Lime scale
Limescale deposits in the narrower sense denotes the precipitation and / or sedimentation of calcium carbonate ("carbonate of lime"), however, like calcification as a term for the corresponding process, it is also used for analogous formations or processes in which salts other than calcium carbonate, but mostly Calcium salts , are involved:
- In geology, various sedimentary rocks made of calcium carbonate and various admixtures with different origins, for example chalk , reef limestone and travertine ; see limestone , sinter
- in household and technology mostly deposits on fittings, tiles or so-called boiler scale in pots, various equipment and pipes. They arise from the precipitation of mainly calcium carbonate from water; see water hardness .
- In medicine, deposits of calcium salts in the bones ( ossification ), calcareous deposits in tendons and tendon attachments ( tendinitis calcarea ) and non-specific inorganic plaques, especially in arterial vessels , which in many cases have a life-shortening effect. The latter process is often referred to as "hardening of the arteries", even if calcium carbonate does not play a role. For technical terms, see atherosclerosis (arteriosclerosis), parathyroid hormone- induced calcium infiltration of the tissues , microcalcifications in mammography and calcinosis ("chalking", e.g. tuberculous lesions ); see also Fetuin ("anti-calcification protein" in blood plasma )
- Colloquially, a person with declining cognitive abilities is called calcified ( Fahr's disease ), although deposits in the brain do not in principle allow any conclusions to be drawn about performance.
Lime deposits in the home and technology can be dissolved by acids (see: Decalcification ).
Individual evidence
- ↑ Gustav Peter, Marc Ladner, René Muntwyler: Baustofflehre. University publisher at the ETH Zurich, Zurich 1995, ISBN 978-3-519-05052-0 , p. 43.
- ↑ Calcified head does not like studying (accessed August 31, 2018)
Web links
Wiktionary: Kalkung - explanations of meanings, word origins, synonyms, translations