摘要
在邻二氮菲光度法测定金属元素含量的基础上,引入光谱峰面积技术,对微量铁进行定量测定。该方法检出限为0.076 mg/L,线性范围为0.45 mg/L^520 mg/L,样品回收率很高。本方法灵敏度较高,干扰较少,稳定性好,用于食品中微量铁的测定,避免了有关离子的干扰,提高了准确度。对于面粉、奶粉和肝等食品样品进行分析测定,结果令人满意。
In order to mensurate the certain amount of iron, I apply the spectrurrr--kurtosis technic on the basis of using orthophenanthroline spectroscopy, This method can avoid to be disturbed by oher ions and raise the accuracy. I have applied this method to analyse the sample of powdered milk, flour, liver etc, the process and result is satisfactory.
出处
《食品研究与开发》
CAS
北大核心
2008年第6期111-112,共2页
Food Research and Development
关键词
峰面积法
微量铁
邻二氮菲
Kurtosis technic
a trait of iron
orthophenanthroline
