Carbon nanotubes as bad as asbestos, says studyMay 21st, 2008 - 3:25 pm ICT by admin
Washington, May 21(IANS) Long, thin carbon nanotubes might be as harmful as asbestos in the long run, if inhaled in sufficient quantities, according to a study. The study sought to evaluate whether carbon nanotubes - which have properties like asbestos - can cause mesothelioma, a cancer of the lung lining that take 30 years to manifest.
Widespread exposure to asbestos has been described as the worst occupational health disaster in US history and the cost of asbestos-related disease is expected to exceed $200 billion, according to major think tank RAND Corporation.
Asbestos fibres are harmful because they are thin enough to penetrate deep into the lungs, but sufficiently long to confound the lungs’ built-in clearance mechanisms for getting rid of particles.
Carbon nanotubes, which are as light as plastic and stronger than steel, are being developed for use in new drugs, energy-efficient batteries and futuristic electronics.
But questions have been raised about whether these products are safe, with possible hazards undermining their market in the long run.
“This study is exactly the kind of strategic, highly-focussed research needed to ensure the safe and responsible development of nanotechnology,” said Andrew Maynard, co-author of the study.
Findings of the study have been published in the latest issue of the journal Nature.
Though scientists have been raising concerns about the safety of long, thin carbon nanotubes, no recent research addressed this question.
The study, anchored by University of Edinburgh researchers, examined whether long and short carbon nanotubes, long and short asbestos fibres and carbon black cause pathological responses, known to be precursors of mesothelioma.
“The results were clear,” says Maynard. “Long, thin carbon nanotubes showed the same effects as long, thin asbestos fibres.”
- Electronic nose helps locate deadly tumour - Aug 02, 2012
- Carbon nanotubes that look like asbestos can lead to harmful disease - May 21, 2008
- How carbon nanotubes can affect lining of the lungs - Oct 26, 2009
- Carbon nanotubes can affect lung lining - Oct 26, 2009
- Lethal threat from asbestos fibres 'seriously underestimated', say scientists - Jul 20, 2009
- 'Ultimate' solvent for nanotubes paves way for armchair quantum wire - Jul 15, 2010
- Computer model helps design better nasal sprays - Feb 17, 2012
- How asbestos causes cancer - Jun 30, 2010
- Asbestos Abatement To Prevent Mesothelioma - Jun 20, 2010
- Carbon nanotubes bring 'synthetic' brains closer to reality - Apr 24, 2011
- Novel non-invasive tests could help in early detection of cancer - May 04, 2011
- Moon dust could be toxic to humans - Jul 15, 2012
- Solar power goes viral for peak efficiency - Apr 26, 2011
- Scientists create synthetic brain cell - Apr 25, 2011
- Carbon nanotubes in lithium batteries improve energy capacity - Jun 21, 2010
Tags: andrew maynard, asbestos fibres, asbestos related disease, cancer of the lung, co author, futuristic electronics, health disaster, journal nature, lungs, mesothelioma, new drugs, occupational health, particles, precursors, quantities, rand corporation, responsible development, stronger than steel, study findings, university of edinburgh