EN ISO 11212-1:1997 has the status of a British Standard ICS 67.180.20BSENISO 11212-1:1997 This British Standard,
2、having been prepared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the StandardsBoard and comes into effect on 15 April 1997 BSI 01-1999 ISBN 0 580 27458 6 National foreword This British Standard is the English language version of EN ISO
3、 11212-1:1997. It is identical with ISO 11212-1:1997 and implements it as the UK national standard. This British Standard has been produced to fulfil BSIs obligation to implement all European Standards but, because of the absence of interest in the UK in the subject concerned, there has been no UK p
4、articipation in the preparation of EN ISO 11212-1. Any queries relating to the EN should be directed to BSI, quoting the reference AW/100. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Cata
5、logue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their cor
6、rect 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, pages i and ii, theEN ISO title page, page 2, the ISO title page, page ii, pages 1 to 4 and a back cover. Thi
7、s standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO11212-1:1997 BSI 01-1999 i Contents Page National foreword Inside front
8、 cover Foreword 2 Foreword ii Text of ENISO11212-1 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11212-1 March 1997 ICS 67.180 Descriptors: See ISO document English version Starch and derived products Heavy metals content Part 1: Determination of arsenic content by atomic absorpt
9、ion spectrometry (ISO 11212-1:1997) Amidons, fcules et produits drivsTeneur en mtaux lourdsPartie 1: Dtermination de la teneur en arsenic par spectromtrie dabsorption atomique (ISO 11212-1:1997) Strke und Strkederivate SchwermetallgehaltTeil 1: Bestimmung des Arsengehaltes durch Atomabsorptionsspekt
10、rometrie (ISO 11212-1:1997) This European Standard was approved by CEN on 1997-02-28. 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
11、and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsib
12、ility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
13、rtugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide
14、 for CEN national Members. Ref. No. EN ISO 11212-1:1997 EENISO11212-1:1997 BSI 01-1999 2 Foreword The text of the International Standard ISO11212-1:1997 has been prepared by Technical Committee ISO/TC 93 “Starch (including derivatives and by-products)” in collaboration with CEN/CS. This European Sta
15、ndard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 1997, and conflicting national standards shall be withdrawn at the latest by September 1997. According to the CEN/CENELEC Internal Regulations, the nationa
16、l standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice T
17、he text of the International Standard ISO11212-1:1997 was approved by CEN as a European Standard without any modification. Contents Page 1 Scope 1 2 Definition 1 3 Principle 1 4 Reagents 1 5 Apparatus 1 6 Procedure 2 7 Expression of results 3 8 Precision 3 9 Test report 3 Annex A (informative) Resul
18、ts of interlaboratory test 4 Figure 1 Digestion apparatus 2 Table A.1 Interlaboratory test on corn starch 4EN ISO 11212-1:1997 ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern
19、ational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with
20、 ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an
21、International Standard requires approval by at least 75% of the member bodies casting a vote. International Standard ISO 11212-1 was prepared by Technical Committee ISO/TC 93, Starch (including derivatives and by-products). ISO 11212 consists of the following parts, under the general title Starch an
22、d derived products Heavy metals content: Part 1: Determination of arsenic content by atomic absorption spectrometry; Part 2: Determination of mercury content by atomic absorption spectrometry; Part 3: Determination of lead content by atomic absorption spectrometry with electrothermal atomization; Pa
23、rt 4: Determination of cadmium content by atomic absorption spectrometry with electrothermal atomization. Annex A of this part of ISO 11212 is for information only. Descriptors: Starches, food starch, chemical analysis, determination of content, heavy metals, arsenic, atomic absorption spectrometric
24、 method.ENISO 11212-1:1997 BSI 01-1999 1 1 Scope This part of ISO 11212 specifies a method for the determination of the arsenic content of starch, including derivatives and by-products, by atomic absorption spectrometry with hybride generation. The hybride generators currently available use very dif
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