1、BRITISH STANDARD BS EN 14338:2003 Paper and board intended to come into contact with foodstuffs Conditions for determination of migration from paper and board using modified polyphenylene oxide (MPPO) as a simulant The European Standard EN 14338:2003 has the status of a British Standard ICS 67.250 B
2、S EN 14338:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 January 2004 BSI 9 January 2004 ISBN 0 580 43234 3 National foreword This British Standard is the official English language version of EN 14338:2003. The UK participation in it
3、s preparation was entrusted by Technical Committee CW/47, Materials and articles in contact with foodstuffs, to Subcommittee CW/47/3, Paper and board in contact with foodstuffs, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to it
4、s secretary. Cross-references The British Standards which implement international or European 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
5、 Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to unders
6、tand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises
7、 a front cover, an inside front cover, the EN title page, pages 2 to 7 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. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14338 D
8、ecember2003 ICS67.250 Englishversion Paperandboardintendedtocomeintocontactwithfoodstuffs Conditionsfordeterminationofmigrationfrompaperandboard usingmodifiedpolyphenyleneoxide(MPPO)asasimulant Papiersetcartonsdestinstreencontactavecdes denresalimentairesConditionsdedterminationdela migrationdespapi
9、ersetcartonsenutilisantdeloxydede polyphnylnemodifi(MPPO)commesolvantsimulateur PapierundPappevorgesehenfrdenKontaktmit LebensmittelnVoraussetzungenfrdieBestimmungdes bergangsvonPapierundPappedurchdieAnwendung vonmodifiziertenPolyphenylenoxiden(MPPO)alsein Simulanz ThisEuropeanStandardwasapprovedbyC
10、ENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentra
11、lSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationals
12、tandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNOR
13、MUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN14338:2003:EEN14338:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Principle4 4 Reagentsandextraction . 5 5 Apparatus .5 6
14、 Samplepreparation .6 7 Procedure .6 8 Expressionofresults . .7 9 Testreport . .7EN14338:2003(E) 3 Foreword Thisdocument(EN14338:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC172“Paper,boardand pulps”,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eith
15、erbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,
16、CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN14338:2003(E) 4 1Scope ThisEuropeanStandardspecifiesamethodtoassessthetransferormigrationofspecificvolatileandsemivo
17、latile substancesfrompaperandboard.Thistestmethodisdevelopedforpaperandboardintendedtocomeincontact withdry,nonfattyfoodstuffsandpaperandboardforbakingpurposes.Inthelastcasethemodified polyphenylenoxide(MPPO)canbeseenasasubstitutesimulantforfattycontact. NOTE MPPOcanalsobeseenasasubstitutesimulantfo
18、roliveoil. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicatio
19、nsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN11861:2002, MaterialsandarticlesincontactwithfoodstuffsPlasticsPart1:Guidetotheselectionof conditionsandtestmethodsforoverallmigr
20、ation. EN118613:2002, MaterialsandarticlesincontactwithfoodstuffsPlasticsPart13:Testmethodforoverall migrationathightemperatures. 3Principle Thesurfaceofthearticletobetestediscoveredwithmodifiedpolyphenyleneoxide(Tenax 1) )andheldatthe desiredtimetemperaturetestconditionswherethemaximumtemperatureap
21、plicableis175C.Theheatingtakes placeinaconventionalovenevenwhenthesamplesareforuseinamicrowaveoven.Theexposureisfollowedby extractionoftheadsorbentusinganorganicsolventdependingontheusedspecificanalyticalmethod.Inthis extracttheanalysisforthedesiredcomponentsispossible. 1) Tenaxisatradenameofaproduc
22、tsuppliedbyVarianBV,Herculesweg8,NL4338PLMiddelburg.Thisinformationis givenfortheconvenienceofusersofthisEuropeanStandardanddoesnotconstituteanendorsementbyCENoftheproduct named.Equivalentproductsmaybeusediftheycanbeshowntoleadtothesameresults.EN14338:2003(E) 5 4 Reagentsandextraction 4.1General All
23、reagentsshallbeofrecognizedanalyticalquality,unlessotherwisespecified. 4.2 Acetoneforchromatography 4.3 Acetonitrileforchromatography 4.4 Diethyletherof99,8%purity 4.5 Pentaneforchromatography 4.6 Methanolforchromatography 4.7 Modifiedpolyphenyleneoxide(MPPO),60meshto80mesh. Modifiedpolyphenyleneoxi
24、deisapolymerwithahighmolecularweight(comprisedbetween500000daltonto 1000000dalton).Itisaporousmaterial,verystableatahightemperature( T max =350C),ahighsurfacearea andalowspecificmass(0,23g/cm). NOTE1 GaschromatogramsobtainedfromextractsofnewcommercialMPPOmaterialhasshownthatunacceptablehigh levelsof
25、impuritiescanbepresent. NOTE2 MPPOisalsoknownasTenax. 4.8Extraction ExtractionusingacetoneisobligatoryforcompletepurificationoftheMPPOpriortothefirstuseinthistest procedure.Theextractioniscarriedasfollows: PlaceMPPOinaSoxhletcartridgeandextractfor6hwithacetone.SpreadtheMPPOinaPetridishofsuitable dia
26、meterandplacethePetridishinafumehood.Allowthesolventtoevaporatewhilefrequentlymixingwithaglass rod.ThenplacethePetridishinanovenat160 Cfor6 h.AfterheatingstoretheMPPO,ifnotneeded immediately,inaclosedErlenmeyerflask. NOTE1 MPPOcanbeusedrepeatedlyifcleanedinthiswaybetweenuses. NOTE2 MPPOispowderyandl
27、ightweightandisreadilyblownaboutbyaircurrents.WhendryingMPPOinaforcedair oventhedishesshouldbecoveredtopreventtheMPPOfromblowingabout. 5Apparatus 5.1 Cuttingimplement, circularknife1dmorcirculartemplateofdiameter112mmwithascalpel 5.2Rule, graduatedinmm,withanaccuracyof0,5mmEN14338:2003(E) 6 5.3Spoon
28、 5.4 Analyticalbalance, capableofdeterminingatleastachangeofmassof10mg 5.5 Ovenorincubator, thermostaticallycontrolledandcapableofmaintainingthesettemperaturewithinthetolerancesspecifiedin EN118613:2002,TableB.2. NOTE Incaseofanovenwithaventilationsystemtheventilationrateshouldbeswitchedtolow. 5.6 G
29、lassPetridishes withaninternaldiameterofmorethan115mmfor1dmtestspecimen,shallowerthanthesmallerdish(see5.7). 5.7 GlassPetridishes withanexternaldiameterof114mmtocover1dmtestspecimen. 5.8Erlenmeyer flasks, glassstoppered,capacityof300ml 5.9 Glassfilterfunnels withoutandwithfrits 5.10Volumetricflasks,
30、 capacityof50ml 6 Samplepreparation Preparethetestspecimenbycutting1dmwiththecuttingimplement(see5.1). 7Procedure Carryouttheprocedureinduplicate.Place4gMPPOevenlyinthesmallerPetridish(see5.7).CoverthePetri dishwiththetestspecimenandclosethesystemwiththelargerPetridish(see5.6).Ifthetwosidesofthepape
31、ror boardarenotidentical,thenthesurfaceintendedforfoodcontactshouldfacedirectlytheMPPO.Assemblethe Petridishandtheninvertthedishtostartthetest.Fortheblankdetermination,takeemptyPetridishesandplace initthesamemassofMPPOasplacedoneachtestspecimen. NOTE1 InsteadofthePetridishesitisalsopossibletouseacel
32、laccordingtoEN118613. NOTE2 CareshouldbetakentoensurethatanevenbedofMPPOcoversthetestspecimen,toanuniformdepth.EN14338:2003(E) 7 PlacethePetridishescontainingthetwotestspecimensandtheblank,intoanovenorincubator(see5.5)pre heatedtothetesttemperatureselected.Observethetemperatureoftheovenorincubatoran
33、dleavethePetri dishesfortheselectedperiodoftimeafterthetemperaturehasrecoveredtoatemperaturewithinthepermitted toleranceforthetesttemperature.Thetestconditions(timeandtemperature)shallbechosenfollowingtothe intendeduseofthematerialaccordingtoEN 11861:2002,annexB.RemovethePetridisheswiththetest speci
34、mensfromtheovenorincubatorandallowthemtocooltoroomtemperaturewithoutremovingtheglass covers. TransfertheMPPOadsorbentintotheErlenmeyerflask(see5.8)withtheaidofafunnelwithoutafrit(see5.9).If necessaryusethespoon(see5.3)forcompletetransferoftheMPPO.Pour20mloftheorganicsolventthrough thefunnelwithoutfr
35、it(see5.9)intotheErlenmeyerflaskandshakeitmanuallyfor1min.AllowtheErlenmeyer flaskanditscontentstostandfor5min,withoutshaking. Insertafilterfunnelwithfrit(see5.9)intothe50mlvolumetricflask(see5.10).DecantthesolventfromtheMPPO extractionthroughthefilterintotheflask. Repeatthisextractionprocedureusing
36、20mlsolvent. Rinsethefilterwiththeorganicsolventandfilluptothemark.Aliquotsofthissolutioncanbeusedforfurther analysis. 8 Expressionofresults ExpresstheamountofthedesiredcomponentadsorbedontotheMPPOasmilligrampersquaredecimetreofthe testspecimentakingonlythatareaintoaccountwhichwascoveredbytheMPPO. 9
37、 Testreport ThetestreportshallrefertothisEuropeanStandardandstate: a) allinformationnecessaryforcompleteidentificationofthesample,suchaschemicaltype,supplier,trade, mark,grade,butchnumber,thickness; b) conditionsoftimeandtemperatureofexposuretotheMPPO; c) anydeparturefromthespecifiedprocedurethatmay
38、haveaffectedtheresult; d) individualtestresults,andmeanofthese,expressedasmilligramsresiduepersquaredecimetreofsample; e) anyrelevantcommentsonthetestresults.BS EN 14338:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible f
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