Determination of As, Pb, Sn, Sb and Bi in High Temperature Iron and Nickel-Based Alloy by Graphite Furnace Atomic Absorption Spectrometry Combined with Liquid-Liquid Extraction
GUO Xing-jia1，2, XU Shu-kun1*,LI Xiao-zhou3,TONG Jian２, SUN Ying4, GUO Li-li4
1. Chemistry Department of Northeast University, Shenyang 110004, China 2. College of Chemistry Science and Engineering, Liaoning University, Shenyang 110036, China 3. The Center of Photoelectron and Laser-Biomedical Research, Shenyang Ligong University, Shenyang 110168, China 4. Institute of Metals, Chinese Academy of Sciences, Shenyang 110016, China
Abstract：A method was developed for the determination of As, Pb, Sn, Sb and Bi in high temperature iron and nickel-based alloy by graphite furnace atomic absorption spectrometry combined with liquid-liquid extraction. These elements formed complexes with I- ions and were subsequently extracted into MIBK to be separated from matrix elements. The effects of remnant matrix elements were studied in detail. Meanwhile, the interferences of other elements, such as W, Nb and Ta, were eliminated with masking method. The recovery rates for As, Pb, Sn, Sb and Bi are in the range of 93%-99 ％, and the relative standard deviations are from 8.8％ to 12％.
Key words：MIBK extraction;GFAAS;High temperature iron and nickel-based alloy;Masking method;As;Pb;Sn;Sb and Bi
郭兴家1，2,徐叔坤1*,李晓舟3,佟健2, 孙颖4,郭莉莉4 . 萃取分离-石墨炉原子吸收光谱法测定铁镍基高温合金中砷、铅、锡、锑、铋[J]. 光谱学与光谱分析, 2006, 26(06): 1167-1169.
GUO Xing-jia1，2, XU Shu-kun1*,LI Xiao-zhou3,TONG Jian２, SUN Ying4, GUO Li-li4 . Determination of As, Pb, Sn, Sb and Bi in High Temperature Iron and Nickel-Based Alloy by Graphite Furnace Atomic Absorption Spectrometry Combined with Liquid-Liquid Extraction . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1167-1169.
