氢化物——火焰原子吸收法测定食品中的铅  

Determination of Lead in Food by Hydride Generation-Flame Atomic Absorption Spectrometry

作　　者：尹哲俊[1] 杨晓瑛 王颖[1] 

机构地区：[1]吉林工学院轻纺工程系

出　　处：《吉林工学院学报（自然科学版）》1991年第3期58-61,共4页Journal of Jilin Institute of Technology

摘　　要：本文按文献提供的设计图型制造喷流型氢化物发生器,应用空气—乙炔火焰原子吸收法在(HCl—H_2C_2O_4—K_3〔Fe(CN)_6〕体系中,测定多种食品中微量铅。研究结果表明,方法的灵敏度比火焰法灵敏度提高近20倍,测定结果令人满意。A hydride generator of the spray type has been installed based on a schematic design in the literature. The trace contents of lead in many kinds of food were determined in the HCl-H2C2O4-K3[Fe(CN)6] system by hydride generation -flame atomic absorption spectrophotometry. The sensitivity of the method is 0. 012μg/ml/1 % absorption,the linear range lies in 0. 0 to 0. 6μg/ml, and the relative standard deviation is less than 5%. Recovery rates for standard addition in various food samples are between 96. 3% and 102. 6%.

关 键 词：铅 火焰原子吸收法 喷流型氢化物发生器 食品检测 含量测定 氧化剂 

分 类 号：TS207.51[轻工技术与工程—食品科学]