Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Smartphone Integrated Fluoride-specific Sensor for Rapid and Affordable Colorimetric Detection
Categories for this Invention
Technology: Smartphone type a real time fluoride detection.
Category: Environment Engineering
Industry: Water Quality Management.
Application: Aqueous samples and Dental care Products.
Market: The global market size of environmental technology was valued at USD 575 billion in 2022 and it is expected to hit USD 880 billion by 2032, growing at a compound annual growth rate (CAGR) of 4.40% from 2023 to 2032.
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Problem Statement
- Fluoride, a naturally occurring anion in groundwater, is crucial for tooth growth and bone maintenance but can cause dental and skeletal fluorosis.
- Exposure to F- can lead to kidney and acute gastric problems.
- Techniques like ion-selective electrodes, F NMR analysis, mass spectrometry, and colorimetric sensing have been developed for real-time water quality data collection.
- Nanomaterials like gold and CeO2 are used for aqueous F-removal and nanosensors.
- Simple, stable, sensitive, and selective systems are preferred for environmental and health-related monitoring.
Technology
- The detection of fluoride at sub-ppm levels in field samples in real time by using the smartphone-integrated sensor device.
- smartphone-integrated sensor device comprises;-
Key Features / Value Proposition
- A smartphone-based sensing platform has been developed for fluoride detection at sub-ppm levels in field samples in real time.
- Chemoresponsive organic dye is Xylenol Orange.
- The core is ceria and shell is zirconia.
- The study uses a collimated 565 nm LED for illuminating a sample and a photodiode for signal collection.
- The LED is a collimated 565 nm LED with luminous intensity of 700 mcd at 2.4 V.
- High performance in environmental water samples and dental care products.
- Do not uses any lens arrangement.
- High degree of sensitivity and specificity by using
- A mixture of near-cubic ceria-zirconia nanocages and chemo-responsive dye (xylenol orange)
- That one rapidly changes color from yellow to red upon interaction with fluoride down to sub-ppm levels.
- Spectral sensitivity in the region of 430-610 nm.
- Sensitivity range ( 0.1 to 5 ppm) of fluoride in field water samples.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Pradeep T
Department of Chemistry
Intellectual Property
- IITM IDF Ref. 2031
- Patent No: IN 536268
Technology Readiness Level
TRL-4
Experimentally validated in Lab