悬浮液进样-火焰原子吸收光谱法测定藕粉中的钙和镁  

Determination of calcium and magnesium in arrowroot flour by suspension sampling-flame atmic absorption spectrometry

作　　者：李润国[1] 徐强[1] 代续宝[1] 

机构地区：[1]沈阳师范大学化学与生命科学学院,沈阳110034

出　　处：《食品科技》2006年第8期225-227,共3页Food Science and Technology

基　　金：辽宁省教育厅科学研究计划资助项目(科技攻关计划A类;项目号2004D238)

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,加入回收率Ca为97%￣106%,Mg为87%￣91%,相对标准偏差≤3.4%,方法简便,快速、准确。Suspension sampling technique was applied to flame atomic absorption spectrometry and was successfully used to determine calcium, magnesium in arrowroot flour. The arrowroot 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, magnesium, 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 镁 

分 类 号：TS207.3[轻工技术与工程—食品科学]