三唑稳定的荧光传感器用于茶叶和动物饲料中铜的高选择性检测。
Triazole-stabilized fluorescence sensor for highly selective detection of copper in tea and animal feed.
机构信息
Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China.
Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China.
出版信息
Food Chem. 2020 Jul 1;317:126434. doi: 10.1016/j.foodchem.2020.126434. Epub 2020 Feb 20.
A triazole-stabilized fluorescence sensor is developed for copper detection in the study. Tris-(benzyltriazolylmethyl)amine (TBTA) is used to improve the sensitivity and stability for the sensing system. A series of comparative experiments are performed with and without TBTA. In the presence of TBTA, the fluorescence decrease ratio is enhanced from 2.46 to 118.25; the detection limit is reduced from 67 nM to 3.6 nM; the higher selectivity toward copper compared to the other metal ions is verified, including K, Ca, Cd, Zn, Mg, Mn, Pb, Hg, Fe and Cr. Besides, the sensing system is successfully applied for copper determination in complex tea samples and chicken feed samples with the recovery range of 91.67-116.8%. A good consistency between the presented sensor and the flame atom absorbance spectrometry (FAAS) is confirmed by the low relative errors with the range from -2.39% to 7.02%.
研究中开发了一种三唑稳定的荧光传感器用于铜的检测。三（苯并三唑基甲基）胺（TBTA）用于提高传感系统的灵敏度和稳定性。进行了一系列有无 TBTA 的对比实验。在 TBTA 的存在下，荧光下降率从 2.46 增强到 118.25；检测限从 67 nM 降低到 3.6 nM；与其他金属离子相比，对铜具有更高的选择性，包括 K、Ca、Cd、Zn、Mg、Mn、Pb、Hg、Fe 和 Cr。此外，该传感系统成功应用于复杂茶叶样品和鸡饲料样品中的铜测定，回收率范围为 91.67-116.8%。通过低相对误差（范围为-2.39%至 7.02%），证明了所提出的传感器与火焰原子吸收光谱法（FAAS）之间具有良好的一致性。
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