2023年第4期广东化工第50卷总第486期www.gdchem.com·203·UPLC-MS/MS法测定虾中恩诺沙星含量的不确定度评估尹青春1,陈小妹1,陈春泉1,肖璇1,李备1,魏静1,周凌聿1,梁成美2,高云慨1*(1.海南省食品检验检测中心,国家市场监管重点实验室(热带果蔬质量与安全),海南海口570314;2.海南医学院热带医学院环境科学系,海南海口570000)[摘要]目的:评定UPLC-MS/MS法测定虾中恩诺沙星检测结果的准确性。方法:采用UPLC-MS/MS法测定了虾中恩诺沙星,并通过建立的数学模型,对检测过程中引入的各个不确定度进行了评估。结果:影响虾中恩诺沙星检测结果的不确定度主要因素是使用的仪器、配制标准溶液、配制标准曲线等。结论:当2个虾中恩诺沙星测定结果分别为346.9μg/kg、1664.4μg/kg时,其扩展不确定度分别为48.8μg/kg、231.9μg/kg,结果表示为346.9±48.8μg/kg、1664.4±231.9μg/kg,k=2。本研究可为科学评价UPLC-MS/MS法测定虾中抗生素残留的准确性提供参考。[关键词]计量学;超高效液相色谱-串联质谱法;虾;恩诺沙星;不确定度;评定[中图分类号]TS[文献标识码]A[文章编号]1007-1865(2023)04-0203-04UncertaintyEvaluationforDeterminationofEnrofloxacininShrimpbyUltra-performanceLiquidChromatography-tandemMassSpectrometryYinQingchun1,ChenXiaomei1,ChenChunquan1,XiaoXuan1,LiBei1,WeiJing1,ZhouLingyu1,LiangChengmei2,GaoYunkai1*(1.HainanInstituteforFoodControl,KeyLaboratoryofTropicalFruitsandVegetablesQualityandSafetyforStateMarketRegulation,Haikou570314;2.DepartmentofEnvironmentalScience,SchoolofTropicalMedicine,HainanMedicalUniversity,Hainan570000,China)Abstract:ObjectiveInordertocomprehensivelyevaluatethedetectionaccuracyof.enrofloxacininshrimp.MethodsEnrofloxacininshrimpwasdeterminedbyultra-performanceliquidchromatography-tandemmassspectrometry(UPLC-MS/MS).Eachuncertaintywasevaluatedthroughtheestablishedmathematicalmodels.ResultsThemainsourcesofmeasurementuncertaintieswerepreparationofstandardsolution,preparationofstandardcurveandinstrument.ConclusionThedeterminationresultsofenrofloxacininshrimpswere346.9μg/kgand1664.4μg/kg,theexpandeduncertaintywere48.8μg/kgand231.9μg/kg,respectively.Theresultswererepresentedas346.9±48.8μg/kg,1664.4±...