We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
电感耦合等离子体质谱法测定蛋白胨4种微量元素.
- Authors
张 寰; 高璐瑶; 郭 枝; 高 岩; 柳 青; 范 鑫; 朱叶青
- Abstract
Objective To establish a method for determination of trace elements Mn, Co, Cu and Mo in peptone by inductively coupled plasma mass spectrometry(ICP-MS).Methods After microwave digestion, cooling, acidified and constant volume, the samples were determined by KED mode.Mn, Mo, Co, Sc was determined by Sc, Rh, Cu and Ge as internal standards.Results Mn, Co, Cu and Mo showed good linear relationships in the concentration range of 0-50 μg/L with r2 greater than 0.996.The limits of detection of Mn, Co, Cu and Mo were 1.65, 0.06, 0.21 and 1.11 μg/L(n=10), respectively, the precision was 1.86%-3.67%, and the recovery was 89%-94%.The content of Mn, Co, Cu and Mo were 0.3-8.6 mg/kg, 0.01-1.9 mg/kg, 0.07-3.4 mg/kg, 0.4-11.3 mg/kg, respectively.Although the element content span was large, most of the sample elements were relatively concentrated.The average content of 4 elements was 1.0, 0.2, 0.4 and 0.8 mg/kg, and the content of Co, Cu in most peptones was higher than the average values.The content of Mn, Mo was lower than the average.Conclusion This method is simple, rapid and sensitive, which is suitable for the determination of peptone trace elements.The experimental data can provide data reference for peptone research.
- Publication
Journal of Food Safety & Quality, 2019, Vol 10, Issue 17, p5766
- ISSN
2095-0381
- Publication type
Article