ICP粉末进样装置的研究

A Device for Direct Introduction of Powder Sample Into an ICP

选用粉末粘附较少的有机玻璃为材料,设计一种恒速供样的粉末进样器。在氩气流与高频火花放电同时作用下,扬起粉末并送进等离子体,可获得试样组成不变的均匀进样。经合成标样试验表明:装样、进样过程,ICP 稳定,进样效率高,记忆效应小、方法精密度好。

A device for introducing powder into an ICP has been developed in which 20 mg of powder sample is mechanically fed at a constant rate into a small glass chamber and from there carried upward by an argon flow. A low-power high-frequency spark is incorporated in the chamber to separate the powder before it goes into the ICP torch. It was shown that the device had high sample injection efficiency,Low memory effect and the precision was fairly good.