痕量砷的形态分析方法研究进展

综述了近年来痕量As测定方法的研究进展，从分光光度法、原子吸收光谱法、氢化物-原子荧光光谱法、电感耦合等离子体法、X-射线荧光法、色谱分离技术与原子特征检测联用等6个方面介绍了目前有关痕量As分析方法的基本特点和应用实例，比较了各种方法的优缺点和适用范围。文章指出，痕量As的分析测定目前虽然已经取得很大进展，当已有方法真正涉及形态分析的不多，而且在实际分析应用中存在设备昂贵难以推广等缺点。今后的发展方向应该是，进一步深入研究各种高效的痕量As分离技术，实现对各种形态痕量As的直接、快速、高选择性的分离和分析，同时，各种现代分析技术的联用测定痕量As将是今后发展的重点方向之一。

Recent Development of Speciation Analysis for Trace Arsenic

The present paper summarizes recent development in the measurements of trace arsenic element,including six aspects such as spectrophotometry,atomic adsorption spectrometry,hydride generation atomic fluorescence spectrometry,inductively coupled plasma-atomic emission spectroscopy,X-ray fluorescence spectrometry,united detection of chromatography-atomic characteristic and so on.The basic characteristics and application fields of each method are introduced.The advantages and disadvantages of different methods are discussed.It is pointed out that great progress has been made for the measurements of trace arsenic element in the past decades,but studies on speciation analysis of trace arsenic are still limited. For various speciation of trace arsenic in nature,how to find and develop various efficient,selective separation and analysis technologies is one of the most important problems to be considered.More attention should be paid to the united application of different modern analysis technologies for trace arsenic.