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1、9.1.08mg/kg.Methodisnotapplicabletofoodswithafatcontent³40%.AOACOfficialMethod999.10Notapplicabletomilkpowder.SeeTable999.10AfortheresultsofLead,Cadmium,Zinc,Copper,andIrontheinterlaboratorystudysupportingtheacceptanceofthemethod.]inFoodsAtomicAbsorptionSpectrophotometr
2、yCaution:Digestionvesselsmustcoolforanappropriatetimebe-afterMicrowaveDigestionforeopeninginordertoavoidburnsfromhotandcor-FirstAction1999rosivevapors.Alwaysgentlyaddacidtowater.NMLK–AOACMethodMaintainsafedistancefromfurnacesequippedwithZeemanbackgroundcorrectionwhenthe
3、magnetison.[ApplicabletodeterminationofZn,Cu,andFeinavarietyoffoodsConsultmanufacturer’sinstructionstodeterminesafebymicrowavedigestionandflameatomicabsorptiondistance,whichvariesfordifferentinstruments.Seespectrophotometry(FAAS),andCdandPbbymicrowavedigestionAppendixB,
4、LaboratorySafety,forsafeuseofcom-andgraphitefurnaceatomicabsorptionspectroscopy(GFAAS).pressedgases,inorganicacids,andatomicabsorptionMethodiscapableofdeterminingtheseelementsatconcentrationsspectrometer.Fordisposalof4%aceticacidsolutions,aboveapproximatelyPb(0.1),Cd(0.
5、01),Zn(4),Cu(0.2),andFe(7)followlocalregulations.Table999.10AInterlaboratorystudyresultsAnalyterange,aMetalSamplemg/kgMean,mg/kgnOutlierssrsRRSDr,%RSDR,%rRPb(GFAAS)Liver³0.10.1301110.0490.05537420.140.15Wheatbran0.1551200.0880.09157590.250.26bDiets0.3941200.0630.0981625
6、0.180.27Bovinemuscle0.3981020.086220.24Fish0.481200.13270.36Mushroom1.621200.26160.73Cd(GFAAS)Bovinemuscle³0.010.01241210.0034280.0097Liver0.1641300.0250.03415200.0700.094Wheatbran0.1711120.00780.0224.6130.0220.063Fish0.2111200.035170.099Mushroom0.4821120.053110.149bDie
7、ts0.7641210.0500.1056.5140.140.294Zn(FAAS)Fish³44.501200.419.11.1Milkpowder35.31403.39.39.1bDiets47.81311.92.54.05.35.47.1Mushroom56.91403.05.38.4Wheatbran73.51312.53.53.44.87.19.9Bovinemuscle147.31132.51.77.0Liver181.91222.88.81.64.87.925Cu(FAAS)Fish³0.20.241400.094390
8、.26Bovinemuscle2.63600.176.40.47Wheatbran10.141010.440.814.37.91.22.3Mushroom37.71402.25.76.0bDiets63.421220.9
