悬浮液进样-火焰原子吸收光谱法测定藕粉中的钙、镁和铁  

Determination of Calcium,Magnesium and Iron in Arrowroot Flour by Suspension Sampling-Flame Atomic Absorption Spectrometry

作　　者：徐强[1] 谢妮[2] 陈庆阳[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,沈阳市110034 [2]中国医科大学,沈阳市110001 [3]沈阳师范大学实验中心,沈阳市110034

出　　处：《光谱实验室》2005年第6期1268-1270,共3页Chinese Journal of Spectroscopy Laboratory

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,镁和铁的含量。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,加标回收率Ca为97%—106%,Mg为87%—91%,Fe为92%—101%,相对标准偏差≤3.4%,方法简便,快速,准确。The arrowroot flour was suspended in agarsol and made into suspension for sampling, calcium, magnesium and iron in arrowroot flour were determined by flame atomic absorption spectrometry. Choice of suspension agent and elimination of interference were studied. The recoveries of standard addition for calcium, magnesium and iron are 97%-106%, 87%-91% and 92%-101%, respectively,with RSD≤3.4 %. 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 镁 铁 

分 类 号：O657.31[理学—分析化学]