Half of inhaled diesel soot sticks to lungsJune 29th, 2012 - 2:04 pm ICT by IANS
Stockholm, June 29 (IANS) The exhaust from diesel-run vehicles, wood fires and coal fired power stations contains soot particles that not only pollute the air, but more dangerously, stick to human lungs, says a study.
Now for the first time, Lund University researchers have shown in a detailed study how more than half of all inhaled diesel soot particles remain in the body.
The figure is higher than for most other types of particles. For example, only 20 percent of another type of particle from wood smoke and other biomass combustion gets stuck in the lungs, the Journal of Aerosol Science reported.
One explanation is that diesel soot is made up of smaller particles and can therefore penetrate deeper into the lungs, where it is deposited. The study was based on diesel particles (mainly soot), said a university statement.
“Findings of this kind can be extremely useful both for researchers to determine what doses of soot we get into our lungs out of the amount we are exposed to, and to enable public authorities to establish well-founded limits for soot particles in outdoor air,” said Jenny Rissler, aerosol technology researcher at Lund University’s Faculty of Engineering, who led the study.
“Currently there is no specific limit for soot particles in the air, despite the fact that soot in the air is linked to both lung cancer and other diseases”, said Rissler.
Soot particles are not affect health but may also contribute to a warmer climate. Paradoxically, other types of aerosol particles can partly be desirable, so far as they have a cooling effect on the climate and thereby mitigate the warming effect of carbon dioxide.
“Soot particles are black and absorbs light, thus producing a warming effect. So it could be a double advantage to reduce it,” Rissler observed.
- Geoscientists call for reducing soot emissions - Jun 26, 2010
- Soot emissions key factor in global warming, says expert - Jul 29, 2010
- Black carbon 'contributes' to global warming - Jul 30, 2010
- Sulphuric acid formation affects climate, health - Aug 09, 2012
- Gulf spill air pollution could shed light on urban air quality - Mar 11, 2011
- Vehicular pollutants stick to the lung more than other smoke, dust particles - Apr 02, 2009
- Air pollution aggravates drought, flooding - Nov 14, 2011
- Half of aerosols in America originate from other continents - Aug 23, 2012
- Aerosols may impact climate more than estimated - Aug 02, 2011
- Soot from India triggers retreat of Himalayan glaciers - Feb 04, 2010
- Deforestation, fossil fuel use drive glacial ice-loss - Feb 20, 2012
- Wildfires likely to drive global warming - Jul 11, 2011
- Dust in Earth's atmosphere has doubled since the beginning of 20th century - Jan 09, 2011
- Cutting soot emissions best hope for saving Arctic ice - Jul 30, 2010
- Increased shipping likely to accelerate climate change as Arctic warms - Oct 26, 2010
Tags: aerosol particles, aerosol technology, biomass combustion, carbon dioxide, coal fired power, coal fired power stations, diesel soot, double advantage, faculty of engineering, human lungs, journal of aerosol science, lund university, lung cancer, public authorities, rissler, soot particles, technology researcher, university researchers, wood fires, wood smoke