乳浊液进样火焰原子光谱法测定螺旋藻中的微量元素  

Determination of trace elements in spirulina by emulsion sampling flame atomic spectrometry

作　　者：张起凯[1] 刘立行[1] 赵志芬[1] 

机构地区：[1]抚顺石油学院应用化学系,辽宁抚顺113001

出　　处：《中国药学杂志》2001年第7期476-478,共3页Chinese Pharmaceutical Journal

摘　　要：目的　用火焰原子光谱法快速测定螺旋藻中微量元素。方法　用 5 0 %硝酸溶液加热至沸溶解样品 ,再加入乳化剂聚乙二醇辛基苯基醚 (OP)溶液乳化不溶的油脂而制成浮浊液 ,用火焰原子吸收光谱法测定铁、镁 ,以火焰原子发射光谱法测定钙、钾。结果　工作曲线法的测定结果与消化法一致 ,相对误差小于± 2 .7% ,t检验表明本方法与消化法之间无显著性差异。结论　在火焰原子光谱法中 ,以乳浊液进样法测定螺旋藻样品可行的。方法简便、快速。OBJECTIVE: To rapidly determine the concentrations of the trace elements in spirulina by flame atomic spectrometry. METHODS: The boiling sample was dissolved in 50% nitric acid and a homogeneous emulsion was gained by adding emulsifier OP (i.e octyl polyethylene glycol phenyl ether) in order to emulsify non-soluble fat. FAAS was used to determine iron and magnesium, and FAES was used to determine calcium and potassium. RESULTS: The results of the working curve method were consistent with those obtained by digestion method. The relative error between them was less than ± 2.7%. The t-test showed that no difference was found between the two method. CONCLUSION: It is possible to determine the sample of spirulina by emulsion sampling method. This method is simple, rapid and accurate.

关 键 词：火焰原子光谱法 乳浊液进样 螺旋藻 微量元素 

分 类 号：R284.1[医药卫生—中药学]