Fluorescein spectrofluorometric quenching detection of chloride and iodide using eight-Blue-LEDs excitation and dual solar cells

AI Insight

This study presents a fluorescence-based detection system for chloride (Cl⁻) and iodide (I⁻) ions using fluorescein as a fluorescent probe, with excitation provided by eight blue LEDs as a cost-effective light source. The system employs dual solar cells as photodetectors, measuring the quenching of fluorescein fluorescence in the presence of halide ions. The design offers a low-cost, portable alternative to conventional spectrofluorometric instrumentation for anion detection.

Why it matters

Accurate detection of chloride and iodide ions is relevant to water quality monitoring, clinical diagnostics, and food safety, and this approach could enable affordable field-deployable sensors in resource-limited settings.