Electrochemical study of zinc interactions with garlic sulfur ligands using differential pulse voltammetry
Discuss this preprint
Start a discussion What are Sciety discussions?Listed in
This article is not in any list yet, why not save it to one of your lists.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.
