Air pollution discolouring Taj Mahal, finds study

December 11, 2014

Washington, Dec 11: A team of researchers from India and the US has found that the browning of the Taj Mahal's iconic marble dome and soaring minarets is due to dust and airborne carbon particles.taj mahal

"Our team was able to show that the pollutants discolouring the Taj Mahal are particulate matter: carbon from burning biomass and refuse, fossil fuels, and dust - possibly from agriculture and road traffic," said Michael Bergin, professor at the Georgia Institute of Technology in the US.

Attracting millions of visitors each year, the Taj Mahal became a UNESCO World Heritage Site in 1983.

Beginning in the 1970s, observers noted a brownish cast to the white marble that makes up the structures.

For the study, the researchers used air sampling equipment to measure what was in the air in the Taj Mahal complex from November 2011 through June 2012.

In addition, they also placed small samples of pristine marble onto the Taj Mahal at various locations near the main dome.

After exposure to air pollutants over a two-month period, the researchers found particles of dust, brown organic carbon and black carbon in the filters and on the marble samples.

The carbon particles come from a variety of sources, including fuel combustion, cooking and brick-making, trash and refuse burning and vehicle exhaust.

The dust may come from local agricultural activities and vehicular traffic - or from distant sources.

Now that researchers know what's discolouring the Taj Mahal, the next step will be to identify the sources of the particles and plan control strategies.

The sources could be local - and the government has already taken steps to reduce vehicle and industrial emissions in the area - or the particles could be coming from longer distances away from the region, the authors pointed out.

"Some of these particles are really bad for human health, so cleaning up the Taj Mahal could have a huge health benefit for people in the entire region," Bergin concluded.

In addition to Georgia Institute of Technology and University of Wisconsin in the US, researchers from the Indian Institute of Technology at Kanpur (IIT-K) and Archaeological Survey of India (ASI) collaborated on the project. The study appeared in the journal Environmental Science & Technology.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
May 31,2020

New Delhi, May 31: The fourth phase of the coronavirus-triggered lockdown, which began on May 18, saw 85,974 COVID-19 cases till 8 am on Sunday, which is nearly half of the total cases reported in the country so far.

Lockdown 4.0, which will end on May 31 midnight, has accounted for 47.20 per cent of the total coronavirus infection cases, number crunching from the Union Health Ministry data reveals.

The lockdown, which was first clamped on March 25 and spanned for 21 days, had registered 10,877 cases, while the second phase of the curbs that began on April 15 and stretched for 19 days till May 3, saw 31,094 cases.

The third phase of the lockdown that was in effect for 14 days ending on May 17, recorded 53,636 cases till 8 am of May 18.

The country had registered 512 coronavirus infection cases till March 24.

India is the ninth worst-hit nation by the COVID-19 pandemic as of now.        

The first case of COVID-19 in India was reported on January 30 from Kerala after a medical student of Wuhan university, who had returned to India, tested  positive for the virus.

India registered its highest single-day spike of COVID-19 cases on Sunday, with 8,380 new infections reported in the last 24 hours, taking the country's tally to 1,82,143, while the death toll rose to 5,164, according to the Union Health Ministry.

The number of active COVID-19 cases stood to 89,995, while 86,983 people have recovered and one patient has migrated, it said.

"Thus, around 47.75 per cent patients have recovered so far," a senior Health Ministry official said.

With the fourth phase of lockdown ending on Sunday, the Home Ministry on Saturday said 'Unlock-1' will be initiated in the country from June 8 under which the nationwide lockdown will be relaxed to a great extent, including opening of shopping malls, restaurants and religious places, even as strict restrictions will remain in place till June 30 in the country's worst-hit areas.

While announcing the extension of the lockdown in containment zones across the country, the Home Ministry said temples, mosques, churches and other religious places and shopping malls will be allowed to open in a phased manner from June 8, while a decision on opening of schools and colleges will be taken in July in consultation with states.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
April 8,2020

New Delhi, Apr 8: The Supreme Court on Wednesday suggested that all tests to identify coronavirus positive patients should be conducted free of cost and asked the Central government to look into creating a mechanism for providing reimbursement for the same.

A bench headed by Justice Ashok Bhushan, while hearing a PIL via video-conferencing, suggested that the test should be conducted free of cost in the identified private laboratories and said that the court will pass appropriate order on the matter.

The apex court was hearing a PIL filed by lawyer and petitioner Shashank Deo Sudhi seeking direction to the Centre and other respective authorities to provide free of cost the testing facility for COVID-19 to all citizens in the country.

Solicitor General Tushar Mehta submitted that 118 laboratories were doing 15,000 test capacity per day and added that 47 private laboratory chains have also been involved for the same.

During the hearing, the court asked the Centre to ensure private labs don't charge a high amount for the test and suggested that the government can create an effective mechanism for reimbursement from the government for tests.

Mehta said that they will look into the suggestion and will try to devise what can be done best.

Sudhi, on the other hand, submitted that testing of coronavirus is very expensive and therefore the Central government should take all necessary steps to provide free of cost the testing facility for COVID-19 kits and others to all citizens in the country.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
June 19,2020

New Delhi, Jun 19: Delhi minister Satyendar Jain's health has deteriorated further. He is infected with the coronavirus. Jain has also been diagnosed with pneumonia. He is being shifted to an ICU.  According to doctors, Jain is now kept full-time on oxygen support as his oxygen saturation level has dipped.  

Jain was admitted to Rajiv Gandhi Super Speciality Hospital early Tuesday after running high fever and suffering a sudden drop in oxygen level. The 55-year-old leader's test result came positive on Wednesday evening after a second test. Jain was brought to the hospital and was administered a test for the novel coronavirus infection on Tuesday morning, for which he tested negative. But he still ran fever and showed symptoms, so another test was done after 24 hours of the first.

He will now be shifted Max Hospital in Saket and administered plasma therapy. 

Union Home Minister Amit Shah has also wished for Jain's speedy recovery.

On Thursday, Delhi Deputy Chief Minister Manish Sisodia took over the charge of health, PWD, power and other departments held by Jain. Jain will remain the cabinet minister without any portfolio in the Arvind Kejriwal government until he recovers. 

On Sunday, Jain attended a high-level meeting on the coronavirus situation in the national capital, chaired by Union Home Minister Amit Shah, which was also attended by Delhi Lt Governor Anil Baijal, Kejriwal, Sisodia and Union Health Minister Harsh Vardhan.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.