Is This New Pocket-Sized Sensor Capable of Detecting Asthma and Lung Damage Caused by Sulphur Dioxide?
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Synopsis
Discover how a breakthrough sensor from Bengaluru's Centre for Nano and Soft Matter Sciences can detect sulphur dioxide, a harmful pollutant that contributes to asthma and lung damage. This innovative device is not only low-cost but also highly sensitive, making it a game-changer for air quality monitoring.
Key Takeaways
- Innovative sensor capable of detecting SO2 at low concentrations.
- Real-time monitoring is essential for public health.
- Combines nickel oxide and neodymium nickelate for optimal performance.
- Portable design makes it ideal for various environments.
- User-friendly alerts facilitate quick responses.
New Delhi, July 4 (NationPress) Researchers from the Centre for Nano and Soft Matter Sciences (CeNS) in Bengaluru have introduced an innovative, cost-effective sensor designed to detect the hazardous gas sulphur dioxide (SO2), which is known to cause respiratory irritation, asthma episodes, and long-term lung harm, even at very low concentrations, as reported by the Ministry of Science and Technology on Friday.
CeNS is an autonomous body under the Department of Science and Technology (DST) of the Ministry.
SO2 is a harmful air pollutant frequently emitted by vehicles and industrial processes, and even minimal exposure can lead to serious health problems and chronic lung damage. Detecting it before it impacts health is quite challenging.
Real-time monitoring of SO2 levels is crucial for both human health and the environment; however, current technologies are often high-cost, energy-consuming, or incapable of detecting the gas at trace levels.
The research team developed the sensor using a combination of two metal oxides: nickel oxide (NiO) and neodymium nickelate (NdNiO3), through a straightforward synthesis method.
According to the researchers, led by Dr. S. Angappane, “NiO functions as the gas receptor, while NdNiO3 acts as the transducer that effectively conveys the signal, allowing for detection at concentrations as low as 320 ppb, which significantly exceeds the sensitivity of many commercial sensors.”
Additionally, Angappane and his team have created a portable prototype that utilizes the sensor for real-time SO2 monitoring.
The prototype includes a simple threshold-based alert system that activates visual signals: green for safe, yellow for caution, and red for danger, making it easy to interpret and respond to, even for individuals without scientific knowledge, as mentioned in their publication in the journal Small.
This compact, lightweight sensor is ideal for use in industrial regions, urban environments, and confined spaces where ongoing air quality monitoring is essential.
“With its superior sensitivity, portability, and user-friendly operation, this sensor system presents a practical approach to monitor and manage SO2 pollution, thereby supporting public health and environmental safety,” the team emphasized, showcasing the potential of material science in developing accessible solutions for pressing real-world issues.
Point of View
I find the development of this sensor not just a technological advancement but a vital step towards ensuring public health and environmental safety. The ability to detect harmful pollutants like sulphur dioxide at low concentrations could significantly reduce respiratory issues in urban areas, highlighting the importance of scientific innovation in addressing real-world challenges.
NationPress
21/07/2025
Frequently Asked Questions
What is the purpose of the new sensor developed by CeNS?
The sensor is designed to detect low concentrations of sulphur dioxide (SO2), a harmful pollutant that can cause respiratory irritation and long-term lung damage.
How does the sensor work?
The sensor combines nickel oxide and neodymium nickelate to detect SO2, with nickel oxide acting as the receptor and neodymium nickelate serving as the signal transducer.
Where can this sensor be used?
It is suitable for industrial areas, urban locations, and confined spaces where continuous air quality monitoring is necessary.
What are the visual indicators on the sensor prototype?
The prototype features a threshold-based alert system with green for safe, yellow for caution, and red for danger, facilitating easy interpretation.
What is the significance of this sensor in terms of public health?
By enabling real-time monitoring of SO2, the sensor can help mitigate health risks associated with air pollution, particularly for vulnerable populations.
