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E‑Eye Detects Arsenic, Lead, Fluoride and E. coli in Water Sources
Researchers at IIT Guwahati develop a portable optical sensing device named E‑Eye for on‑site water quality checks. The device provides a low‑cost option for rural areas and supports detection of multiple contaminants in water sources.
E‑Eye Portable Optical Sensing Device:
| Dimension | Key Details |
|---|---|
| Detection | E‑Eye detects arsenic, lead, iron, chromium, fluoride, and Escherichia coli bacteria. |
| Cost | The device is priced at about ₹3,500, and each test costs around ₹2. |
| Technology principle | E‑Eye operates on the Beer‑Lambert law, combining optical sensing with digital electronics. |
| Mechanism | It uses a chemical reaction to produce coloured compounds, and colour intensity shows contaminant concentration. |
| Output | It converts readings into digital data and displays concentration. |
| Accuracy | It provides results comparable to UV‑Visible and Atomic Absorption spectrophotometers. |
| Deployment and data transmission | It provides for direct deployment at water sources and wireless transmission of results to treatment facilities. |
| Linkage with Jal Jeevan Mission | It supports safe tap water supply in rural households under the Jal Jeevan Mission. |
| Other testing uses | It applies to testing environmental and biological samples, vegetables, food products, tea, herbal products, soil, and milk. |
| Industrial monitoring | It authorises industrial checks of effluents containing heavy metals, bacteria, and odour‑causing compounds. |