4.6 Article

Nafion/Silver Nanoparticles as an Electrochemically Sensitive Interface for the Detection of Ractopamine in Pork Liver

Journal

ACS OMEGA
Volume 8, Issue 48, Pages 46252-46260

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsomega.3c07588

Keywords

-

Ask authors/readers for more resources

This study developed a simple and sensitive electrochemical sensor based on Nafion/silver nanoparticles modified glassy carbon electrode for detecting ractopamine in meat. The sensor exhibited suitable electrochemical sensing ability, with an extremely low limit of detection and high sensitivity. It also demonstrated satisfactory reproducibility and storage stability.
Many countries have allowed farmers to feed beta-adrenergic receptor agonists, such as ractopamine (Rac), to animals to improve the quality of their meat. However, Rac consumption can cause health problems for humans; thus, detecting Rac in meat before its packaging is essential. Consequently, this study developed a simple and sensitive electrochemical sensor by modifying a glassy carbon electrode (GCE) with Nafion/silver nanoparticles (Nafion/AgNPs). When this electrochemical sensor is used to detect Rac, electrostatic interaction occurs between Nafion and Rac, and the AgNPs oxidize Rac; thus, the accumulation and electrochemical sensing of Rac are achieved. Differential pulse voltammetry indicated that the as-prepared Nafion/AgNP-GCE sensor exhibited suitable electrochemical sensing ability under optimum conditions (6.0 mu L of 0.10% Nafion/AgNPs in a Britton-Robertson buffer solution with a pH of 1.8, an accumulation potential of -0.2 V, and a Rac accumulation duration of 300 s). Moreover, this sensor has an extremely low limit of detection and high sensitivity (1.60 x 10(-3) ppm and 2.14 mu A/ppm, respectively) in the Rac concentration range 7.50 x 10(-3)-1.00 ppm. The as-prepared sensor also exhibits satisfactory reproducibility and storage stability, with the corresponding relative standard deviations (RSDs) being 4.27% (n = 5) and 1.56% (n = 10), respectively. The proposed electrochemical sensor was successfully used to determine the Rac content in pig liver samples, with spiked recoveries of 95.2-101.8% and RSDs of 0.55-4.83% being achieved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available