一种利用 Fe-MOF 的过氧化物酶样活性检测马拉硫磷的比色和电化学双输出的适 应传感器

IF 6.5 1区 农林科学 Q1 CHEMISTRY, APPLIED
Xu Yiwei , Jia Xupeng , Yang Sennan , Cao Mengrui , He Baoshan , Ren Wenjie , Suo Zhiguang
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引用次数: 0

摘要

开发了一种用于检测马拉硫磷的双输出灵敏度传感器。合成了 Fe-MOF,从而设计出有利于催化放大的信号探针。由于 Fe-MOF 具有出色的过氧化物酶样活性,因此可催化氧化还原反应,产生比色和电化学双输出。在这种传感策略中,马拉硫磷被传感界面上的适配体捕获,从而释放出信号探针。由于 Fe-MOF 的催化放大作用和适配体的高捕获效应,该适配体传感器对马拉硫磷产生了灵敏的响应。基于吸光度和电流的双重信号,开发出了从 10 纳克/毫升到 500 纳克/毫升的马拉硫磷检测方法。比色输出的马拉硫磷检测限为 5.8 纳克/毫升,电化学输出的检测限为 4.6 纳克/毫升。此外,该灵敏传感器在检测马拉硫磷方面具有很高的特异性和良好的重复性。最后,该传感器被用于检测水果和蔬菜样品中的马拉硫磷,回收率令人满意。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An aptasensor with colorimetric and electrochemical dual-outputs for malathion detection utilizing peroxidase-like activity of Fe-MOF

An aptasensor with dual-outputs was developed for malathion detection. Fe-MOF was synthesized to design favorable signal probes for catalytic amplification. Owing to the excellent peroxidase-like activity of Fe-MOF, the redox reaction was catalyzed to produce the dual-outputs of colorimetric and electrochemical. In this sensing strategy, malathion was captured by the aptamer on sensing interface, leading to the release of signal probe. Thanks to the catalytic amplification of Fe-MOF and the high capture effect of aptamer, the aptasensor produced a sensitive response for malathion. Based on the dual-signals of absorbance and current, the detection method for malathion was developed ranging from 10 ng/mL to 500 ng/mL. The detection limit of malathion was 5.8 ng/mL for colorimetric output and 4.6 ng/mL for electrochemical output. Furthermore, the aptasensor exhibited high specificity and good repeatability in malathion detection. Finally, the aptasensor was applied to detect malathion in fruit and vegetable samples with satisfactory recovery.

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来源期刊
Food Chemistry: X
Food Chemistry: X CHEMISTRY, APPLIED-
CiteScore
4.90
自引率
6.60%
发文量
315
审稿时长
55 days
期刊介绍: Food Chemistry: X, one of three Open Access companion journals to Food Chemistry, follows the same aims, scope, and peer-review process. It focuses on papers advancing food and biochemistry or analytical methods, prioritizing research novelty. Manuscript evaluation considers novelty, scientific rigor, field advancement, and reader interest. Excluded are studies on food molecular sciences or disease cure/prevention. Topics include food component chemistry, bioactives, processing effects, additives, contaminants, and analytical methods. The journal welcome Analytical Papers addressing food microbiology, sensory aspects, and more, emphasizing new methods with robust validation and applicability to diverse foods or regions.
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