AAS法测定纯铼中痕量元素K试验研究

Test and Determination of Trace Potassium in Pure Rhenium by AAS

摘要: 用AAS法测定纯铼中的痕量元素K。通过优化原子吸收测量条件,研究了硝酸用量以及基体铼对测定K含量的影响,建立了AAS法测定纯铼中痕量元素K的分析方法。结果表明,AAS法测量K的相对标准偏差不大于9.04%,测定范围为0.0001%~0.001%,方法检出限为0.0035 μg/mL。本检测方法不仅准确可靠,而且简便快速。

Abstract: A method for the determination of trace K in pure rhenium by AAS has been developed. The measuring conditions of AAS have been optimized. The influences of the amount of HNO₃ and rhenium on the determination of K in pure rhenium have been investigated. The relative standard deviations of the results obtained by AAS method are lower than 9.04%, the appropriate concentration range is 0.000 1%~0.001% and the detection limit is 0.0035 μg·mL^-1. The method is not only accurate and reliable but also simple and rapid.