论文部分内容阅读
ICP-AES法,目前使用的雾化进样方法,虽然已有十多种。但实际应用多是建立在气动或超声波雾化的基础上,其雾化效率分别为2—3%;8—20%。近年来光谱分析工作者在电热雾化技术方面取得了较大进展。其中,卤化剂的使用为高沸点元素雾化开拓了途径。D.L.Millard等使用镉测定了石墨棒法的雾化效率,其值可高达60%左右。如此高的效率,正是此种方法在检测限上比气动雾化法一般下降1—2个数量级的主要原因。
ICP-AES method, the current use of atomization injection method, although there are more than 10 kinds. However, the actual application is mostly based on aerodynamic or ultrasonic atomization, the atomization efficiency is 2-3% and 8-20% respectively. In recent years, spectral analysis workers have made great progress in electrothermal atomization technology. Among them, the use of halogenated agents for high boiling point atomization opens up the way. D.L.Millard and other cadmium determination using the graphite rod atomization efficiency, the value can be as high as 60%. Such a high efficiency, it is the main reason that this method is generally lower by 1-2 orders of magnitude than the detection limit.