摘要
通过优化试验确定仪器的最佳工作参数,硝酸-过氧化氢微波消解样品,采用电感耦合等离子体原子发射光谱同时测定进口奶粉中的Fe、Zn、Ca、Mg、Cu多种金属元素含量.试验过程方便快捷,多种元素同时测定节约测定时间.方法的准确度、精密度均符合日常检验的需要.
This paper covers the simultaneous determination of Fe, Zn, Ca, Mg and Cu in the milk sample by inductively coupled plasma atomic emission spectrometry. The milk sample was digested under high pressure with nitric acid and hydrogen peroxide in the tightly sealed microwave system, which is under controlled through the advanced procedure, then the sample solution in the PTFE vessel was transferred to a 25mL volumetric flask after cooling. The above mentioned metal iron were determined simultaneously by inductively coupled plasma atomic emission spectrometry, in which the operation conditions were determined through optimum test. The process of test was not only simple but test time was saved due to amount element were determined at the same time. Precision test and recovery test indicated the results of test by this method is believable. The proposed method has been applied satisfactorily to the analysis of imported milk powder.
出处
《分析测试技术与仪器》
CAS
2004年第3期169-172,共4页
Analysis and Testing Technology and Instruments
关键词
奶粉
微波消解
电感耦合等离子体原子发射光谱
milk powder
microwave digesting
inductively coupled plasma atomic emission spectrometry
