论文部分内容阅读
本文在基础上介绍一种固体粉末进样装置及测定方法。其特点是。设计了射流管进样器,利用射流的卷吸扩展作用使粉末样品经气动雾化而被卷吸直接引入等离子炬,通过将样品粒度加细的途径解决了粉末粒子在炬中充分蒸发的问题,提高了难蒸发元素的准确度。 分析时,样品与缓冲剂按比例混匀,取混合样一次摄谱(所需纯样品量为3.33毫克),可同时测定锆、铌、镧、钇、钡、锶、铬、镍、钒、硼、钴、钛、铜、铅、铍十五项元素,检出限除钡、锶、钛、硼略高,其它元素均为ppm级。
Based on the introduction of a solid powder sampling device and measurement methods. Its characteristic is. The design of the jet pipe injector, the use of jet entrainment expand the role of the powder sample by air atomization was entrained directly into the plasma torch, the sample particle size finer way to solve the problem of powder particles in the torch fully evaporated , Increasing the accuracy of difficult-to-evaporate elements. In the analysis, the sample and the buffer are proportionally mixed, and the mixture is sampled once (the required pure sample amount is 3.33 mg) to simultaneously measure the contents of zirconium, niobium, lanthanum, yttrium, barium, strontium, chromium, nickel, vanadium, Boron, cobalt, titanium, copper, lead, beryllium fifteen elements, the detection limit in addition to barium, strontium, titanium, boron slightly higher, the other elements are ppm level.