食品研究与开发
食品研究與開髮
식품연구여개발
Food Research and Development
2015年
17期
140-143
,共4页
淮山薯%微波消解%元素%电感耦合等离子体原子发射光谱法
淮山藷%微波消解%元素%電感耦閤等離子體原子髮射光譜法
회산서%미파소해%원소%전감우합등리자체원자발사광보법
Dioscorea alata Linn%Microwave digestion%elements%ICP-AES
采用硝酸-过氧化氢作消解液,微波消解法消解平坦淮山薯样品,用电感耦合等离子体原子发射光谱法(ICP-AES)同时测定样品中Zn、Pb、Cd、As、Ni、Fe、Mn、Mg、Cu、Ca等10种元素含量.结果表明:优化的消解剂用量为每0.5克淮山薯样品3 mL HNO3+2 mL H2O2; 方法的检出限为0.432μg/L~2.34μg/L,加标回收率为90.0%~105%,相对标准偏差RSD%为1.3%~8.9%.该方法适合同时测定山药中的多种元素,具简便、快速、稳定、准确等优点.平坦淮山薯中含有较高的人类所必需的微量元素,是营养价值极高的食用品.
採用硝痠-過氧化氫作消解液,微波消解法消解平坦淮山藷樣品,用電感耦閤等離子體原子髮射光譜法(ICP-AES)同時測定樣品中Zn、Pb、Cd、As、Ni、Fe、Mn、Mg、Cu、Ca等10種元素含量.結果錶明:優化的消解劑用量為每0.5剋淮山藷樣品3 mL HNO3+2 mL H2O2; 方法的檢齣限為0.432μg/L~2.34μg/L,加標迴收率為90.0%~105%,相對標準偏差RSD%為1.3%~8.9%.該方法適閤同時測定山藥中的多種元素,具簡便、快速、穩定、準確等優點.平坦淮山藷中含有較高的人類所必需的微量元素,是營養價值極高的食用品.
채용초산-과양화경작소해액,미파소해법소해평탄회산서양품,용전감우합등리자체원자발사광보법(ICP-AES)동시측정양품중Zn、Pb、Cd、As、Ni、Fe、Mn、Mg、Cu、Ca등10충원소함량.결과표명:우화적소해제용량위매0.5극회산서양품3 mL HNO3+2 mL H2O2; 방법적검출한위0.432μg/L~2.34μg/L,가표회수솔위90.0%~105%,상대표준편차RSD%위1.3%~8.9%.해방법괄합동시측정산약중적다충원소,구간편、쾌속、은정、준학등우점.평탄회산서중함유교고적인류소필수적미량원소,시영양개치겁고적식용품.
The ten microelements including Zn,Pb,Cd,As,Ni,Fe,Mn,Cu,Ca and Mg in Dioscorea alata Linn were analyzed by ICP-AES after yam was digested with nitric acid-hydrogen peroxide using microwave digestion.Experiment results showed that the optimal digesting reagent was 3 mL HNO3+2 mL H2O2 to treat 0.5 g yam.Detection limits and average recovery rates for the ten elements ranged between 0.432μg/L-2.34μg/L and 90.0%-105%,and RSD values varied between 1.3%-8.9%.ICP-AES represented a simple,rapid and accurate method for measuring trace element levels in Dioscorea alata Linn.Dioscorea alata Linn is rich in useful elements on the human's body,and with high nutritional value of food.
