等离子体质谱法与原子荧光光谱法测食品中砷、汞、硒、锑的方法比对

摘要

Set up a microwave digestion -inductively coupled plasma mass spectrometry and hydride a-tomic fluorescence spectrometry determination of arsenic,mercury,selenium,antimony in food.Digestion conditions,working conditions of the instrument was optimized by testing the inductively coupled plasma mass spectrometry and atomic fluorescence spectrometry as a method of comparison research,comparison of both linear range,accuracy,precision,etc.In the optimization of experimental conditions,the use of na-tional standards of material test and verify the reliability of the two methods and accuracy,measurements are according with the standard values.The results show that the two methods of high accuracy,good pre-cision and high sensitivity has a strong comparability,etc.%建立了微波消解—电感耦合等离子体质谱法与氢化物—原子荧光光谱法测定食品中砷、汞、硒、锑的方法。通过试验优化了消解条件、仪器工作条件，并对电感耦合等离子体质谱法和原子荧光光谱法进行对比研究，比较了两者的线性范围、准确度、精密度等。在优化了的实验条件下，利用国家标准物质验证两种方法的可靠性与准确度。结果表明，测定值均在标准值允许范围内，两种方法准确度高、精密度好、灵敏度高，具有很强的可比性等。