砷的分析方法有比色分析法、原子吸收光谱法、气相色谱法、极谱法、中子活化分析法、X射线荧光分析法、微波激发等离子体和直流放电法、质谱法等。比色分析法准确可靠,并可作为其他测定方法测定结果的参照,因而各国微量砷的测试标准也多采用比色法。鉴于目前国内尚未有微量砷的比色分析法的综述性的报导,现将近十多年来所发表的各种主要的比色分析法加以综合整理,分述如下。 Arsenic analysis methods are colorimetric analysis, atomic absorption spectrometry, gas chromatography, polarography, neutron activation analysis, X-ray fluorescence analysis, microwave excitation plasma and DC discharge method, such as mass spectrometry. Colorimetric analysis is accurate and reliable, and can be used as a reference for determination of other determination methods, and therefore the test standard of trace arsenic in many countries also use colorimetric method. In view of the current domestic microaerodyne colorimetric analysis has not been reviewed, more than a decade has now published a variety of major colorimetric analysis to be consolidated, are as follows.