Journal article
Molecularly imprinted polypyrrole nanotubes based electrochemical sensor for glyphosate detection
Biosensors & bioelectronics, Vol.191, pp.113434-113434
11/01/2021
PMID: 34225056
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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Details
- Title
- Molecularly imprinted polypyrrole nanotubes based electrochemical sensor for glyphosate detection
- Creators
- Shichao Ding - Washington State UniversityZhaoyuan Lyu - Washington State UniversitySuiqiong Li - DL ADV Tech, Pullman, WA 99163 USAXiaofan Ruan - Washington State UniversityMingen Fei - Washington State UniversityYang Zhou - Washington State UniversityXiangheng Niu - Washington State UniversityWenlei Zhu - Washington State UniversityDan Du - Washington State UniversityYuehe Lin - Washington State University
- Publication Details
- Biosensors & bioelectronics, Vol.191, pp.113434-113434
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- 1R43ES031885-01 / National Institute of Environmental Health Sciences of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Environmental Health Sciences (NIEHS) WSU startup fund
- Identifiers
- 99901227642901842
- Language
- English
- Resource Type
- Journal article