基于富勒酸保护的金纳米粒子的孔雀石绿比色测定法

IF 2.2 4区 化学 Q2 Engineering Chemical Papers Pub Date : 2024-09-22 DOI:10.1007/s11696-024-03704-y
Jinxiu Guo, Tao Kong, Huaijie Zhang, Runtian Ma, Zijun Ma, Bing Hu
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引用次数: 0

摘要

开发快速灵敏的孔雀石绿(MG)检测方法对于食品安全监管和生态保护尤为重要。以富勒烯酸(FA)为稳定剂,NaBH4为还原剂,成功制备了平均粒径为5-20 nm的椭圆形金纳米粒子(AuNPs)。基于富勒酸保护金纳米粒子(FA-AuNPs)与 MG 的相互作用,观察到 FA-AuNPs 的颜色由宝石红色变为蓝色,并研究了金纳米粒子在 611 nm 和 529 nm 处相应的吸光度比值变化(A611/A529)。通过优化实验条件,建立了 A611/A529 与 MG 浓度的线性关系。该方法的检出限和线性范围分别为0.02 μM和0.04-2 μM。该方法成功地检测了三种不同水样中的孔雀石绿,回收率为97.4-110.8%。
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Colorimetric determination of malachite green based on gold nanoparticles protected by fulvic acid

The development of rapid and sensitive malachite green (MG) detection methods is particularly important for food safety supervision and ecological protection. Using fulvic acid (FA) as a stabilizer and NaBH4 as a reducing agent, ellipsoidal gold nanoparticles (AuNPs) with the average particle size of 5–20 nm were successfully prepared. Based on the interaction between fulvic acid protected gold nanoparticles (FA-AuNPs) and MG, the color change of FA-AuNPs from ruby red to blue was observed, the corresponding absorbance ratio change of gold nanoparticles at 611 nm and 529 nm (A611/A529) was also studied. Through the optimization of experimental conditions, the linear relationship between A611/A529 with the concentration of MG was established. The detection limit and linear range of this method were 0.02 μM and 0.04–2 μM, respectively. This method was successfully applied to detect malachite green in three different water samples with the recovery of 97.4–110.8%.

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来源期刊
Chemical Papers
Chemical Papers Chemical Engineering-General Chemical Engineering
CiteScore
3.30
自引率
4.50%
发文量
590
期刊介绍: Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.
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