A Novel Electrochemical Strategy for Chloramphenicol Detection in a Water Environment Based on Silver Nanoparticles and Thiophene

Author:

Lin Qing-Min,Feng Xiao-Zhen,Chen Fang-Li,Song Ke-Hang,Han Guo-ChengORCID,Chen Zhencheng,Kraatz Heinz-BernhardORCID

Abstract

As a synthetic broad-spectrum antibiotic, chloramphenicol (CAP) is widely used in the prevention and treatment of bacterial diseases in aquaculture and animal husbandry, which might lead to severe water contamination and thus threaten our health. Herein, a novel electrochemical strategy for CAP detection is proposed that the sensor was successfully constructed based on the hardly mentioned anodic peak (about −0.56 V) by modifying silver nanoparticles (AgNPs) and thiophene (TP) on a glassy carbon electrode (GCE) as synergistic amplification unit with a simple step-by-step electrodeposition technique. Electrochemical methods, scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS) were applied to characterize the as-prepared sensor. The TP/AgNPs/GCE sensor was used for CAP detection by DPV in the concentration range of 100.0 − 1600.0 μM, the limit of detection (LOD) was 33.0 μM, and the sensitivity was 0.290 μμM−1·cm−2. In addition, the sensor has the advantages of simple preparation, low cost, good repeatability, stability and anti-interference. It has been used for the detection of CAP in lake water with a recovery of 101.80–104.85%, and the relative standard deviation (RSD) was lower than 1.22%, which confirms that the sensor has good practicability.

Funder

National Natural Science Foundation of China

Publisher

The Electrochemical Society

Subject

Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials

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