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Arduino uno-based colorimetric sensor traction control system 3200 with AgNPs/PVP for Hg2+ detection in river water of Aceh Selatan Regency, Indonesia
 
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1
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala (USK), Banda Aceh 23111, Indonesia
 
2
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala (USK), Banda Aceh 23111, Indonesia
 
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Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala (USK), Banda Aceh 23111, Indonesia
 
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Department of Mechanical Engineering, Faculty of Engineering, Mercu Buana University, Jakarta 11650, Indonesia
 
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Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo, Kendari 93232, Indonesia
 
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Department of Geography Education, Universitas Al-Washliyah, Banda Aceh, 23111, Indonesia
 
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Doctoral Program of Agricultural Sciences, Postgraduate School, Universitas Syiah Kuala (USK), Banda Aceh 23111, Indonesia
 
 
Corresponding author
Khairi Suhud   

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala (USK), Banda Aceh 23111, Indonesia
 
 
J. Ecol. Eng. 2025; 26(4):45-58
 
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ABSTRACT
This study developed a colorimetric sensor using an Arduino Uno-based Traction Control System 3200 (TCS3200) color sensor and silver nanoparticles stabilized by polyvinyl-pyrrolidone (AgNPs/PVP) for detecting Hg(II) ions in river water samples from Aceh Selatan Regency. AgNPs/PVP exhibited localized surface plasmon resonance (LSPR) at 400 nm, with particles sized between 5.4 and 15.5 nm. Upon exposure to Hg2+, a visible color change indicated detection capability, with recovery rates of 97.3–100% and detection limits at 1.8 and 6 μg/L, respectively. Colorimetric results matched UV-Vis spectrophotometry, validating reliability. This efficient method provides a viable option for Hg2+ monitoring in environmental samples.
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