ICP-MS法同时测定涉水材料浸泡水中的11种元素  

Determination of Eleven Elements in Water-Touched Material by ICP-MS

作　　者：吕琳琳[1] 徐烨[1] 伊萍[2] 曲宁[2] 顾鑫荣[1] 

机构地区：[1]东北大学理学院,辽宁沈阳110004 [2]辽宁省疾病预防控制中心理化检验科,辽宁沈阳110005

出　　处：《光谱学与光谱分析》2006年第3期548-550,共3页Spectroscopy and Spectral Analysis

摘　　要：研究了用电感耦合等离子体质谱法（ICP-MS）对涉水材料浸泡水中的11种元素Ag，As，Ba，CA，Cu，Sb，Sn，Mn，Ni，Pb和Hg进行同时测定的方法。优化了ICP—MS的工作参数：RF功率为1350W、冷却气流量为13L·min^-1、辅助气流量为0．70L·min^-1、载气流量为0．8L·min^-1、雾化气流量为1．02L·min^-1、样品提升速率为1．48mL·min^-1。11种元素的检出限在0．003～0．170μg·L^-1之间，相对标准偏差（RSD）（n=6）均小于7％，回收率均在92．4％～108．2％之间。该方法用于涉水材料浸泡水中元素的测定，结果令人满意。Water-touched material include water distribution equipment, protecting materials, and water treatment material. The security of the material plays an important role in everyone＇ s daily life. So it＇ s necessary to determing metal elements in the material. A method for the determination of eleven elements, including Ag, As, Ba, Cd, Cu, Sb, Sn, Mn, Ni, Pb and Hg, in the water-touched material by inductively coupled plasma-mass spectrum（ICP-MS） is described. The plasma parameters were optimized as follows： The RF input power was 1 350 W; flow rate of cooling gas was 13L·min^-1 ; flow rate of assistant gas was 0. 70L·min^-1 ; flow rate of carrying gas was 0. 8 L·min^-1 ; flow rate of atomization gas was 1.02 L·min^-1 ; rate of sampiing was 1.48 mL·min^-1. The detection limits of these eleven elements were 0. 003-0. 170 μg·L^-1. The relative standard deviations（n= 6） were 0. 6%-6. 3%. The correlation coefficients were 0. 999 0-0. 999 6. The recoveries of the method were 92. 4%-108. 2%. This method is sensitive, accurate and simple compared with other methods, and has the advantage of wide linear range. The results were satisfactory.

关 键 词：ICP-MS 涉水材料 浸泡水 

分 类 号：O657.3[理学—分析化学]