DOAJ Open Access 2025

Portable, Energy-Autonomous Electrochemical Impedance Spectroscopy (EIS) System Based on Python and Single-Board Computer

Jhon Alvaro Cuastuza Carlos Andrés Rosero-Zambrano

Abstrak

We develop a modular, wireless, solar- and battery-powered system for detecting chlorpyrifos (Lorsban<sup>TM</sup> 2.5% DP) in water using electrochemical impedance spectroscopy (EIS). The system integrates a Raspberry Pi Zero 2W for data processing, Python-based software (version 3.12.2), and a solar charge manager to power all components via a lithium-ion battery and solar panel. A commercial EmStat Pico Module and an amperometric biosensor with acetylcholinesterase (AChE) detect chlorpyrifos. Nine water samples with varying concentrations were tested using a 20 Hz–200 kHz frequency sweep and 15 mV excitation. Bode plots and statistical analyses confirmed statistically significant impedance variation as a function of chlorpyrifos concentration, validating the system as a portable, sensitive, and effective tool for environmental monitoring.

Topik & Kata Kunci

Engineering machinery, tools, and implements

Penulis (2)

Jhon Alvaro Cuastuza

Carlos Andrés Rosero-Zambrano

Format Sitasi

APA MLA BibTeX

Cuastuza, J.A., Rosero-Zambrano, C.A. (2025). Portable, Energy-Autonomous Electrochemical Impedance Spectroscopy (EIS) System Based on Python and Single-Board Computer. https://doi.org/10.3390/engproc2025087089

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.3390/engproc2025087089
Akses: Open Access ✓