摘要
目的建立奶粉中5种营养元素的火焰原子吸收测定方法。方法利用微波消解处理样品，火焰原子吸收法测定奶粉中钙、镁、铁、锌、铜。结果方法检出限在0．050～0．11μgml，平均回收率为92．8％-103％，样品进行6次平行测定，RSD为0．56％～2．31％。结论方法具有快速、简便、灵敏、准确的优点，适于奶粉中5种营养元素的测定。
[ Objective ] To establish flame atomic absorption method for determining 5 nutritional elements in milk powder. [ Methods ] Microwave digestion was used to dispose the samples; flame atomic absorption method was applied to determine Ca, Mg, Fe, Zn and Cu milk powder. [ Results] The detection limit of this method was 0. 050 -0. 11 μg/ml; the average recovery rate was 92.8% -103% ;the RSD in the 6 determinations was 0. 56% -2.31%. [ Conclusion ] This method is rapid, simple sensitive and accurate; it is applicable for the determination of 5 nutritional elements in milk powder.
出处
《职业与健康》
CAS
2007年第22期2048-2049,共2页
Occupation and Health
关键词
火焰原子光谱吸收法
营养元素
奶粉
Flame atomic absorption method
Nutritional elements
Milk powder
