新型氢化物发生技术──可移动还原床氢化物发生器Ⅱ.干扰及其应用

A Novel Hydride Generation Technique\=Movable Reduction Bed Hydride Generator\= . Study of Interferences and Applications

新型的氢化物发生技术———可移动还原床氢化物发生器（ＭＲＢＨＧ）可以实现微升级样品的测定而不需要对样品进行酸化和使用气－液分离器。应用ＭＲＢＨＧ－电感耦合等离子体发射光谱取得了同等质量而不同形态的Ａｓ、Ｓｅ的相同信号强度，证明了在ＭＲＢＨＧ体系中氢化物元素之间的干扰得到消除，方法用于合金钢、富硒茶叶等实际样品的测定，标准加入的回收率在９３％～１１４％。

Some characteristics of the novel hydride generation systemmovable reduction bed hydride generator (MRBHG) is reported in this paper. Besides accomplishing the hydride generation at microliter sample volume without the need for an external addition of acid and use of a gasliquid separator, interferences among hydride forming elements are also greatly reduced in this system. The similar hydride generation efficiency for different valency and species of As and Se is obtained. The hydride forming elements in alloy steel and tea samples were determined by ICPAES with MRBHG system. The recoveries of standard addition for As and Se in alloy steels and a Chinese tea sample are 93%107% and 98%114% respectively.\=\=