电感耦合等离子体原子发射光谱法测定低合金钢中镧铈钇  

Determination of lanthanum,cerium and yttrium in low alloy steel by inductively coupled plasma atomic emission spectrometry

作　　者：余音宏[1,2] 曾庆平 陈文 罗迪强 冯小明[1] 赖朝彬 YU Yinhong;ZENG Qingping;CHEN Wen;LUO Diqiang;FENG Xiaoming;LAI Chaobin(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi Center of Quality Supervision and Inspection for Tungsten and Rare Earth Products,Ganzhou 341000,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]江西省钨与稀土产品质量监督检验中心,江西赣州341000

出　　处：《冶金分析》2023年第3期71-76,共6页Metallurgical Analysis

基　　金：江西省自然科学基金项目(20212ACB204008);江西省市场监督管理局科技项目(GSJK201901)。

摘　　要：在钢中添加适量的La、Ce、Y可以改善其性能,因此准确测定钢中La、Ce、Y具有重要意义。通过扫描电子显微镜分析表明,La、Ce、Y是以夹杂物的形式存在于钢中,且分布不均匀。首先使用王水溶解样品,选择La 408.672 nm、Ce 456.236 nm、Y 371.028 nm为分析线,建立了电感耦合等离子体原子发射光谱法(ICP-AES)测定低合金钢中La、Ce、Y的方法。结果表明,La、Ce、Y的质量浓度在0.10~10.00μg/mL范围内与其发射强度呈线性关系,线性相关系数均大于0.9999。方法中La、Ce、Y的检出限分别为0.00023%(质量分数,下同)、0.00015%、0.00018%,定量限分别为0.00076%、0.00051%、0.00061%。按照实验方法测定低合金钢样品中La、Ce、Y,结果的相对标准偏差(RSD,n=7)均小于5%,回收率为95%~110%。The performance of steel could be improved by adding proper amount of La,Ce and Y,so it is of great significance to accurately determine La,Ce and Y in steel.The analysis by scanning electron microscope(SEM)indicated that La,Ce and Y existed in steel in the form of inclusions with nonuniform distribution.The sample was dissolved with aqua regia,and a method for determination of La,Ce and Y in low alloy steel was established by inductively coupled plasma atomic emission spectrometry(ICP-AES)with La 408.672 nm,Ce 456.236 nm and Y 371.028 nm as the analytical lines.The results showed that the mass concentrations of La,Ce and Y in range of 0.10-10.00μg/mL had a good linear relationship with their corresponding emission intensity,and the linear correlation coefficients were greater than 0.9999.The limits of detection for La,Ce and Y were 0.00023%(mass fraction,similarly hereinafter),0.00015%and 0.00018%,respectively.The limits of quantification were 0.00076%,0.00051%and 0.00061%,respectively.The contents of La,Ce and Y in low alloy steel were determined according to the proposed method.The relative standard deviations(RSD,n=7)were all less than 5%,and the recoveries were between 95%and 110%.

关 键 词：电感耦合等离子体原子发射光谱法(ICP-AES) 低合金钢 镧 铈 钇 

分 类 号：O657.31[理学—分析化学] TF031[理学—化学]