摘要
利用HNO3–HClO4混合酸消解样品,采用氢化物发生–原子荧光光谱法测定牡蛎中镉的含量。在优化的仪器工作条件下,镉的质量浓度在0.20～1.50μg/L范围内与荧光强度呈良好的线性关系,线性相关系数为0.9992,检出限为0.10μg/L,测定结果的相对标准偏差为4.48%(n=12),加标回收率为94.3%～106.1%。测定了标准物质贻贝GB 08571中镉的含量,测定结果与标准值一致。该方法可满足牡蛎中微量镉的分析测定。
The sample was digested with HNO3-HC104, and cadmium in oyster was determined by hydride generation atomic fluorescence spectroscopy. On optimal conditions, the concentration of Cd had good linear relationship in the range of 0.20-1.50 μg/L, the correlation coefficient was 0.999 2, and the detection limits was 0.10 μg/L. The RSD was 4.48%（n=12）, the recoveries were 94.3%-106.1%. Cadmium content in mussel GB 08571 was determined, the determination resulut was in the range of standard value. The method is suitable for the determination of cadmium in oyster.
出处
《化学分析计量》
CAS
2013年第2期28-30,共3页
Chemical Analysis And Meterage
基金
广东省科技厅项目(2010B020313005)
关键词
氢化物发生
原子荧光光谱法
牡蛎
镉
hydride generation
atomic fluorescence spectrometry
oyster
cadmium
