微波消解-GFAAS测定浅水湖泊底泥中重金属元素  

A microwave digestion method for determination of heavy metals in shallow lake sediments by graphite furnace atomic absorption spectrometry

作　　者：王毛兰[1,2] 赖劲虎[1,2] 倪妍[1,2] 周文斌[1,2] 

机构地区：[1]南昌大学鄱阳湖环境与资源利用教育部重点实验室,南昌330047 [2]南昌大学环境与化学工程学院,南昌330031

出　　处：《分析试验室》2012年第2期51-54,共4页Chinese Journal of Analysis Laboratory

基　　金：江西省教育厅科技项目(GJJ11283;GJJ09439);国际科技合作项目(2006DFB91920);国家重大水专项(2008ZX07526-008);国家自然科学基金项目(40672159)资助

摘　　要：探讨了采用微波消解作为底泥样品的前处理方法,运用石墨炉原子吸收法测定浅水湖泊底泥中Cu,Pb,Zn,Cd,Cr含量的实验条件。方法的RSD为2.0%～4.1%,平均回收率为97.4%～101.5%,Cu,Pb,Zn,Cd,Cr的检出限分别为0.4,5,2.8,0.25,2.5ng。该法适合于浅水湖泊底泥中重金属含量的测定。In this paper,a microwave digestion method was developed to determine the content of Cu,Pb,Zn,Cd and Cr in the sediments of shallow lake by graphite furnace atomic absorption spectroscopy.The relative standard deviations（RSDs） of the method was between 2.0% and 4.1%,and the recoveries obtained by standard addition method were between 97.4 % and 101.5%.The detection limits of Cu,Pb,Zn,Cd and Cr were 0.4,5,2.8,0.25,and 2.5 ng,respectively.The contents of the Cu,Pb,Zn,Cd and Cr were determined in the certified standard reference materials and the sediments of Poyang Lake by the method,and the results indicate that the proposed method had the advantages of simplicity,rapidness,low detection limit,high precision and accuracy.It is suitabled for the determination of the heavy metal concentrations in shallow lake sediments.

关 键 词：微波消解 原子吸收光谱法 浅水湖泊 底泥 重金属 

分 类 号：O657.3[理学—分析化学]