ICP-MS法快速测定葡萄酒中11种微量元素

Rapid determination of 11 trace elements in wines by inductively coupled plasma-mass spectrometry

目的:探讨葡萄酒中11种微量元素的测定方法。方法:以Sc、Ge、Y作内标,采用电感耦合等离子质谱法(ICP-MS)分别测定了不同产地葡萄酒中Mg、Ca、Fe、Mn等11种微量元素的含量。样品用1%硝酸稀释后直接测定。结果:方法的线性范围宽,线性相关系数均>0.999。测定试样中11种元素的相对标准偏差(n=7)均低于5.7%,各元素的加标回收率均在83.5%～104%。结论:方法操作简便、快速、灵敏、准确,不同产地的葡萄酒中均含有较丰富的微量元素。

Objective：To explore the method for determining 11 trace elements in wines. Methods： Wines were diluted 1：10 with 1% HNO3 and analyzed for 11 trace elements includiog Mg, Ca, Fe and Mn in different producing region wines by using inductively coupled plasma- mass spectrometry （ICP -MS） , elected internal standard including Sc, Ge and Y. Results： He experimental results showed the linear correlative coefficient for all elements are higher than 0. 999. Recoveries of spiked samples were in the range of 83.5% - 104% and precision was fine, RSD was lower than 5. 7%. Conclusion：It indicated that the method is simple, rapid, sensitive and accurate. All of the wines for the study have plenty of trace elements.