石墨炉原子吸收光谱法在痕量分析领域的应用进展  

Research progress in determination of trace elements by graphite furnace atomic absorption spectrometry

作　　者：那铎 郭莉莉[1] 李辉[1] 张重远[1] NA Duo;GUO Lili;LI Hui;ZHANG Zhongyuan(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China)

机构地区：[1]中国科学院金属研究所,辽宁沈阳110016 [2]中国科学技术大学材料科学与工程学院,辽宁沈阳110016

出　　处：《冶金分析》2021年第8期34-42,共9页Metallurgical Analysis

摘　　要：痕量物质的准确分析是控制重大风险的技术保障,对材料使役性能以及环境安全具有十分重大的现实意义。石墨炉原子吸收光谱法(GFAAS)利用被测元素原子蒸气状态对其原子共振辐射的吸收进行元素定量分析,操作便捷、灵敏度高,受到越来越多的关注。文章对GFAAS在痕量分析方面的应用进行了综述,包括原子化器中的程序升温过程、高分辨连续光源技术和化学基体改进技术等。随后,介绍了其在纳米材料痕量表征和金属材料痕量分析方面的应用,列出主要技术参数,并指出了石墨炉原子吸收光谱仪在分析方法建立和应用过程中还需解决的问题。同时,重点结合本课题组工作,整理了石墨炉原子吸收光谱法测定高温合金杂质的现行标准体系及应用进展。Accurate analysis of trace substances is a technical guarantee to control major risks,which is of great practical significance to use and service performance of materials as well as environmental safety.Graphite furnace atomic absorption spectrometry(GFAAS)has attracted much attention in recent years due to its advantages in simple operation and high sensitivity.This technique makes use of the absorption of atomic resonance radiation by testing elements in the vapor state for quantitative analysis.The application of GFAAS in analysis of trace elements were reviewed,including the heating program in atomizer,high-resolution continuum source and chemical matrix modification technology.Then its application in trace characterization of nano materials and trace analysis in metal materials were introduced.The main technical parameters were listed,and the problems in analytical method establishment and application of this instrument were pointed out.Moreover,focusing on the recent work in our research group,the current standard system and application progress of GFAAS in determination of impurity elements in superalloys were also reviewed.

关 键 词：石墨炉原子吸收光谱法(GFAAS) 痕量分析 纳米表征 原子化效率 高分辨连续光源 化学基体改进技术 

分 类 号：O657.31[理学—分析化学]