火焰原子吸收法测定果汁中钠的影响因素及消除  

Determination of Sodium Influence Factor and Elimination in Fruit Juice by Flame Atomic Absorption Spectrometry

作　　者：张爱霞[1] 武景福[1] 武和平[1] 

机构地区：[1]三门峡市疾病预防控制中心,河南三门峡472000

出　　处：《中国卫生工程学》2008年第1期32-33,共2页Chinese Journal of Public Health Engineering

摘　　要：目的探讨火焰原子吸收法测定果汁钠的方法。方法果汁经硝酸-硫酸消化，加入保护剂、消电离剂等，选择钠元素次灵敏线火焰原子吸收法测定。结果本方法的线性范围为0～16ng／ml，检出限为0．22ng／ml，加标回收率为98．2％～103．3％，RSD〈3％。结论火焰原子吸收法选择次灵敏线，适用于果汁产品中钠离子测定。Objective To discuss flame atomic absorption spectrometry（FAAS） method to determine sodium in fruit juice. Methods The fruit juice after digested by the nitric acid - sulfuric acid, joined the protecting reagent, deionization reagent and so on, sodium element second sensitive hne was chose by FAAS. Results The linear range was 0 - 16 ng/ ml, the detection limit was 0.22 ng / ml, and the recovery was 98.2% - 103.3%, RSD was less than 3%. Conclusion FAAS is suitable for the determination of sodium ion in fruit juice.

关 键 词：火焰原子吸收法 果汁 钠 

分 类 号：R115[医药卫生—公共卫生与预防医学] O657.31[理学—分析化学]