微波消解-石墨炉原子吸收光谱法测定植物染发剂中的铅镉铜  

Determination of Lead,Cadmium and Calcium in Plant Hair Dye by GFAAS with Microwave Assisted Sample Digestion

作　　者：张静[1] 王亦军[1] 王士霞[1] 

机构地区：[1]青岛大学化学化工与环境学院,山东青岛266071

出　　处：《分析测试技术与仪器》2010年第4期218-222,共5页Analysis and Testing Technology and Instruments

基　　金：‘青岛大学创新型教学实验室’项目资助

摘　　要：建立了微波消解-石墨炉原子吸收光谱法测定植物染发剂中重金属铅、镉和铜的方法.采用L9（34）正交设计讨论了固液比、消解剂体积比、消解时间和消解压力对样品消解效果的影响,最佳的消解条件：固液比（g/mL）为1∶12,HNO3/H2O2（V/V）为4∶1,消解时间为5min,消解压力1.5MPa.在最佳微波消解条件下,进行了精密度实验、回收率实验,相对标准偏差为1.05%~3.35%,回收率为96.67%~105.43%.微波消解法处理植物染发剂样品,试剂用量少、消解完全、快速、简便,而且测定结果的精密度、准确度较好.A method for the determination of Pb Cd and Cu in plant hair dye by GFAAS with microwave assisted sample digestion has been set up, using a L9（34） orthogonal experiment. Effects of the ratio of the sample to digestion solution, ratio of digestion solution, digestion time and digestion pressure were studied. Optimum digestion conditions are： sample/solution （g/ml） 1∶12, HNO3/H2O2 （V/V） 4∶1; digestion time, 5 min; and microwave pressure, 1.5 MPa. Under optimum digestion conditions, relative standard deviations were 1.05%～3.35%, average recoveries were 96.67%～105.43%. The results showed that the microwave digestion method is rapid and simple with low reagent consumption and complete digestion, and is of good accuracy and precision.

关 键 词：微波消解 石墨炉原子吸收光谱法 植物染发剂 PB Cd Cu 

分 类 号：O657.32[理学—分析化学]