• About Us
  • Advertise
  • Contact Us
  • DMCA
  • Privacy Policy
  • Follow on Google News
Thursday, March 30, 2023
  • Login
Country First
  • Home
  • India
    • National
    • State News
  • World
  • Business
  • Education
  • Entertainment
  • Lifestyle
    • Health & Fitness
    • Fashion & Beauty
    • Travel
    • Food
    • Photography
  • Tech
    • App News
    • Gadgets
  • Auto
  • Others
    • Sports
    • Agriculture
    • Science
    • Astrology
    • Finance/Money
    • Press Release
    • Religion
    • Social Work
No Result
View All Result
  • Home
  • India
    • National
    • State News
  • World
  • Business
  • Education
  • Entertainment
  • Lifestyle
    • Health & Fitness
    • Fashion & Beauty
    • Travel
    • Food
    • Photography
  • Tech
    • App News
    • Gadgets
  • Auto
  • Others
    • Sports
    • Agriculture
    • Science
    • Astrology
    • Finance/Money
    • Press Release
    • Religion
    • Social Work
No Result
View All Result
Country First
No Result
View All Result

Researchers find reason behind dense fog and haze in Delhi

Country First by Country First
January 27, 2021
in Science
Reading Time: 3 mins read
A A
0
Share on FacebookShare on Twitter

New Delhi : Visibility reduction due to fog and haze formation causes severe financial losses and it also jeopardises human lives. Researchers from the Indian Institute of Technology Madras (IIT-Madras) have found Chloride to be the highest inorganic fraction in particulate matter, primarily responsible for haze and fog formation in Northern India including the National capital Delhi.

The study explains that complex chemical reactions involving Hydrochloric Acid (HCl), which is directly emitted in the atmosphere from plastic contained waste burning and few industrial processes, is primarily responsible for high PM2.5 chloride level. The HCl from various sources combines with ammonia, which is emitted in great amounts over this region. Thus, the ammonium chloride (NH4Cl) so formed, condenses to aerosol and exponentially increases the water uptake ability of aerosol particles resulting in increased size, eventually leading to dense fog formation. In the absence of the excess chloride, the fog formation otherwise would be suppressed significantly.

You might also like

Workshop on disaster and climate-resilient pathways

Workshop on disaster and climate-resilient pathways

November 30, 2022
Young Scientist R. Vishnu Prassad from Chennai conferred Times Award

Young Scientist R. Vishnu Prassad from Chennai conferred Times Award

July 4, 2022

The findings were surprising for the researchers and unfolded the mystery of high chloride in PM2.5 and scientifically unravelled its precise role in fog and haze formation over Delhi. Dr. Sachin S. Gunthe, Associate Professor, Department of Civil Engineering, IIT Madras, who supervised and led the study, and his team put before themselves a very basic question “If overall PM2.5 mass burden over Delhi is much lower than polluted megacity Beijing, then why visibility reduction is a major problem in Delhi?”

Elaborating on the findings of this research, DrGunthe said, “We realised that despite absolute PM2.5 mass burden over Delhi being much less than other polluted megacities around the world, including Beijing, the pollution and atmospheric chemistry of Delhi is much more complex to understand. This work put forward the importance of measurements and modelling approaches to scientifically conclude, that half of the water uptake and visibility reduction by aerosol particles around Delhi is caused by the HCl emissions, which is locally emitted in Delhi, potentially due to plastic contained waste burning and other industrial processes.”

The group of scientists and students deployed state-of-the-art instruments to measure the chemical composition and other important properties of PM2.5, along with relative humidity and temperature in Delhi, which were operated round the clock for one month with extreme care and dedicated expertise. The observations were then used in complex chemical models.

Elaborating on this research, Prof R. Ravikrishna, Department of Chemical Engineering, IIT Madras, who was also part of the team that conducted this study, said, “With the results from first couple of days, it was very clear to us that Delhi is different; because generally for a polluted urban region like Delhi, one would expect sulfate to be a highest inorganic fraction of particulate matter; however, we found chloride to be the highest inorganic fraction of particulate matter.”

Speaking about the findings, Dr Gunthe said, “Scientifically, our job is half done. Plastic-contained waste burning can emit highly toxic chemicals called ‘dioxins’, which can accumulate in the food chain causing severe problems with reproduction and the immune system. We further need to investigate in this direction. Enhancement in the fundamental science of air pollution should be given importance as much as technology development to tackle pollution.”

The study has been published in the International journal ‘Nature Geoscience’. The study, led by IIT Madras, was carried out in collaboration with Max Planck Institute for Chemistry, Germany; Harvard University, United States of America (USA); Georgia Institute of Technology, USA; and Manchester University, United Kingdom. (India Science Wire)

Previous Post

Agarwal Vidya Vihar celebrated the 72nd Republic Day

Next Post

Private sector in COVID vaccination

Country First

Country First

Related Posts

Workshop on disaster and climate-resilient pathways

Workshop on disaster and climate-resilient pathways

by Country First
November 30, 2022
0

New Delhi (India Science Wire): The Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow,an autonomous research institution under the Department of...

Young Scientist R. Vishnu Prassad from Chennai conferred Times Award

Young Scientist R. Vishnu Prassad from Chennai conferred Times Award

by Country First
July 4, 2022
0

Scientist Vishnu Prassad Conferred with Times 40 under 40 - 2022 On 30th June 2022, Times 40 under 40 award...

CSIR-IICT establishes new pilot plant facility

by Country First
December 29, 2021
0

New Delhi, Dec. 29: A state-of-the-art Kilo Lab facility named after Acharya PC Ray has been set up at Council...

Science Minister recalls role of scientists in freedom movement

by Country First
December 2, 2021
0

New Delhi, Dec. 02: Union Minister of State (Independent Charge) Science & Technology; Minister of State (Independent Charge) Earth Sciences;...

Next Post

Private sector in COVID vaccination

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Related Post

Tourism Corporation of Gujarat Ltd plans to set up alternate employment for Doliwalas at Girnar

July 31, 2020
Aura Productions & Batbricks7 launched Mr, Miss & Mrs India Season-4 in Delhi

Aura Productions & Batbricks7 launched Mr, Miss & Mrs India Season-4 in Delhi

November 22, 2022
Entrepreneur Hip Hop Star Ahmed Saddam from Saudi is the next big thing in the Gulf Music Industry

Entrepreneur Hip Hop Star Ahmed Saddam from Saudi is the next big thing in the Gulf Music Industry

April 15, 2022

Category

  • Agriculture
  • App News
  • Astrology
  • Auto
  • Business
  • Education
  • Entertainment
  • Fashion & Beauty
  • Finance/Money
  • Food
  • Gadgets
  • Health & Fitness
  • Lifestyle
  • National
  • Photography
  • Politics
  • Press Release
  • Religion
  • Science
  • Social Work
  • Sports
  • State News
  • Tech
  • Travel
  • World

Tags

Ace Entrepreneur Ahmedabad Artificial intelligence Bengaluru Blockchain technology Content Creator COVID-19 Cryptocurrency CSIR DBT DeFi and NFT navigation tool Delhi DeSpace Protocol Digital Marketing disease DST Dubai Education entrepreneur environment Ginny Kapoor Gujarat India's Most Prominent Pageant Indian Institute of Technology Influencer Influencerquipo Kingston Technology MoES Mr. Gagandeep Kapoor Mrs.INDIA Galaxy Mrs.INDIA Galaxy 2022 Mumbai Music Industry National Pageant Mrs.INDIA Galaxy 2022 NFT pandemic photography real estate research science social media Surat technology TTK Prestige Vibrant Concepts

Country First is a digital news and story platform that bring you the news, articles, stories, and opinions on the latest happenings worldwide covering various sectors like nation, politics, and governance, social sector, review, foreign affairs, defence and security, latest review, lifestyle, entertainment, sports, technology, auto sectors, education, business and start-ups updates, Agriculture, Science, finance, money, food, and culture, etc.

  • About Us
  • Advertise
  • Contact Us
  • DMCA
  • Privacy Policy
  • Follow on Google News

© 2022 Country First

No Result
View All Result
  • About Us
  • Advertise
  • Contact Us
  • DMCA
  • Home
  • Privacy Policy

© 2022 Country First

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In