AI Article Synopsis
- - An electrochemical sensor using molecularly imprinted polypyrrole nanotubes (MIPNs) has been created, specifically designed to detect glyphosate (Gly) with high sensitivity and specificity.
- - The MIPNs are made by shaping Gly recognition sites on the polypyrrole nanotubes, leading to quick absorption and strong interaction with Gly, and the sensor can detect Gly levels ranging from 2.5 to 350 ng/mL, with a very low limit of detection at 1.94 ng/mL.
- - This portable sensor has been successfully tested in real-world applications, such as detecting glyphosate in orange juice and rice beverages, demonstrating stability, reproducibility, and the ability
Article Abstract
An electrochemical sensor based on molecularly imprinted polypyrrole nanotubes (MIPNs) has been developed for the detection of glyphosate (Gly) with high sensitivity and specificity. Herein, the MIPNs are prepared by imprinting Gly sites on the surface of polypyrrole (PPy) nanotubes. The synthesized MIPNs have high electrical conductivity and exhibit rapid adsorption rate, enhanced affinity and specificity to Gly. An electrochemical sensor for Gly detection is fabricated by assembling MIPNs-modified screen-printed electrodes with a 3D-printed electrode holder, which is highly portable and suitable for real-time detection. The results demonstrate that the MIPNs-based electrochemical sensor for Gly exhibits a wide detection range of 2.5-350 ng/mL with a limit of detection (LOD) of 1.94 ng/mL. Besides, the Gly sensor possessed good stability, reproducibility, and excellent selectivity against other interferents. The practicability of the sensor is verified by detecting Gly in orange juice and rice beverages, indicating that the sensor is suitable for monitoring pesticides in actual food and environmental samples.
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| http://dx.doi.org/10.1016/j.bios.2021.113434 | DOI Listing |
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