Determination of Impurity Elements in High-Purity Aluminium Using Inductively Coupled Plasma-Mass Spectrometry after Matrix Extraction and Separation
XIE Hua-lin1,NIE Xi-du1,LI Li-bo2
1. Department of Chemical Engineering, Hunan Institute of Technology, Hengyang 421008, China 2. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Abstract：To establish the method for the determination of 7 trace impurity elements including Co, Ni, Cu, Mo, Cd, Pb and Bi in high-purity aluminium by inductively coupled plasma-mass spectrometry (ICP-MS), the impurity elements were extracted from the aluminium matrix in the form of chelates with ammonium pyrrolidine dithiocarbamate (APDC) into methyl isobutylketone (MIBK). The instrument parameters, and conditions of separation and interference of matrix were discussed in detail. The optimal detection conditions were determined. The detection limits range from 0.011 to 0.052 μg·L-1 depending on the elements, recoveries of samples are in the range of 92.2%-103.0%, and the precision is RSD＜2.3%. This method is accurate, quick and convenient. It is used in the determination of impurity elements in high-purity aluminium with satisfactory results.
谢华林1,聂西度1,李立波2 . 萃取分离-电感耦合等离子体质谱法测定高纯铝中的杂质元素[J]. 光谱学与光谱分析, 2007, 27(01): 169-172.
XIE Hua-lin1,NIE Xi-du1,LI Li-bo2. Determination of Impurity Elements in High-Purity Aluminium Using Inductively Coupled Plasma-Mass Spectrometry after Matrix Extraction and Separation. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 169-172.
