Tag Archive 'Pollution'

May 28 2008

Profile Image of Alok Vats
Alok Vats

Kolkata is now India’s pollution capital: Survey!

Filed under India

Kolkata has left behind Delhi city accounting the increased level of air pollution and the increasing number of respiratory disorders in the people of the city. A six-year survey conducted by the Chittaranjan National cancer institute (CNCI) revealed that more than 18 case per one lakh people in Kolkata are affected by lung cancer every year as compared to 13 persons per one lakh in Delhi.

According to environmental scientist and adviser of Chittaranjan National Cancer Institute, Twisha Lahiri, the numbers of heart attack cases were also showing a steep increase in the Eastern metropolis.

CNCI scientists maintain that more than seven in 10 people in Kolkata, including children as well as elderly people, suffer from various kinds of respiratory disorders.

Lahiri said roadside hawkers, shop owners, traffic policemen, auto-rickshaw drivers, rickshaw-pullers and others who spend long hours on the road were the most vulnerable victims of these disorders.

Lahiri blamed the increasing vehicular population and aging fleet of buses behind the increase in pollution. The pollution gives rise to breathing difficulties like asthma in children while elderly people are victims of lung cancer.

Nearly 80 per cent of the buses and trucks and nearly half of the taxis and auto-rickshaws need to be discarded from the roads to clean the city’s air, environmentalists felt.

“What we need is immediate introduction of CNG or LPG-driven buses, strict monitoring of auto-rickshaws which run on adulterated fuel and withdrawal of old buses belching toxic fumes,” she said.

Environmentalist Subhas Dutta had filed a PIL in the Calcutta High Court, alleging that the Bengal government was idle about controlling air pollution level.

“After a series of petitions and court rulings, very little was done to curb the killer pollution. That is inadequate and the fight will continue,” Dutta said.

No responses yet

Mar 11 2008

Profile Image of Alok Vats
Alok Vats

Brain function affected by pollution: Study!

Filed under Special Feature

A recent study by a team of researchers Zuyd University in Holland states that human brain functions are significantly affected by the inhaled nanoparticles of fumes. Long term effects of the exposure to dirty air even for an hour could interfere with normal functioning of the brain.

The researchers are studying the effect of increasing pollution in the cities and its negative effect on brain.

According to lead researcher Paul Borm, “We can only speculate what these effects may mean for the chronic exposure to air pollution encountered in busy cities where the levels of such soot particles (nanoparticles) can be very high”.

Research is carried out on 10 volunteers who were left in a room filled with clean air or exhaust from a diesel engine. After 30 minutes of the exposure their brain activities are analyzed for the changes using a device named electroencephalograph (EEG) that records the electrical signals of the brain.

The results displayed a stress response on the EEG from the brains of those people left in exhaust rooms. It was found that the effect continued even after leaving the room.

The results of the study have been published in the latest edition of the Particle and Fibre Toxicology journal.

No responses yet