Chrysotile and asbestos amphiboles : two different fibre types
Chrysotile comes from the serpentine group, whereas the other fibre types, tremolite, amosite, crocidolite, actinolite and anthophyllite, are part of the amphiboles group. All these fibres are non-flammable. The major difference between chrysotile and amphiboles is related to its chemical composition, its acid-resistant properties and its effects on health. In contrast with amphiboles, Chrysotile does not persist in the lungs after inhalation; it is quickly eliminated by the body. A prolonged exposure to high concentrations of chrysotile fibres is required for a clinical manifestation of pulmonary damage to appear. In the past, such high exposures were frequent; it is no longer the case today. On the other hand, because of their toxicity and their high biopersistence, amphiboles are mainly responsible for mesothelioma and pulmonary deceases even caused after a short or moderate exposure. Today, chrysotile is the only asbestos fibre commercialized. |
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Volume 7, Number 1, February 2008
Latest developments regarding the European Union’s asbestos policy
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