悬浮液进样-火焰原子吸收光谱法测定藕粉中的钙和铁  

Determination of Calcium and Iron in Lotus Root Flour by Suspension Sampling - flame Atmic Absorption Spectrometry

作　　者：徐强[1] 谢妮[2] 李润国[1] 李国德[3] 

机构地区：[1]沈阳师范大学化学与生命科学学院,辽宁沈阳110034 [2]中国医科大学,辽宁沈阳110001 [3]沈阳师范大学实验中心,辽宁沈阳110034

出　　处：《食品科学》2006年第6期190-191,共2页Food Science

摘　　要：将悬浮液进样技术应用于火焰原子吸收光谱法,测定了藕粉中的钙、铁含量。将藕粉悬浮于琼脂胶体中制成悬浮液,直接喷入空气-乙炔火焰,用标准加入法测定钙和铁的加入回收率分别为97%～106%、92%～101%,相对标准偏差≤3.4%,方法简便、快速、准确。In this article, the suspension sampling technique applied to flame atomic absorption spectrometry was successfully used to determine calcium, iron in lotus root flour.The flour was suspended in agarsol and made into suspension.Choice of suspension agent and elimination of interference were studied.The test solution was injected into air-acetylene flame to determine calcium and iron by standard addition method.This method is convenient rapid and accurate.

关 键 词：悬浮液进样 火焰原子吸收光谱法 藕粉 钙 铁 

分 类 号：O657.31[理学—分析化学]