Determination of impurity elements in MnZn ferrites by inductively coupled plasma mass spectrometry
来源期刊：中南大学学报(英文版)2015年第1期
论文作者：Zhang Ping(张萍) FU Liang(符靓) MA Jun-cai(马俊才) TANG You-gen(唐有根)
文章页码：37 - 42
Key words：inductively coupled plasma mass spectrometry (ICP-MS); MnZn ferrites; octopole reaction system (ORS); impurity elements
Abstract: An inductively coupled plasma mass spectrometry (ICP-MS) method was developed for the determination of Na, Mg, Al, K, Ca, Ti, Cr, Co, Ni, Cu, Ga, As, Mo, Ag, Cd and Pb in MnZn ferrites. The sample was digested by HNO3+HCl with microwave digestion followed by dilution with ultrapure water, then the above 16 impurity elements in the solution were analyzed directly by ICP-MS. The impurity elements were introduced by the helium gas or hydrogen gas into the octopole reaction system (ORS) to eliminate the polyatomic interferences caused by the high salty matrixes. The matrix effect was minimized through matrix matching, and Be, Y and Rh were used as internal standard elements. The working parameters of the instrument were optimized. The results show that the method has good precision and high accuracy. The detection limits for the investigated elements are in the range of 0.9-37.5 ng/L, the relative standard deviation of each element is within 1.1%-4.8%, and the recovery of each element is 90%-108%.
Zhang Ping(张萍)1, FU Liang(符靓)2, 3, MA Jun-cai(马俊才)4, TANG You-gen(唐有根)2
(1. College of Materials and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China;
2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
3. College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling 408100, China;
4. Chongqing shangjia Electronics Co., Ltd., Fuling 408100, China)
Abstract:An inductively coupled plasma mass spectrometry (ICP-MS) method was developed for the determination of Na, Mg, Al, K, Ca, Ti, Cr, Co, Ni, Cu, Ga, As, Mo, Ag, Cd and Pb in MnZn ferrites. The sample was digested by HNO3+HCl with microwave digestion followed by dilution with ultrapure water, then the above 16 impurity elements in the solution were analyzed directly by ICP-MS. The impurity elements were introduced by the helium gas or hydrogen gas into the octopole reaction system (ORS) to eliminate the polyatomic interferences caused by the high salty matrixes. The matrix effect was minimized through matrix matching, and Be, Y and Rh were used as internal standard elements. The working parameters of the instrument were optimized. The results show that the method has good precision and high accuracy. The detection limits for the investigated elements are in the range of 0.9-37.5 ng/L, the relative standard deviation of each element is within 1.1%-4.8%, and the recovery of each element is 90%-108%.
Key words:inductively coupled plasma mass spectrometry (ICP-MS); MnZn ferrites; octopole reaction system (ORS); impurity elements
