论文部分内容阅读
1.引言 Pt、Pd、Ir、Rh的测定以往多用化学法、光谱法和极谱法。这些方法手续繁杂,应用不便。自1965年以来,原子吸收法测定铂族金属的报道日渐增多。但是,存在着多种金属离子特别是铂族金属本身相互干扰不易消除,加之灵敏度低等因素,使此法的应用受到限制。其中,Ir的火焰原子吸收法国内至今无报道,Pt的应用也少见。本工作选择合适释放剂及其用量,以达到消除金属离子干扰的目的。
1. Introduction The determination of Pt, Pd, Ir, Rh in the past by chemical methods, spectroscopy and polarography. These procedures are complicated and inconvenient to use. Since 1965, there has been a growing number of reports of platinum group metals determined by atomic absorption spectrometry. However, there are a variety of metal ions, especially the platinum group metal itself is not easy to eliminate interference with each other, combined with low sensitivity and other factors, the application of this method is limited. Among them, Ir flame atomic absorption method has been reported in the country so far, Pt is also rare. This work choose a suitable release agent and its dosage, in order to achieve the purpose of eliminating metal ions interference.