Performing Calibration of Transmittance by Single RGB-LED within the Visible Spectrum.

Area of Science:

• Environmental Science
• Analytical Chemistry
• Optical Engineering

Background:

• Spectrophotometry is crucial for non-invasive sewer pollution monitoring and environmental regulation compliance.
• Current spectrophotometry equipment faces challenges in cost, energy consumption, and portability due to incandescent lamps and optical elements.
• Developing affordable, low-power alternatives is essential for widespread, real-time sewer network monitoring.

Purpose of the Study:

• To explore RGB-LED technology as a viable, cost-effective alternative to incandescent lamps in spectrophotometry.
• To develop a simplified method for wastewater spectral analysis without complex optical components.
• To enable the creation of portable, low-consumption equipment for sewer system monitoring.

Main Methods:

• Developed a calibration procedure for using RGB-LEDs (510-645 nm) as a light source.
• Demonstrated a simplified method to model transmittance without optical elements like diffraction gratings.
• Utilized combinations of RGB colors to determine transmittance values for spectral analysis.

Main Results:

• Achieved high accuracy in spectrophotometric measurements using RGB-LEDs, validating them as an alternative to incandescent lamps.
• Successfully modeled transmittance values without optical elements, significantly reducing equipment cost and complexity.
• Demonstrated the viability of the RGB-LED based method for spectral analysis of wastewater.

Conclusions:

• RGB-LED technology offers a cost-effective and accurate solution for spectrophotometric analysis of wastewater.
• The developed method simplifies equipment design, paving the way for portable and affordable pollution monitoring in sewer networks.
• This research supports enhanced environmental monitoring capabilities for regulatory compliance.