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.
出处
《食品科技》
CAS
北大核心
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)
关键词
悬浮液进样
火焰原子吸收光谱法
藕粉
钙
镁
suspension sampling
flame atomic absorption spectrometry
arrowroot flour
Ca
Mg
