镧锆涂覆石墨管的制备及其在测定地面水中痕量锰的应用

Preparation for Graphite Tube Coated With Lanthanum-Zirconium and Its Application for Determination of Trace Manganese in Ground Water

本文研究La和Zr混合溶液涂覆石墨管的方法,并将其和涂La石墨管在性能、工作条件进行多方面的比较。结果表明,La-Zr涂覆石墨管能够提高某些元素的测定灵敏度、灰化温度,稳定性和使用寿命。本文还研究了采用La-Zr石墨管测定地面水中痕量锰的分析条件及其他离子的干扰试验。

A method of the graphite tube coated with the mixed solution contaning both La and Zr was studied. Its working conditions were compared with those of graphite tube coated with La in many ways. The results show that the sensitivity of some elements, ash temperature, stability and life for use can be improved by graphite tube, coated with La-Zr.The conditions for the determination of trace Mn in ground water by this tube were also studied and interference of other ions was tested.