莱克多巴胺
检出限
化学
水溶液
金属
橙色(颜色)
肉眼
多巴胺
制作
比色法
无机化学
核化学
色谱法
有机化学
医学
替代医学
食品科学
病理
神经科学
生物
作者
Xixin Duan,Zhixian Bai,Xianzhao Shao,Jian Xu,Ning Yan,Junyou Shi,Xiaohong Wang
出处
期刊:Materials
[MDPI AG]
日期:2018-04-26
卷期号:11 (5): 674-674
被引量:22
摘要
A novel colorimetric detection method based on the peroxidase-like activity of metal-substituted polyoxometalates (POMs) of SiW₉M₃ (M = Co2+, Fe3+, Cu2+, Mn2+) has been established. POMs can catalyze oxidation of dopamine (DA) and ractopamine (RAC) by H₂O₂ in aqueous solutions. SiW₉Co₃-based POMs detect DA at concentrations as low as 5.38 × 10−6 mol·L−1 simply by observation of the color change from colorless to orange using the naked eye. RAC is detected by observing the change from colorless to slight red by SiW₉Cu₃ with a detection limit of 7.94 × 10−5 mol·L−1. This study shows that colorimetric DA and RAC detection using SiW₉Co₃ and SiW₉Cu₃ is highly selective and sensitive as well as visually observable.
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