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+H...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 of0.9-37.5 ng/L, the relative standard deviation of each element is within 1.1%-4.8%, and the recovery of each element is 90%-108%.展开更多
建立电感耦合等离子体质谱(ICP-MS)法测定西洋参中B、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Mo、Cd、Sn、Sb、Ba、Hg、Pb共18种微量元素的分析方法。采用微波消解法消解样品后直接进行分析,应用碰撞/反应池(ORS)技术有效地消除了多...建立电感耦合等离子体质谱(ICP-MS)法测定西洋参中B、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Mo、Cd、Sn、Sb、Ba、Hg、Pb共18种微量元素的分析方法。采用微波消解法消解样品后直接进行分析,应用碰撞/反应池(ORS)技术有效地消除了多原子离子对待测元素的干扰,选用Sc、Y、In、Bi等元素为内标混合液校正基体干扰和漂移。方法的检出限为0.002～0.323μg/L,采用国家一级标准物质人参(GB W 10027)进行方法验证,结果准确可信。本法简便、快速,能满足西洋参中多种微量元素同时测定的分析需求。展开更多
基金Project(21271187)supported by the National Natural Science Foundation of ChinaProject(cstc2013jcyj A10088)supported by the Chongqing Natural Science Foundation,China+1 种基金Projects(2013FJ3093,2013SK3268)supported by the Science and Technology Project of Hunan Province,ChinaProject(KJZH14217)supported by Achievement Transfer Education in Chongqing,China
文摘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 of0.9-37.5 ng/L, the relative standard deviation of each element is within 1.1%-4.8%, and the recovery of each element is 90%-108%.
文摘建立电感耦合等离子体质谱(ICP-MS)法测定西洋参中B、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Mo、Cd、Sn、Sb、Ba、Hg、Pb共18种微量元素的分析方法。采用微波消解法消解样品后直接进行分析,应用碰撞/反应池(ORS)技术有效地消除了多原子离子对待测元素的干扰,选用Sc、Y、In、Bi等元素为内标混合液校正基体干扰和漂移。方法的检出限为0.002～0.323μg/L,采用国家一级标准物质人参(GB W 10027)进行方法验证,结果准确可信。本法简便、快速,能满足西洋参中多种微量元素同时测定的分析需求。
