摘要
目的：建立同时测定保健食品中有机硒和无机硒含量的方法。方法：用硝酸-高氯酸混合酸体系将样品中的有机硒氧化成无机硒后测定总硒含量,同时用酸提取样品中的无机硒,再通过差减法获得有机硒的含量。结果：经回收实验和实际样品检测,方法的回收率为95.0%~105.6%,RSD为2.5%~4.9%。结论：该方法线性范围宽,相关性好,精密度和准确度好,可操作性强,应用范围广,具有较高的实用价值。
Objective：To establish a method for simultaneous detection of the organic selenium and the inorganic selenium in the health foods.Methods： Determines the total selenium conten after oxidation of organic selenium into inorganic selenium in the sample with nitric acid-perchloric acid mixed acid system,simultaneously with the acid extraction the inorganic selenium in the sample,obtains the organic selenium content through the subtraction method.Results：After the recovery experiment and the actual sample examination,the recovery rate was 95.0%~105.6%,RSD 2.5%~4.9%.Conclusion：This method has a wide linear dynamic range,good precision and accuracy,and has a high practicale value.
出处
《中国卫生检验杂志》
CAS
2010年第4期767-768,839,共3页
Chinese Journal of Health Laboratory Technology
关键词
保健食品
有机硒
无机硒
Health foods
Organic selenium
Inorganic selenium
