单 位：
中国热带农业科学院分析测试中心海南省热带果蔬产品质量安全重点实验室
关键词：
双位加热消解法;原子吸收光谱;食品;元素
摘 要：
采用双位加热消解仪消解食品样品,用原子吸收光谱法测定样品中的铜、锰、锌、铁、铅、铬、镉元素含量并进行了空白值、消解温度、消解时间、硝酸回收率以及方法可靠性实验。结果表明:用此法消解样品具有实验的空白值低、精确度高、消解和除酸时间短等优点,大大提高了分析结果的准确性和分析效率,同时实验过程可回收大于70%的硝酸,减少了酸性挥发物质对大气环境的污染。
译 名：
Determination of Multiple Elements in Food by Double-Control Heating and Digestion-Atomic Absorption Spectrometry
作 者：
ZHAO Min;ZHOU Cong;DENG Aini;FAN Qiong;Analysis and Testing Center,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables,Chinese Academy of Tropical Agricultural Sciences;
关键词：
double-control heating and digestion;;atomic absorption spectrometer;;food;;element
摘 要：
After digestion of food samples with a double-control heating and digestion instrument,an atomic absorption spectrometer was used to measure the concentrations of various metal elements in the solution,including Cu,Mn,Zn,Fe,Pb,Cd,and Cr.To verify the scientificalness and reliability of the digestion procedure,analyses were performed on blank samples.Digestion temperature and time were optimized.Nitric acid recovery and the reliability of the proposed method were investigated.The results showed that this digestion method had the advantages of low baseline value,high accuracy and short time of digestion and deacidification,greatly improving the accuracy of analytical results and analysis efficiency.At the same time,more than 70% of nitric acid could be recovered during the analytical process,reducing air pollution.
