【摘要】 目的建立电感耦合等离子体质谱(ICP-MS)法测定面制食品中铝含量的方法,探讨测定的主要干扰来源,并对面制食品加工中铝含量进行监测分析。方法样品经微波消解后,以钪作内标,补偿基体效应,用ICP-MS法测定监测样品中铝含量。结果方法最低检出浓度为0.03 mg/kg,回收率在92.0%～106.0%,测定结果相对标准偏差为2.15%～3.45%。结论本方法操作简单、分析速度快、检出限低、线性范围宽,适用于面制品中铝含量的测定。更多还原

【Abstract】 Objectives To establish a method for the determination of aluminum in flour food by inductively coupled plasma mass spectrometry(ICP-MS),to explore the main sources of interference,and monitor the concentration of aluminum in flour food.Methods After microwave digestion,the samples were detected for the content of aluminum by ICP/MS in the condition of 45Sc as the internal standard for eliminating matrix effect.Results The detection limit of aluminum was 0.03 mg/ kg.Recovery rates of spiked samples range from 92.0% to 106.0%,and RSD was 2.15%-3.45%.Conclusions This method has low detection limit,broad linear range with simple operation and quick analysis.It can be used for determining aluminum in flour food.更多还原