不同方法检测特殊医学用途婴儿配方食品中硒含量

采用GB 5009.93—2017《食品安全国家标准 食品中硒的测定》第一法（氢化物原子荧光光谱法）和GB 5009.93—2017第三法（电感耦合等离子体-质谱法）研究特殊医学用途婴儿配方食品中硒检测方法的适用性。7 家实验室分别对6 种特殊医学用途婴儿配方食品（包括3 类配方）和婴儿配方乳粉质控样品中的硒进行测定，同时测定回收率。结果表明：GB 5009.93—2017第一法和第三法均适用于婴儿配方乳粉的检测，在特殊医学用途婴儿配方食品中各种配方的适用性有待进一步研究。

Applicability of Different Methods for Determination of Selenium in Infant Formula Foods for Special Medical Purpose

In this study, the applicability of hydride generation atomic fluorescence spectrometry (HG-AFS) and inductively coupled plasma mass spectrometry (ICP-MS), methods I and III specified in the national standard GB 5009.93—2017, respectively to detect selenium in infant formula for special medical purposes was researched. Seven laboratories separately determined the selenium content in six samples of 3 types of infant formula for special medical purposes and infant formula quality control samples, and measured the recoveries. The results showed both methods were suitable for the determination of selenium in infant formula, while the applicability for various types of infant formula foods for special medical purposes needs to be further studied.