DIN EN 15765-2010 Foodstuffs - Determination of trace elements - Determination of tin by inductively coupled plasma mass spectrometry (ICP-MS) after pressure digestion German versi.pdf
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1、April 2010 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 6
2、7.050!$aZq“1625578www.din.deDDIN EN 15765Foodstuffs Determination of trace elements Determination of tin by inductively coupled plasma mass spectrometry(ICP-MS) after pressure digestionEnglish translation of DIN EN 15765:2010-04Lebensmittel Bestimmung von Elementspuren Bestimmung von Zinn mit Massen
3、spektrometrie mit induktiv gekoppeltem Plasma(ICP-MS) nach DruckaufschlussEnglische bersetzung von DIN EN 15765:2010-04Produits alimentaires Dosage des lments traces Dosage de ltain par spectromtrie de masse plasma induit par haute frquence(ICP-MS) aprs digestion sous pressionTraduction anglaise de
4、DIN EN 15765:2010-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 13 pages04.10 DIN EN 15765:2010-04 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 275 “Food an
5、alysis Horizontal methods” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Lebensmittel und landwirtschaftliche Produkte (Food and Agricultural Products Standards Committee), Working Committee NA 057-01-09 AA Elemente und ihre Verbindungen
6、. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5725-1 DIN ISO 5725-1 ISO 5725-2 DIN ISO 5725-2 National Annex NA (informative) Bibliography DIN ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results Part 1:
7、General principles and definitions DIN ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15765 December
8、 2009 ICS 67.050 English Version Foodstuffs - Determination of trace elements - Determination of tin by inductively coupled plasma mass spectrometry (ICP-MS) after pressure digestion Produits alimentaires - Dosage des lments traces - Dosage de ltain par spectromtrie de masse plasma induit par haute
9、frquence (ICP-MS) aprs digestion sous pression Lebensmittel - Bestimmung von Elementspuren - Bestimmung von Zinn mit Massenspektrometrie mit induktiv gekoppeltem Plasma (ICP-MS) nach Druckaufschluss This European Standard was approved by CEN on 7 November 2009. CEN members are bound to comply with t
10、he 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 obtained on application to the CEN Management Centr
11、e 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 CEN Management Centre has the same status as the official
12、 versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloven
13、ia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nat
14、ional Members. Ref. No. EN 15765:2009: EEN 15765:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Principle 44 Reagents .45 Apparatus and equipment 56 Procedure .67 Evaluations .78 Precision .79 Test report 8Annex A (informative) Results of the inter-laboratory test .9Bibliograp
15、hy . 11DIN EN 15765:2010-04 EN 15765:2009 (E) 3 Foreword This document (EN 15765:2009) has been prepared by Technical Committee CEN/TC 275 “Food analysis - Horizontal methods”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by
16、 publication of an identical text or by endorsement, at the latest by June 2010, and conflicting national standards shall be withdrawn at the latest by June 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC
17、shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark,
18、Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15765:2010-04 EN 15765:2009 (E) 4 1 Scope This European Sta
19、ndard specifies a method for the determination of tin in foodstuffs by inductively coupled plasma mass spectrometry (ICP-MS) after pressurized digestion. The collaborative study included carrot puree, tomato puree, pineapple, mixed fruit, white wine, peach powder, tomato powder, beans powder, powder
20、ed fruit yoghurt and fish powder foodstuffs having a mass fraction of tin ranging from 2,5 mg/kg to 259 mg/kg. 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 reference
21、s, the latest edition of the referenced document (including any amendments) applies. EN 13805, Foodstuffs Determination of trace elements Pressure digestion 3 Principle The sample is mineralized through pressurized digestion with nitric acid and hydrochloric acid in accordance with EN 13805. The dig
22、estion solution obtained thereby is diluted and then atomised and ionised in an inductively coupled argon plasma. After extraction from the plasma by a system of sampler and skimmer cones the positive (charged) tin ions are separated according to their mass charge ratio in a mass spectrometer and qu
23、antified in a detector system. 4 Reagents 4.1 General The concentration of tin in the reagents and water used shall be low enough not to affect the results of the determination. Solution shall be understood as an aqueous solution unless otherwise specified. 4.2 Nitric acid, mass fraction w(HNO3) 65
24、%, mass concentration (HNO3) 1,4 g/ml. 4.3 Hydrochloric acid, w(HCl) 30 %, density (HCl) 1,15 g/ml. 4.4 Stock solutions 4.4.1 Tin stock solution, mass concentration (Sn) = 1 000 mg/l. 4.4.2 Rhodium stock solution (internal standard), mass concentration (Rh) = 1 000 mg/l. 4.5 Standard solutions 4.5.1
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