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This year, Diwali in Delhi expected to be significantly more Polluted than in Past Two Years

The Air Quality Index will be 443 on Sunday, or the Diwali day, and reach 472 the day after

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People using Firecrackers to celebrate Diwali,. Flickr

New Delhi, October 29, 2016: Diwali this year in Delhi is expected to be significantly more polluted than in the previous two years.

According to System of Air Quality and Weather Forecasting and Research (SAFAR) of the Ministry of Earth Science, the air quality in the National capital region will be “severe” on October 30 and 31 and “worst” on October 31.

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The Air Quality Index (AQI) will be 443 on Sunday, or the Diwali day, and reach 472 the day after. The AQI between 300 to 400 is rated as very poor, and above 400 is rated as severe.

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“The highest levels of PM10 and PM2.5 are expected between 11 a.m. and 3 p.m. on the night of October 30 and 31. The air quality will be worst on October 31 and will start to improve from November 1,” says the SAFAR forecast.

There is enough moisture in the air and winds are stagnant, and atmospheric holding capacity of the emissions coming from firecrackers has increased. The highest levels of PM10 and PM2.5 are expected between 11 p.m. to 3 a.m. on the night of October 30-31.

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PM10 is particulate matter 10 micrometers or less in diameter and PM2.5 is particulate matter 2.5 micrometers or less in diameter.

While Noida is expected to be the most polluted area, Lodhi Road in Delhi is expected to be least polluted.

Incidentally, the levels of particulate matter were significantly low in 2016 as compared to 2014 and 2015, but since October 25, started to become significantly higher.

Delhi Pollution Control Committee (DPCC) Senior Scientist M.P. George attributed paddy stubble burning in Punjab and Haryana for this year’s Diwali being more polluted than in 2014 and 2015.

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“One of the chief reasons behind this Diwali being significantly more polluted than last two years, is crop burning in Punjab and Haryana,” said George.

“While every year around this time, farmers in Haryana and Punjab set paddy stubble ablaze to prepare for the next crop season, the pollution this year has been more,” he said .

As per SAFAR health advisory, when the AQI is severe, people should avoid all physical activity outdoors. (IANS)

Next Story

Exposure to Air Pollution May Trigger Non-Fatal Heart Attack

Air pollution's tiny particles may trigger heart attacks

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Heart attack pollution
Exposure to ambient ultrafine particles common in air pollution may potentially trigger a non-fatal heart attack. Pixabay

Researchers have found that even a few hours’ exposure to ambient ultrafine particles common in air pollution may potentially trigger a non-fatal heart attack.

Myocardial infarction is a major form of cardiovascular disease worldwide. Ultrafine particles (UFP) are 100 nanometres or smaller in size. In urban areas, automobile emissions are the primary source of UFP.

For the study, published in the journal Environmental Health Perspectives, researchers investigated the effects of UFP exposure and heart attacks using the number of particles and the particle length and surface area concentrations at hourly intervals of exposure.

“This study confirms something that has long been suspected–air pollution’s tiny particles can play a role in serious heart disease. This is particularly true within the first few hours of exposure,” said the study’s first author Kai Chen, Assistant Professor at Yale University in the US.

Heart attack pollution
The researchers were interested in whether transient UFP exposure could trigger heart attacks and whether alternative metrics such as particle length and surface area concentrations could improve the investigation of UFP-related health effects. Pixabay

UFP constitute a health risk due to their small size, large surface areas per unit of mass, and their ability to penetrate the cells and get into the blood system, the study said.

The researchers were interested in whether transient UFP exposure could trigger heart attacks and whether alternative metrics such as particle length and surface area concentrations could improve the investigation of UFP-related health effects.

The research team examined data from a registry of all non-fatal MI cases in Augsburg, Germany.

The study looked at more than 5,898 non-fatal heart attack patients between 2005 and 2015.

The individual heart attacks were compared against air pollution UFP data on the hour of the heart attack and adjusted for a range of additional factors, such as the day of the week, long-term time trend and socio-economic status.

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“This represents an important step toward understanding the appropriate indicator of ultrafine particles exposure in determining the short-term health effects, as the effects of particle length and surface concentrations were stronger than the ones of particle number concentration and remained similar after adjustment for other air pollutants,” said Chen.

“Our future analyses will examine the combined hourly exposures to both air pollution and extreme temperature. We will also identify vulnerable subpopulations regarding pre-existing diseases and medication intake,” Chen added. (IANS)