201010 LTD / SCIENCE PHOTO LIBRARY 201010 LTD / SCIENCE PHOTO LIBRARY
PM-10 pollutant. Computer artwork of a microscopic solid pollutant particle. This particle is less than 10 micrometres (a hundredth of a millimetre) in diameter, and particles of this size are known as PM-10 particles. These particles are small enough to penetrate deep into the lungs, where their sharp edges can damage the lung tissues. Road traffic, and particularly diesel vehicles, are a major source of airborne PM-10 particles.
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