DIN EN 15764-2010 Foodstuffs - Determination of trace elements - Determination of tin by flame and graphite furnace atomic absorption spectrometry (FAAS and GFAAS) after pressure d.pdf
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1、April 2010 Translation by DIN-Sprachendienst.English price group 11No 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
2、67.050!$aZn“1625575www.din.deDDIN EN 15764Foodstuffs Determination of trace elements Determination of tin by flame and graphite furnace atomic absorptionspectrometry (FAAS and GFAAS) after pressure digestionEnglish translation of DIN EN 15764:2010-04Lebensmittel Bestimmung von Elementspuren Bestimmu
3、ng von Zinn mit Flammen- und Graphitofen-Atomabsorptionsspektrometrie(FAAS und GFAAS) nach DruckaufschlussEnglische bersetzung von DIN EN 15764:2010-04Produits alimentaires Dosage des lments traces Dosage de ltain par spectromtrie dabsorption atomique flamme (SAAF) etspectromtrie dabsorption atomiqu
4、e four graphite (SAAFG) aprs digestion souspressionTraduction anglaise de DIN EN 15764:2010-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 18 pages04.10 DIN EN 15764:2010-04 2 A comma is used as the decimal marker. National foreword
5、This standard has been prepared by Technical Committee CEN/TC 275 “Food analysis 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 Co
6、mmittee), Working Committee NA 057-01-09 AA Elemente und ihre Verbindungen. 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, Acc
7、uracy (trueness and precision) of measurement methods and results Part 1: 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
8、method EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15764 December 2009 ICS 67.050 English Version Foodstuffs - Determination of trace elements - Determination of tin by flame and graphite furnace atomic absorption spectrometry (FAAS and GFAAS) after pressure digestion Produits alimentaires
9、- Dosage des lments traces - Dosage de ltain par spectromtrie dabsorption atomique flamme (SAAF) et spectromtrie dabsorption atomique four graphite (SAAFG) aprs digestion sous pression Lebensmittel - Bestimmung von Elementspuren - Atomabsorptionsspektrometrie (FAAS und GFAAS) nach Druckaufschluss Th
10、is European Standard was approved by CEN on 7 November 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 lists and bibliographical refer
11、ences 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 responsibility of a CEN member
12、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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
13、via, 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 Management Centre: Avenue Marnix 17, B-1000 Bruss
14、els 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15764:2009: EBestimmung von Zinn mit Flammen- und Graphitofen-EN 15764:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Principle 44 Reagents .45 Apparat
15、us and equipment 66 Procedure .77 Evaluations .98 Precision 109 Test report . 11Annex A (informative) Results of the inter-laboratory test 12Bibliography . 16DIN EN 15764:2010-04 EN 15764:2009 (E) 3 Foreword This document (EN 15764:2009) has been prepared by Technical Committee CEN/TC 275 “Food anal
16、ysis - Horizontal methods”, the secretariat of which is held by DIN. 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 June 2010, and conflicting national standards shall be withdrawn at the latest
17、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 shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standard
18、s organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
19、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15764:2010-04 EN 15764:2009 (E) 4 1 Scope This European Standard specifies a method for the determination of tin in foodstuffs and canned foods by flame and graphite furnace atomic absorption spectrometry (AA
20、S) after pressurized digestion. The collaborative study included foodstuffs such as carrot puree, tomato puree, pineapple, mixed fruit, white wine, peach powder, tomato powder, powdered beans, powdered fruit yoghurt, fish powder, having mass fractions of tin ranging from 43 mg/kg to 260 mg/kg (Flame
21、-AAS) and from 2,5 mg/kg to 269 mg/kg (Graphite Furnace AAS). 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
22、(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. In the resulting digestion solution, tin is quantified b
23、y flame AAS (F-AAS) or graphite furnace AAS (GF-AAS) depending on the concentration in the sample solution. 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. 4.2 Nitric acid Mass fraction w(HNO3) 65 %, m
24、ass concentration (HNO3) 1,4 g/ml. 4.3 Hydrochloric acid w(HCL) 30 %, (HCl) 1,15 g/ml. 4.4 Tin stock solution (Sn) = 1 000 mg/l. 4.5 Tin standard and calibration solutions 4.5.1 General The standard and calibration solutions are prepared from the stock solution by dilution in glass volumetric flasks
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