MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202641082744 A) filed by Vidyavardhaka College Of Engineering on July 06, 2026, for A Portable Optical Method For Heavy Metal Detection In Water.
Inventors include Dr. T P Surekha; Varsha P S; Sinchana M S; Shahid Shariff; and Saaim Khan M H.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: Arsenic contamination in water is a major environmental and public health concern, particularly in regions that depend on groundwater for drinking. Long-term exposure to arsenic can lead to serious health problems, including cancer and other chronic diseases. In this study, a simple and portable optical method was developed for the on-site detection of arsenic in water. The method uses chlorophenol red as a colour-sensitive reagent. When arsenic(III) reacts with Chlorophenol red in an acidic solution (pH 3), the colour changes from red to magenta and the intensity of this change increases with arsenic concentration. A portable sensing device was designed using a compact spectral sensor, a controlled light source and an ESP8266 microcontroller to measure absorbance in real time. Calibration results showed a strong linear relationship (R² 0.99) in the concentration range of 0.1-10ppm, with a limit of detection of 0.07ppm. The method was tested with laboratory-prepared, drinking and environmental water samples, showing good accuracy and recovery. This low-cost and rapid approach offers a practical solution for field-based arsenic monitoring and safe water management.
Disclaimer: Curated by HT Syndication.
