石墨消解火焰原子吸收法测定土壤中重金属  

Determination of heavy metals in soil by flame atomic absorption spectrometry using graphite digestion device

作　　者：杨敬坡[1] 罗建美[2] 逯飞 陈静 

机构地区：[1]河北科技大学环境科学与工程学院,河北石家庄050018 [2]石家庄经济学院土地资源与城乡规划学院,河北石家庄050031 [3]河北省环境科学研究院,河北石家庄050056 [4]石家庄市桥东污水治理工程筹建处,河北石家庄050030

出　　处：《河北科技大学学报》2014年第4期392-396,共5页Journal of Hebei University of Science and Technology

基　　金：河北省科技支撑计划项目(13273802D);河北省教育厅科技计划项目(QN2014155)

摘　　要：建立了石墨消解仪结合火焰原子吸收光谱仪测定土壤样品中铜、锌、镍、铬、锰5种元素的方法.经过对消解体系、样品消解量前处理条件进行优化,确定了最适合土壤消解的前处理步骤.各元素的检出限如下：Cu 0.62 mg/kg,Cr 0.48 mg/kg,Zn 0.45 mg/kg,Ni 0.53 mg/kg,Mn 0.50 mg/kg,回收率为96.5％～105％,精密度为0.8％～2.0％.This study established a method for determination of heavy metals such as Cu,Zn,Ni,Cr,and Mn in soil by flame atomic absorption spectrometry using graphite digestion device.A pretreatment process was confirmed after the pretreatment condition such as digestion system and amount of sample for digestion were optimized.The detection limits are 0.62,0.48,0.45,0.53 and 0.50 mg/kg forCu,Cr,Zn,Niand Mn,respectively.Recoveries are between 96.5％ and 105％.RSDarebetween 0.8％ and 2.0％.

关 键 词：石墨消解 火焰原子吸收 土壤 重金属 

分 类 号：O657.31[理学—分析化学]