杂多酸(蓝)分光光度法在测定痕量元素中的研究进展

Study on Applications of Heteropoly Acids (Blue) Spectrophotometry to Determination of Trace Elements

杂多酸能被还原为有颜色的杂多蓝,结合分光光度法,可对痕量元素进行准确的分析。目前,杂多酸分光光度法作为一种分析技术,具有精度高、操作简便、分析速度快等优点,在痕量分析领域得到了迅速发展。文章综述了杂多酸在测定痕量元素P,As,Si和V中的应用及研究进展。方法主要包括钼蓝法、杂多酸-碱性染料法、荧光分光光度法、流动注射分光光度法、原子吸收分光光度法、激光热透镜分光光度法等,并对这些方法进行了比较分析。

Heteropoly acids can be reduced to the pigmented heteropoly blue. Therefore a reliable method for determination of trace elements can be founded by association with spectrophotometry. At present, heteropoly acids spectrophotometry has made great progress in trace analytical field for its high accuracy, simple instruments and rapidity in detection. In the present paper, the application and research progress of heteropoly acids in the determination of trace elements （P, As, Si and V） are reviewed. The methods include the molybdenum blue method, the heteropoly-basic dye approach, fluorophotometry, the flow injection analysis, atomic absorption spectrophotometry, laser thermal spectrophotometry, etc. Finally, analysis and comparison of these methods are studied.