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铌酸锂晶体中掺入的钴、铬、铜和镍的量对晶体的物理性能有着重要的影响,因而对其进行准确地测定是很必要的。本文建立并比较了两种溶样方法对测定的影响;比较了标准石墨管和热解涂层石墨管对铬和镍灵敏度及基体对其测定干扰的影响;并探讨了基体对各元素测定的影响。建立了快速而准确的石墨炉原子吸收测定方法。试验部分一仪器与试剂 Perkin-Elmer-703型原子吸收分光光度计 HGA-500型石墨炉 AS-40自动进样器 PRS-10型数字打印机
The amount of cobalt, chromium, copper and nickel incorporated in the lithium niobate crystal has an important influence on the physical properties of the crystal, and therefore it is necessary to accurately measure it. In this paper, the influence of two dissolution methods on the determination was established and compared. The effects of graphite tube and pyrolytic graphite tube on the sensitivity of chromium and nickel and the influence of substrate on their determination were also discussed. influences. A rapid and accurate graphite furnace atomic absorption spectrometry method was established. Experimental Section I Instruments and Reagents Perkin-Elmer-703 Atomic Absorption Spectrophotometer HGA-500 Graphite Furnace AS-40 Autosampler PRS-10 Digital Printer