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正确选择被测元素的分析线是原子吸收法的关键。对很多元素是容易找到所需要的最灵敏的分析线,而对另一些元素分析的选择就不那么容易,铅元素就是其中一个。理论上论述铅元素217.0nm分析线的灵敏度最高,在空气-乙炔火焰中,铅217.0nm分析线的灵敏度是0.3μg/ml 1%;而铅283.3nm分析线的灵敏度是0.5μg/ml 1%. 在实际工作中,我们使用的是充氖的铅元素空心阴极灯,虽然充氖的空心阴极灯比充氩的空心阴极灯
The correct choice of the analyte of the analyte is the key to atomic absorption spectrometry. For many elements it is easy to find the most sensitive analytical line you need, while it is less easy to choose from for other elemental analyzes. Lead is one of them. In theory, the sensitivity of the 217.0 nm analysis line of lead is highest, and the sensitivity of the 217.0 nm analysis line is 0.3 μg / ml 1% in the air-acetylene flame. The sensitivity of the lead 283.3 nm analysis line is 0.5 μg / ml 1% In actual work, we use the neon lamp hollow element of lead hollow cathode lamp, although the hollow neon lamp filled with argon than the hollow cathode lamp