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自从A.Walsh提出原子吸收分光光度(缩写AAS)法用于分析各种元素的可行性以来,该法的发展是非常迅速的,目前全世界各类原子吸收光度计已近五万台,每年发表的论文在千篇以上,还要举行一次国际性专业会议。现在AAS法已广泛应用于各个领域,可直接测定的元素近70种,其灵敏度通常可达0.01～1微克/毫升/1%。但是,还有许多元素不可能直接用AAS法进行测定,或者在一般条件下,其测定灵敏度太低,以致不适宜用该法进行测定,其原因主要是这些元素的共振
Since A. Walsh proposed the atomic absorption spectrophotometry (AAS) method for the analysis of the feasibility of various elements, the development of the law is very rapid. At present, there are nearly 50,000 types of atomic absorption spectrometers in the world, each year Published in more than a thousand papers, but also hold an international professional conference. Now AAS method has been widely used in various fields, the direct determination of nearly 70 kinds of elements, the sensitivity is usually up to 0.01 to 1 microgram / ml / 1%. However, there are many elements that can not be directly measured by the AAS method, or under normal conditions, the measurement sensitivity is too low, so unfit for the determination by this method, mainly because of the resonance of these elements