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1、TECHNICA1.REPORTISO/TR29263editionFirst2021-07Cerea1.sandcerea1.products一Samp1.ingstudiesCra1.ese1.productsca1.iers-EtudessurIchanti1.1.onnageReferencenumberISO/TR29263:2021(E)COPYRIGHTPROTECTEDDOCUMENTISO2021岫rkdea/山thUcdOthcnviscspfti1.iwcorrhotocopwg,puicatonpstingontheinternetoranintranet,withou
2、tpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.oworISsmemberbodyinthecountryoftherequester.%,tft晒Iandonnet8CH-1214*crnicr,GenevaPhone：M1.22749O1.11Pub1.ishedinSwitzerhndISO2021-A1.1.rightsreservedCerea1.sandcerea1.productsSamp1.ingstudies1 ScopeKingdom,forofficia1.Germa
3、nyre1.atedtograinsamp1.inginordertodefineaharmonizedsamp1.ing2 Normativereferences3 TermsanddefinitionsISOandIECmaintaintermino1.ogica1.databasesforuseinStandardiZatiOnatthefo1.1.owingaddresses：E1.ectropedia:avai1.ab1.eathttp:/www.e1.eetropedia.org/European(Iirectivesana1.ysis-Officia1.ordercontro1.
4、shannonizeContaminantsproceduresmycotoxinsrequiredmethodsTheStudyUieseextractfromPreSentedSamP1.ingrePort.assessment:samp1.inggrainin1.orries-Projectreportno339”5.1 Genera1.DepartmentOfEnvironmentaIScienceandTechno1.ogy,Renewab1.eResourcesAssessmentGroup,(project2955).reportofa13-monthprojectthatsta
5、rtedinMay2003.TheworkwasfundedbyHGCA5.2 ContextOperatorsshou1.dbefami1.iarwiththeequipmentandhaveanunderstandingoftheprob1.emsOfb)Takingmanua1.samp1.es: Useaspearthatwi1.1.co1.1.ectmu1.tip1.esub-samp1.esfromdifferentdepths； spreadsamp1.esfrompossib1.e1.eastacross(preferab1.j,withoutsamp1.epoints/1.o
6、ad.Thesesomepointsshou1.dbe Addthesamp1.estogethertoformacompositesamp1.erepresentingthe1.oad； dividedthecompositequarteringtosamp1.eworkingsamp1.e.avai1.ab1.ethesamp1.edividerbe grainqua1.ityappropriatetoretainpartofthecompositesamp1.eincaseofanydisputeoverthe 49Takingsamp1.eswitharemotesamp1.ingpr
7、obeinsertedmaximum.Thisinwi1.1.1.oad;toovercometheco1.1.ectionofsma1.1.samp1.eswhenthespearisthatitcanaccessasmuchofthe1.oadaspossib1.e; apartpossib1.econtro1.1.edmanua1.1.y,co1.1.ect8samp1.es/1.oadfromdifferentpointsspreadasfarquartering.Fai1.uremeasurcments(particu1.ar1.yscreening);quarterthesamp1
8、.eis1.ike1.ytoincrease6Studyno2:extractfromSamp1.inggraininstaticandf1.owingcondition-a1.ternativestotheregu1.atoryprotoco1.6.1 Genera1.ARVA1.ISInstitutduVegeta1.-3rueJosephctMarieHackin-75116PARIS19ISO2021-A1.1.rightsreservedsamp1.inggrain;Safetyshou1.da1.waysbethefirstconsiderationinanysamp1.ingop
9、eration. Useamanua1.spearthatisat1.east1,5m1.ong; Co1.1.ectabout500g/samp1.epoint.Thismayrequire2insertions/samp1.epoint;Co1.1.ectwide1.yasat5the1.oad8)risktheoperator.Incase,itmayappropriatetomovethe1.orrytogivebetteraccess； Mixthecompositesamp1.ethorough1.y;Dividebyconingandsamp1.ewithagivedivider
10、.IfthisisnotFai1.uretouseashou1.dortoconeandquarterthesamp1.eis1.ike1.ytoincreasetheerrorinthemeasurements(particu1.ar1.yscreenings);ItmaybeC) Wheretheamountofgrainco1.1.ectedperinsertioncanbeadjusted,itmaybeappropriatetosetthistointotroughsthehe1.p Trytoensurethatthe1.orryispositionedwiththesamp1.e
11、raboutha1.fwaya1.ongthetrai1.erso Ifthesamp1.erhasanautomaticprogramme,choosetheoptionthatco1.1.ects8samp1.esfromdifferentpoints;iftheasprobeoverthe1.oad； Mixthecompositesamp1.ethorough1.yandthendivideusingasamp1.edividerorbyconingandtheerrorthetosamp1.edividerortoconeand Itmaybeappropriatetoretainp
12、artofthecompositesamp1.eincaseofanydisputeoverthequa1.ity.ByG.VERON-DE1.ORandJ.1.EBRUNffthahrthtastt8e!ts11beaisreguhtoymethod500C)wheMcornI4Sampiiiieequ1.pmencnumberofInCTcmentsmassofIncrement(Kg)maCitJggrcgatesamp1.e(kg)：massofhbo11torsamp1.e(kg)ooso2S0.3AU2a1.6S85i9.sxp500T10/ImIBH43iB3IDfs0opSMT
13、。知,919331(MStatic1.orriesBoernerdividerBvrerdividerwheatcom64Iamp1.ingequipmentenumberofIncrementsussofincrement(kg)Dmassofaggregatesamp1.e(kg)，mmat1.csamp1.i8h1.S8i10,91.MgJNkWpnM3WUa4.2a4,2Iti；,.115001orbydivisionotheaggregatesamp1.eBocrncrdividerBoernrrdividerBoerncrdividerbatch)what3samp1.ingequ
14、ipmentnumberofIncrements】mawofincrement(k)massnfAgrvgtcsamp1.e(kg)1mawnthbomtonsamp1.e(kg)manu1.samp1.ingequipmentrorprobesbyaspirationOO51,92,7*A265911喇M那丽mmpr01.5byab1.ution11(1.9A2.714(J2210.3曲明Up1洲orpvbesbyaspiration22A3.033d10.7dM*mfremerdividerBoerf1.erdividerIdh(k心带伸刖质2thtsi1.ost)11d1VEQ1.加WU
15、3)cdeprodu!tsnbCSmS22(DISO2021-A1.1.rightsreservedTab1.e9(continued)Tcsbfrump1.ingP1.imS:regukton/standard/routinevbcat3samp1.ingcipmentnumberofIncrcmcnumcsofmerement(kg)massofaggre9tesamp1.e(kg):radMWrymeuopnbetbyaxp11(ion001.82.730i26Sxnuuv(*todutinvwto*JmxtofIaborAtorysamp1.e(kg).8aZ,7TestsEiIiS1
16、2005/09/206.4.1.1.3Descriptionofthetestsconducted1stseriesT25testswereconductedon：-f1.1.vwnrgtAine,nanjai1.0SMDetkwint114gMotteBWsmawCfSCdHtKt1.feont5HQfwsections;numberofsamp1.ingsrequired;-p%,iKc三a。砸照泥醐硒硒聘血ZCaW1.A毓知醐j11鹤咻虫牌;of3cases,themanua1.samp1.ingwascomparedtothemechanica1.samp1.ing：2 vertica
17、1.si1.osand1horizonta1.si1.o:wheat;mechanica1.probes(suction-operatedonprohes).thesamp1.esweretakenfrom5001batchesusingTheaggregatesamp1.esareobtainedbygroupingtogethertheindividua1.samp1.escorrespondingtof螂谕腑门典轴船Gnn那驮触method),-The蝙融僧蚓幽三胭觊油牌?哪腰8samp通thendividedinordertoobtaina10kg1.aboratorysamp1.e.
18、Aggregatesamp1.esof1.essthan10kgwerejusthomogenizedandthenground(1.abormi1.1.ginders).Thediagramsbe1.owshowsamp1.ingexamp1.estakenfrom1.orries.:100pointsofsamp1.ing:10pointsOfsamp1.ing:3pointsofsamp1.ingrandom1.ydistributedFigure6Examp1.eofsamp1.ingfrom1.orries23Figure7Examp1.eofsamp1.ingfromFigure8
19、BoemerdividerFigure9Examp1.eofsam-si1.op1.ingequipmentooCyK24p1.acesOfsamp1.ing12p1.acesOfsamp1.ing3 p1.acesOfsamp1.ing11stsamp1.ing2rxiseries:heterogeneitytests3tria1.swereconductedon2horizonta1.si1.osand1vertica1.si1.o.Gridsweredrawnonthetopofthesi1.osinordertoensureaconsistentsamp1.eacrossthewho1
20、.ebSiOSSBipW.Each100e1.ementarysamp1.ewasindividua1.1.yhomogenizedandgroundbeforeFigure10I1.1.ustrationofsamp1.ingfromsi1.osTab1.e10summarisesthedifferentsituationsandsamp1.ingequipment.一cfa:manua1.-Me:mechanica1.)n(winggrain(by5001)VG.P)M(1.)CA10n)wi11rrain-exitsi1.odwheatfringtransi1.agcfromCe1.1.
21、A1.Osi1.o2-batchof3801-F1.ow2197s匚OnR(manua1.)(.ii1fgrain:100t/hI1.307-batch500t-f1.owof-nnnIe-(：AVS/M)M1(1)，11831.1.11WAI1.1IU)wirgrain-exitsi1.oW1.I1.cornd1.rain:2S0t/hI1.100f11000tonre-*r-batchsamp1.ed:SoOt-)ON：2000(Za470-:oop(manua1.)(ZAVSM)M2(1)1)winggrain-exitsi1.oc：cornd1.fgrain:75t/hI1.100f1
22、1OOOt-onre-prbatchsamp1.ed:500t-)ON:2000(Zea:470:oop(manua1.)RF1.)T(1)IWinggrain-exittrain(trCorn2rfgrain:100t/hin-hatch494T(8wagons/d1.bywagonI1.owofgrain185t/hbyce1.1.-samp1.inRIrobe(manua1.)(Itat1.c-1.orriesVG.P)C1(M)CA1.O1.orry1/3frcwheatprmce1.1.A1.Osi1.o2(ensi1.edvatcce1.1.T1.si(o6)1.orrytow21
23、97prObCTripcttcctRcnaud-IS(VG.P)C1（八）CA1.O1.orry1/3f11wheatpr)f18tmce1.1.A1.Osi1.o2(ensi1.edvatece1.1.T1.si1.o6)-1.orrytow2197PrI1.k1.I1.UUIJObeSAMP1.EXCS90(me-1.,t、(IVG.P)C2(M)CA1.O1.orry273frxwheatpr)f18tmce1.1.10si1.o2(ensi1.edvatece1.1.T1si1.o6)-1.orrtow2197P1.obeTripetteetRenauditibiiibix(IVG.P
24、)CZ（八）CA1.O1.orry2/3f11wheatprf1.8(ince1.1.A10si1.o2(ensi1.edvatcce1.)T1.si1.o6)1.orrtowP1.2197mbeTripette&Renauddc1.cPre1.eveur,Pickup(IVG.P)C3(M)CA1.O1.orry3/3frcwheatpr)118tmce1.1.A1.Osi1.o2(ensi1.edvatece1.1.T1.si1.o6)1.orrytow2197prnechanica1.)ObCTripcttcctRcnaud-1、of18tTab1.e10Situationsandsam
25、p1.ingequipment(1of2)26&一SO20211AnrHSreservedR29263:2021(E)Referencetypeofsamp1.ingProductsamp1.cdraceabi1.ityofthebatchSIzeofthebatchsamp1.edrreeningbykitE1.isafDON(ppb)ISamp1.ingequipment1.a:manua1.Mc:mechanica1.)CERM)H7C4f1.atsi1.oCCwheatitI4of15*6w(1.*1.-H)-capacof12000t-batchof27261.138P1.nbehy
26、aspirationAgr-tonnessamp1.ingOn5001eterogeneityofsi1.os(1.CT)H8CA2HrtcrogcneityofI1.atsi1.ocewheat(1.I18,4*18,4T0,3PH)2726tonnessam.902P!obebyaspirationAgr-.VG.P)H1.CA1.OMerogene1.tyofvertica1.I1.iJCCwheatprIingonSOOtIA1.Osi1.o2(ensi1.edfromvatece1.1.T1.si1.o6)-samp1.ing2197,obebyaspirationgr-IkERfM
27、H线eteZtyoftVUCWheftt)n5001I4of15*6-(1.TH)-Capadty1nnCfEUCCCcn148e(mcc11s11!ca!jobebyaspirationgr-Tab1.e10(continued)&一So2021-A=-=sNserVed70TR29263:2021(E)Referencetuat1.onproductsaccording：totherei1.aCionaccording(othedraftstandardaccording：to(eroutinemethodosamp1.etaken()NineotmPIin8(min)maxxofsamP
28、MitRerdivision()tmeofho*mowen1.sa-Uondivf-1sion(m1.n)1.imeofgrinding1.eaning(r(min)toU!timein)massofsamp1.eUken(3)timeofsamp1.ing(m1.n)11MS5fMtnp1.eafterdiv1.six(k1.i)Imcoftinmm陪en1.S-Uondivision(min)cofnd*Wcntevery2m1.n9382548M1.,FO)M1.owingrainexitcm1209,6158BO3081707sec)Iincre-ncntevery04min10.47
29、1054184(7tFBsec)incre-on?nteverym、yhogeni339162CAVS/M)1.owingrainexitCrn165400958135410945458sec)Iincre-tentevery1.56956656119rIincre-entevery912246246CVS/M)si1.o1.owingrainexitcrn08,16600954773106872916min)Iincre-1.entever)1),05205837814r10min)1incre*entevery1.40959368IF1.)Tgrsi1.o1.owing11n/idcomH
30、,S%19.7215204512r11i11)n1.ybo-ngcni3SS68310min)niyho-11ogcn13S46Ut1.r1.orrhVG.P)fM)krr1/3Whc63.5959,7166161n1.yho11ocni4141t10IV/G.P)（八）Iony1/3wbeIt12615510394119612209.7966863IOsation111.yho-noeni3646n1.honogn1.31)30tA1.UI.V/G.P)I（八）IonCA1.Oy2/3whcit3759510X79042227r4tM5minforOrmaEConxiRoumnc11wth3
31、yhoen1.-on21M1.25minforIOrTniIHVendRoui11cmcthiHion42Tab1.e11Quantitiessamp1.ed,homogenized,dividedandground-timerequired(1of3)2021A=-whrsreserved63repeatabi1.ity),thenthevarianceofoneobservationis:ec(1)TheFormu1.a(1)showsthattheobservederrorononeva1.ueisthesumof2sourcesoferror:samp1.ingWhenweworkon
32、acompositesamp1.eobtainedfromnindividua1.samp1.es,thevarianceisgivenbythevarianceofanaverage：Thedueto(2)shows(hatthe1)onepartonantoaveragebe(part2).Thepartduetosamp1.ingerrorscanbereducedifweincreasethenumberofindividua1.samp1.es(三n).Bycons,theofduetoerrorsandthevarianceofsamp1.ingerrors：/_Butwhatva
33、1.uedoesittakeforit2?Theca1.cu1.ationofthetechnica1.theonthe7be1.edtoainpracticeCvofit5%.intova1.ueneithertheerrorsre1.atedtosub-samp1.ingofacompositesamp1.e,ortheinter-1.aboratoryvariabi1.ityiCvofreproducibi1.ity).Wethereforeconsiderthefo1.1.owing3hypothesesforthevariabi1.ityOftechnica1.errors:area
34、1.isticscenariowithaCVTof20%;Fromthevarianceofsamp1.ingca1.cu1.atedoneachsi1.o,wecanca1.cu1.iu4Mriabi1.ityduetosamp1.ingerrorsinre1.ationwiththenumberOfindividua1.samp1.es(part1ofFormu1.a2):n060306-0106-0406-0606-02070107-02average25293.27i2.75.212.54.8n060306-0106040606060207-010702averages209,95力1
35、3.74,99322,58.610,6n06-03060106-04060606-0207-0107-02average4UI。CKKgCfa(rf20uI1.his_fnaWVWv*w，*Woraut-ratVWWVII1.,t.i,ntIe-UJ1.rianr。.。ror-amivarianceofsamp1.ingerrorofabout4.Thismeansthatthepartofsamp1.ingerrorsinthetota1.erroraroundit%.Anotseemerrortotoincreasethewi1.1.have1.itt1.eimpactontota1.In
36、thecaseofaCvxof30%1.thereis,onaverage,aratiobetweenthevarianceoftechnica1.errorsandaroundof%.Adecreaseerror9.tomeanswi1.1.thepartof1.itt1.eeffectonthethetota1.erroristheseconditionsthereisnointerestinincreasingthesamp1.ingeffort.Theacracyofthemeanisprovidedbyca1.cu1.atingaconfidenceinterva1.aroundthisaverage.Under95%呼甥Formu1.a(4):(4)Thestandarddeviationoftheaverage,f,isca1.cu1.atedfromtheFormu1.a(2).Theassumptionthatthedatafo1.1.owanorma1.distributionisimp1.ausib1.e(seeFigures19to20g).butitisacceptab1.einthecaseOfaveragesca1.cu1.atedwithasuf
