微波消解-等离子体发射光谱法测定野生山葡萄中的金属元素  

Determination of Heavy Metals in Wild Grapes by Microwave Digestion-ICP-AES

作　　者：肖振林[1] 刘玉静[1] 王敏[1] 

机构地区：[1]渤海大学化学化工学院环境科学系,辽宁锦州121000

出　　处：《食品科学》2011年第10期153-155,共3页Food Science

基　　金：辽宁省教育厅科学技术研究项目(2009A033)

摘　　要：对野生山葡萄样品采用HNO3-H2O2消解体系进行微波消解处理制样,用等离子体发射光谱仪(CIP-AES)同时测定野生山葡萄样品中Pb、Ni、Cu、Zn、Cd、As、Mo、Se、Ca、Mg、Al、Mn、Fe和K共14种金属元素的含量,该方法的加标回收率在95%～102.8%范围内,相对标准偏差(RSD)为0.28%～1.88%(小于2%),结果可靠,此方法消解样品快速、简便、完全。检测方法省时、准确可靠、精密度高,适用于同类样品金属元素含量的准确测定。An analytical method for the simultaneous determination of 14 heavy metal elements （Pb, Ni, Cu, Zn, Cd, As, Mo, Se, Ca, Mg, Al, Mn, Fe and K） in wild grapes was proposed using microwave digestion followed by inductively coupled plasma atomic emission spectroscopy （ICP-AES） measurement. Sample preparation was achieved by digestion with HNO3- H2O2 in a microwave system. The recoveries of the 14 elements from a sample from Benxi region, Liaoning province were obtained between 95% and 102.8%, with a relative standard deviation （RSD） of less than 2% ranging from 0.28% to 1.88% as reliable results. The method proposed in this study has the benefits of rapidity, simplicity, safety, time saving, and high accuracy and precision and also is suitable for determining heavy metal elements in similar samples.

关 键 词：野生山葡萄 微波消解 等离子体发射光谱法 金属元素 

分 类 号：O657.3[理学—分析化学] TS255.2[理学—化学]