Electrochemical study of zinc interactions with garlic sulfur ligands using differential pulse voltammetry
Year: 2025
Type: article
Abstract: Understanding the complexation behavior of metal ions with bio-derived ligands is crucial for developing sustainable strategies in environmental sensing and metal remediation. In this study, we explore the electrochemical interactions between zinc (II) ions and three major organosulfur compounds derived from garlic diallyl disulfide (DADS), dimethyl disulfide (DMDS), and diallyl sulfide (DAS) using differential pulse voltammetry (DPV). The interactions were characterized by distinct shifts in zinc peak potential and decreasing current intensities, indicating complex formation. Evolving factor analysis (EFA) revealed the presence of two primary electroactive species. Stability constants were calculated using a combined soft/hard modeling approach, including curve fitting and DeFord-Hume formalism, yielding log β₁ = 4.75 ± 0.41 (DADS), 5.23 ± 0.39 (DMDS), and 4.50 ± 0.50 and log β₂ = 8.23 ± 0.43 (DAS). These findings highlight the potential of natural sulfur ligands from garlic in modulating zinc bioavailability and open new avenues for the design of eco-friendly electrochemical sensors and bioinspired remediation systems.
Source: Discover Chemistry.
Author: Fatemeh Soleymani-Bonoti
Institution: Jundi-Shapur University of Technology
Language: English
Subfield: Electrochemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4417093379