氢化物发生-原子荧光光谱法同时测定镍基高温合金K417中痕量硒和碲  

Simultaneous Determination of Trace Sxelenium and Tellurium in Nickel-Based Superalloys K417 by Hydride Generation-Atomic Fluorescence

作　　者：张新平[1] 曹娟 魏江天[1] 孟昭武[1] 曹合欢 程玉欣 ZHANG Xinping;CAO Juan;WEI Jiangtian;MENG Zhaowu;CAO Hehuan;CHENG yuxin(Beijing Beiye Functional Materials Corporation,Beijing 100192)

机构地区：[1]北京北冶功能材料有限公司,北京100192

出　　处：《金属材料研究》2022年第4期28-31,共4页Research on Metallic Materials

摘　　要：要采用氢化物发生-原子荧光光谱法同时测定镍基高温合金K417中的痕量硒和碲。优化了灯电流、负高压、载气流量及屏蔽气流量等仪器参数,研究了镍基高温合金K417中主要成分Ni,Co,Cr对硒和碲含量测定产生的基体干扰情况,采用标准加人法消除主要基体元素的干扰。结果表明:在优化的仪器参数下,采用标准加人法对镍基高温合金标准物质中的硒和碲平行测定5次,测定值平均值均与标示值基本吻合,测得结果的相对标准偏差均小于8%(n=5),本实验方法硒检出限为0.42μg/g,碲检出限为0.23μg/g。该方法操作简单快速,且准确度较高,可用于镍基高温合金K417中痕量硒和碲的同时测定。Simultaneous determination of trace selenium and tellurium in nickel base superalloy K417 by hydride generation-atomic fluorescence spectrometry was studied.The instrument parameters such as lamp current,negative high pressure,carrier gas flow rate and shielding gas flow rate were optimized,and the matrix interference of Ni,Co and Cr on the determination of Selenium and tellurium contents in nickel base superalloy K417 was studied.The interference of the main matrix elements was eliminated by the standard addition method.The results show that under the optimized instrument parameters,the selenium and tellurium in the standard substance of nickel-based superalloy were determined by the standard addition method for five times in parallel.The mean values of the measured values are basically consistent with the labeled values,and the relative standard deviations of the measured results are less than 8%(n=5).The limits of selenium and tellurium detection were 0.42μg/g and 0.23μg/g respectively.The method is simple,rapid and accurate,and can be used for simultaneous determination of trace selenium and tellurium in nickel-based superalloys K417.

关 键 词：氢化物发生-原子荧光光谱法 镍基高温合金K417 硒 碲 基体干扰 

分 类 号：O65[理学—分析化学]