低压离子色谱测定稀土硫酸溶液中氟含量的样品预处理方法研究

The Study on Pre-treatment Methods of the Determination of Fluorine in the Sulfuric Acid Solution Containing Rare Earth by Low-pressure Ion Chromatography

研究了稀土硫酸溶液中氟含量的低压离子色谱测定时样品的预处理方法 .结果表明 :KOH沉淀 加掩蔽剂的预处理方法能消除稀土硫酸溶液中诸多阴、阳离子对氟测定的影响 ,使处理后的样品谱图简单、清晰 。

In this paper, the pre-treatment method of the sample has been discussed when the fluorine in the sulfuric acidsolution containing rare earth is determined by low-pressure ion chromatography. Through the experiment research, we have found a new method that HY and C 6H 8O 7·H 2O are added to the solution after the solution is treated by KOH solution. It shows that the method can remove many of anions, cations in the solution thatinterfere with the determination of fluorine, and the sampl's spectrum is briefand clear-out.