In the form of a water aerosol, particulate matter will carry small gases, microorganisms, sediments or primitive elements that are contained in the aqueous phase of our atmosphere.
These particles are then inhaled, such as carbon (soot) emitted by combustion sources, fungal spores, pollen, erosion, agricultural activities, volcanic eruptions… but also cooking, heating systems, cigarette smoke, etc.
The health effects of particulate matter are mainly respiratory and cardiac: coughs, irritations, bronchial inflammation, respiratory infections, etc. They are also attributed a role in the increase in cardiovascular disease and the development of lung cancer.
Asbestos is chrysotile, a long magnesium silicate fibre that is 400 to 500 times finer than a hair. Several derivatives of this type of rock mineral are used in the mining industry, thermal insulation, but also in cement for buildings and highways. They are also found in other products (glues, paints, car parts…) because of their chemical properties.
Their health effects are irrecoverable. They cause chronic inflammation of the lung (asbestosis) and the development of bronchopulmonary and digestive tract cancers.
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