第32卷，第3期2023年3月化学分析计量CHEMICALANALYSISANDMETERAGEVol.32,No.3Mar.2023喷雾干燥法制备乳粉中三聚氰胺质控样品段建华1，赵静1，李慧秀1，张利仙1，白艳梅1，卢行安2，李翠枝1，吕志勇1［1.内蒙古伊利实业集团股份有限公司，国家市场监管重点实验室（乳及乳制品检测与监控技术），呼和浩特010110；2.中国检验检疫科学研究院，北京100176］摘要建立乳粉中三聚氰胺质控样品的制备方法。将三聚氰胺标准溶液与乳粉复原乳通过混匀、均质、巴杀、浓缩、喷雾干燥、混合等步骤，制备得到乳粉基质的三聚氰胺质控样品，对均匀性和稳定性评估，由8家实验室依据GB/T22388—2008《原料乳与乳制品中三聚氰胺检测方法》对质控样品的三聚氰胺含量进行联合定值，评定定值结果的测量不确定度。结果表明采用喷雾干燥法制备得到的三聚氰胺质控样品，均匀性良好，稳定性达到24个月，定值结果为（2.22±0.38）mg/kg，k=2。关键词三聚氰胺；质控样品；均匀性；稳定性；喷雾干燥法中图分类号：O652文献标识码：A文章编号：1008-6145(2023)03-0001-05PreparationofmelaminequalitycontrolsampleinmilkpowderbyspraydryingmethodDUANJianhua1,ZHAOJing1,LIHuixiu1,ZHANGLixian1,BAIYanmei1,LUXingan2,LICuizhi1,LYUZhiyong1(1.InnerMongoliaYiliIndustrialGroupCo.,Ltd.,LaboratoryofMilkandDairyProductsDetectionandMonitoringTechnologyforStateMarketRegulationHohhot010110,China；2.ChineseAcademyofInspectionandQuarantine,Beijing100176，China)AbstractAmethodwasestablishedtopreparequalitycontrolsamplesofmelamineinmilkpowder.Melaminestandardsolutionandreconstitutedmilkpowderweremixed,homogenized,pasteurized,concentrated,spraydriedandmixedtopreparemelaminequalitycontrolsamplesofmilkpowdermatrix.Theuniformityandstabilityofthesampleswereevaluated.Themelaminecontentofqualitycontrolsampleswasdeterminedjointlyby8laboratoriesaccordingtoGB/T22388-2008"MethodsforTestingMelamineinRawMilkandDairyProducts"andtheuncertaintywasevaluated.Theresultsshowedthatthemelaminequalitycontrolsamplespreparedbyspraydryingmethodwereofgooduniformityandstabilityfor24months,withacharacteristicvalueof(2.22±0.38)mg/kg(k=2).Keywordsmelamine;qualitycontrolsample;homogeneity;stability;spraydryingmethod我国在《关于三...
