Green synthesis of paulownia flower-derived carbon dots for sensitive fluorescent detection of paclobutrazol

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-05-15 DOI:10.1016/j.foodchem.2025.144748

Yi Zhang , Ping Dong , Nina Sun, Xu Wang, Xinshuai She, Yongqian Xu, Qiongzi Wang, Yun Zhang

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Abstract

In this study, carbon dots derived from paulownia flowers (PF-CDs) were synthesized and utilized as a nanosensor for the highly sensitive detection of paclobutrazol (PBZ) pesticide residue. The study reports the first green synthesis of PF-CDs using biological waste from PF through a simple one-step hydrothermal method. PF-CDs exhibited exceptional photostability, low cytotoxicity, and excellent biocompatibility, making them suitable for biological applications. Moreover, PF-CDs exhibited excellent sensitivity for detecting PBZ pesticides. A strong linear correlation (R² > 0.99) was observed between the fluorescence intensity of PF-CDs and PBZ concentrations ranging from 0.78 to 18.75 μg/L. In real sample analysis, PBZ recovery rates ranged from 94.06 % to 108.56 %, with relative standard deviations between 0.35 % and 12.35 %. These results highlight the potential of PF-CDs for the accurate and reliable detection of pesticide residues. This study provides a sensitive method for PBZ detection, with implications for food safety and environmental monitoring.

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绿色合成泡桐花碳点用于多效唑的荧光检测

本研究合成了泡桐花碳点（PF-CDs），并将其作为高灵敏度检测多效唑（PBZ）农药残留的纳米传感器。该研究报告了第一个利用生物废物通过简单的一步水热法合成PF- cds的绿色方法。PF-CDs表现出优异的光稳定性、低细胞毒性和良好的生物相容性，使其适合生物应用。此外，PF-CDs对PBZ农药的检测具有良好的灵敏度。荧光强度与PBZ浓度在0.78 ~ 18.75 μg/L范围内呈良好的线性相关（R2 >； 0.99）。实际样品分析中，PBZ回收率为94.06 % ~ 108.56 %，相对标准偏差为0.35 % ~ 12.35 %。这些结果突出了pf - cd在准确可靠地检测农药残留方面的潜力。本研究提供了一种灵敏的多溴联苯检测方法，对食品安全和环境监测具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.