【摘要】 研究了火焰原子吸收法测定加锌奶粉中微量锌的方法.在对仪器工作条件,共存离子干扰等的研究基础上,进行了相关指标的测定.在一定条件下,方法的特征浓度0.007μg·mL/1%,检出限0.005μg/mL,相对标准偏差2%,加标回收率96%～101%,线性范围0～1.4μg/mL.经用于样品分析,结果符合要求.更多还原

【Abstract】 The mehod of determining zinc in milk powder by is studied . The characteristic concentration is 0.007 μg /mL/1%,the detection limit is 0.005 μg/mL,the relative standard deviation(RSD) is 2%,the recovery rate is 96%～101% and the linear range of zinc is 0～1.4 μg/mL. The sample analysis results meet the requirements.更多还原