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Highly selective and flexible silver nanoparticles-based paper sensor for on-site colorimetric detection of paraquat pesticide.
- Source :
-
RSC advances [RSC Adv] 2024 Sep 10; Vol. 14 (39), pp. 28844-28853. Date of Electronic Publication: 2024 Sep 10 (Print Publication: 2024). - Publication Year :
- 2024
-
Abstract
- Paper-based sensors or paper-based analytical devices (PADs) have recently emerged as the cost-efficient, and portable, on-site detection tools for various biological and environmental analytes. However, paper-based sensors often suffer from poor selectivity. Here, a single-step paper-based flexible sensor platform has been developed for the on-site detection of paraquat (PQ) pesticide in real samples, utilizing chitosan and citrate-capped silver nanoparticles integrated with a flexible paper. The nanocomposite paper film was thoroughly characterized using UV-visible spectroscopy, Fourier-transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The composite paper platform demonstrated a color change with a reaction time within a few minutes (6-7 min) in the presence of PQ pesticide. The trace level PQ pesticide has been detected with a limit of detection (LOD) of 10 μM and a linear range (LR) of 10-100 μM. The sensor shows 3× more selective signal towards PQ pesticide compared to other similar pesticides. The relative standard deviation (RSD) was found to be 5% for repeatability, 4% for reproducibility, 2% for interference, and 3.5% for real sample analysis, indicating high precision sensing and within the WHO limit of RSD (20%). The present work will open up new avenues for the advancements in flexible paper sensors; cost-effective, portable, on-site sensors, and sustainable device development.<br />Competing Interests: The authors have no conflicts of interest to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 14
- Issue :
- 39
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 39257667
- Full Text :
- https://doi.org/10.1039/d4ra04557b