Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors
Water pesticide contamination represents a major threat to ecological systems and public health, particularly in agricultural regions. Although conventional detection methods such as liquid chromatography and electrochemical analysis are highly accurate, they are expensive, require skilled operators...
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MDPI AG
2025-05-01
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| author | Min-Wei Hung Chen-Ju Lee Yu-Hsuan Lin Liang-Chieh Chao Kuo-Cheng Huang Hsin-Yi Tsai Chanchana Thanachayanont |
| author_facet | Min-Wei Hung Chen-Ju Lee Yu-Hsuan Lin Liang-Chieh Chao Kuo-Cheng Huang Hsin-Yi Tsai Chanchana Thanachayanont |
| author_sort | Min-Wei Hung |
| collection | DOAJ |
| description | Water pesticide contamination represents a major threat to ecological systems and public health, particularly in agricultural regions. Although conventional detection methods such as liquid chromatography and electrochemical analysis are highly accurate, they are expensive, require skilled operators, and cannot provide real-time results. This study developed a portable miniaturized electrochemical analysis platform based on cyclic voltammetry (CV) for rapid pesticide detection. The platform was compared with a commercial electrochemical analyzer and yielded similar performance in detecting chlorpyrifos at different concentrations. When ultrapure water was used as the background solution, the total area under the CV curve exhibited a linear correlation (<i>R</i><sup>2</sup> = 0.89) with the pesticide concentration, indicating its potential as a characteristic index. When molecularly imprinted polymers were added, the platform achieved a limit of detection of 50 ppm, with the area under the CV curve maintaining a logarithmic linear relationship (<i>R</i><sup>2</sup> = 0.98) with the pesticide concentration. These findings confirm the total area under the CV curve as the most reliable characteristic index for pesticide quantification. Overall, the proposed platform offers portability, straightforward operation, cost-effectiveness, and expandability, making it promising for on-site environmental monitoring. By incorporating GPS functionality, the platform can provide real-time pesticide concentration mapping, supporting its use in precision agriculture and water quality management. |
| format | Article |
| id | doaj-art-a16415b664314656a08224d7d2e16bca |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-a16415b664314656a08224d7d2e16bca2025-08-20T03:12:15ZengMDPI AGSensors1424-82202025-05-012510299910.3390/s25102999Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer SensorsMin-Wei Hung0Chen-Ju Lee1Yu-Hsuan Lin2Liang-Chieh Chao3Kuo-Cheng Huang4Hsin-Yi Tsai5Chanchana Thanachayanont6National Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Center for Instrumentation Research, National Institutes of Applied Research, Hsinchu 300092, TaiwanNational Metal and Materials Technology Center, Pathum Thani 12120, ThailandWater pesticide contamination represents a major threat to ecological systems and public health, particularly in agricultural regions. Although conventional detection methods such as liquid chromatography and electrochemical analysis are highly accurate, they are expensive, require skilled operators, and cannot provide real-time results. This study developed a portable miniaturized electrochemical analysis platform based on cyclic voltammetry (CV) for rapid pesticide detection. The platform was compared with a commercial electrochemical analyzer and yielded similar performance in detecting chlorpyrifos at different concentrations. When ultrapure water was used as the background solution, the total area under the CV curve exhibited a linear correlation (<i>R</i><sup>2</sup> = 0.89) with the pesticide concentration, indicating its potential as a characteristic index. When molecularly imprinted polymers were added, the platform achieved a limit of detection of 50 ppm, with the area under the CV curve maintaining a logarithmic linear relationship (<i>R</i><sup>2</sup> = 0.98) with the pesticide concentration. These findings confirm the total area under the CV curve as the most reliable characteristic index for pesticide quantification. Overall, the proposed platform offers portability, straightforward operation, cost-effectiveness, and expandability, making it promising for on-site environmental monitoring. By incorporating GPS functionality, the platform can provide real-time pesticide concentration mapping, supporting its use in precision agriculture and water quality management.https://www.mdpi.com/1424-8220/25/10/2999electrochemical sensorcyclic voltammetrymolecularly imprinted polymerpesticide detectionminiaturized devicecharacteristic index |
| spellingShingle | Min-Wei Hung Chen-Ju Lee Yu-Hsuan Lin Liang-Chieh Chao Kuo-Cheng Huang Hsin-Yi Tsai Chanchana Thanachayanont Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors Sensors electrochemical sensor cyclic voltammetry molecularly imprinted polymer pesticide detection miniaturized device characteristic index |
| title | Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors |
| title_full | Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors |
| title_fullStr | Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors |
| title_full_unstemmed | Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors |
| title_short | Custom-Designed Portable Potentiostat and Indirect Cyclic Voltammetry Index Analysis for Rapid Pesticide Detection Using Molecularly Imprinted Polymer Sensors |
| title_sort | custom designed portable potentiostat and indirect cyclic voltammetry index analysis for rapid pesticide detection using molecularly imprinted polymer sensors |
| topic | electrochemical sensor cyclic voltammetry molecularly imprinted polymer pesticide detection miniaturized device characteristic index |
| url | https://www.mdpi.com/1424-8220/25/10/2999 |
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