Tuesday February 19, 2019

CSE Study to Identify Sources of Pollution in Real-Time

Delhi-NCR pollution: CSE study to identify sources of pollution in real-time

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Delhi, air pollution, cold, smog
People take early morning walk amid smog in New Delhi, Dec. 26, 2018. In the Indian capital, the air quality hovered between severe and very poor this week posing a serious health hazard for millions of people. VOA

The Centre for Science and Environment (CSE), in association with the Delhi Pollution Control Committee (DPCC) and leading instrumentation company Horiba, Japan launched a pilot study on Wednesday on real-time source apportionment of PM2.5 in Delhi and adjoining areas.

The objective of the study is to identify the signature of various sources of pollution and carry out source speciation in select hotspots in Delhi and the National Capital Region.

The study was launched by the CSE in a round-table meeting here.

The monitoring for the study will begin from January 28 and continue till April 28. In these three months, the study will monitor around a dozen locations in Delhi-NCR.

Delhi. air pollution
A man rides his bicycle in front of the India Gate shrouded in smog in New Delhi, Dec. 26, 2018. VOA

CSE deputy director general Chandra Bhushan said: “The pilot study will come out with signatures to identify the major sources of pollution in real time. Once we have established the signatures for various sources of pollution, the real-time elemental analysis will help us identify the source of pollution in an area, which will then help regulators in taking corrective action quickly.”

The study will be carried out using a ‘Real-time PM and Elemental Analyzer PX-375’, which is a product of Horiba, and gives a continuous analysis of PM2.5 concentration and its elemental composition.

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The technology used for monitoring PM2.5 is Beta-Ray Attenuation; the elemental analysis would be done using X-ray fluorescence technology. The instrument for the study will be co-located with the DPCC’s continuous air pollution monitoring stations.

“This is an opportunity to move from static one-time source apportionment to dynamic source identification and realtime mitigation. It can inform the ongoing efforts and processes to implement the Graded Response Action Plan (GRAP) and the Comprehensive Action Plan (CAP) for a more effective impact,” Anumita Roychowdhury, executive director-research and advocacy, CSE said in a statement. (IANS)

Next Story

Scientists Find Solution to Reduce Air Pollution, Develop Smart Windows

The design could lay the foundation for next-generation flexible transparent smart windows that can reduce air pollution.

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Scientists, Air pollution
The design could lay the foundation for next-generation flexible transparent smart windows that can reduce air pollution. Pixabay

A team of Chinese scientists have developed a large-scale transparent smart window that can change light intensity while effectively capturing the particulate matter in smog, a study said.

The study published on Saturday in the journal iScience described a simple solution-based process to fabricate large-area flexible transparent windows with Ag-nylon electrodes for high-efficiency PM2.5 capture, reports Xinhua news agency.

It takes only 20 minutes to fabricate 7.5 square metres of Ag-nylon flexible transparent windows showing an optical transmittance of over 86 per cent, according to the group of scientists led by Yu Shuhong from the University of Science and Technology of China (USTC).

Scientists, Air Pollution Control
The scientists found that the obtained Ag-nylon electrodes could be used as an ideal intelligent thermochromic smart window with excellent mechanical stability. Pixabay

The Ag-nylon mesh can not only change the indoor light intensity, but also purify indoor air as a high-efficiency PM2.5 filter.

The scientists found that the obtained Ag-nylon electrodes could be used as an ideal intelligent thermochromic smart window with excellent mechanical stability.

It remains stable after undergoing a bending test with 10,000 bending cycles with a minimum bending radius of 2.0 mm.

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Also, the Ag-nylon electrodes can remove PM2.5 by 99.65 per cent while remaining stable even after 100 cycles of PM filtration and a cleaning process, according to the study.

The design could lay the foundation for next-generation flexible transparent smart windows that can reduce air pollution. (IANS)