微波消解-氢化物发生-原子荧光法测定海蜇中的痕量砷和硒

建立了氢化物发生-原子荧光光谱法(HG-AFS)测定新鲜和腌制海蜇中痕量砷、硒的分析方法。采用冷冻干燥和微波消解相结合的方法处理样品，设定了最佳的样品处理条件和仪器测定条件，解决了消解液中过剩酸对测定的干扰问题，并对共存元素干扰情况进行了研究。利用加标回收试验，对分析方法进行了验证。实验结果表明，该方法具有简便、快速、灵敏、准确等特点，适合于含水量较高的生物样品的测定。

Determination of Trace Arsenic and Selenium in Jellyfish by Microwave Digestion-Hydride Generation-Atomic Fluorescence Spectrometry

A method of hydride generation-atomic fluorescence spectrometry was proposed in the present paper for the determination of trace arsenic and selenium in jellyf ish. The samples were treated by the combination of microwave digestion and lyo philization. The optimal conditions for treating and analyzing samples were esta blished. The problem of the effect of the superfluous acid in the digesting sol ution on the results was solved, and the influence of coexisting foreign ions on the determination of arsenic and selenium was investigated. The accuracy of the method was confirmed by the method of standard additions. This method proved to be simple, rapid and repeatable, and is suitable for the analysis of biologic s amples containing water.