Naslov
El deterioro de colecciones recientes da Malacofauna
(The deterioration of recent malacofauna collections)

Autori
Medaković, Davorin ; Štamol, Vesna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
INTERNATIONAL SYMPOSIUM AND FIRST WORLD CONGRESS OF PRESERVATION AND CONSERVATION OF NATURAL HISTORY COLLECTIONS / Gisbert, Julio ; Palacios Fernando ; Reig Santiago - Madrid : Direccion General de Bellas Artes y Archivos, Ministerio de Cultura, Madrid, Espana, 1992, 95-95

Skup
INTERNATIONAL SYMPOSIUM AND FIRST WORLD CONGRESS OF PRESERVATION AND CONSERVATION OF NATURAL HISTORY COLLECTIONS

Mjesto i datum
Madrid, Španjolska, 10.05.1992. - 15.05.1992

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
El Museo de Historia Natural de Croacia; IR-espctoscopia; Rayos X; Acetato de calcio hidratado
(Croatian Natural History Museum; IR- spectrometry; XRD; Calcium acetate hydrate)

Sažetak
The Croatian Natural Hystory Museum in Zagreb houses permanently five recent malacofauna collections. A widespread problem is damage to the shells in the form of a layer of thin crystals. The most damaged species are completely decomposed into crumbs or white powder. The damaged shells were analysed by IR-spectometry and X-ray powder diffraction. The results of the first study indicated the presence of calcium acetate hydrate (Ca(CH3COO)2H2O). It seems possible the collections were damaged by some koind of bacteria which, due to propitious microclimatic conditions, can grow on the shell surface resulting in calcium acetate hydrate as a final product.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Biologija

POVEZANOST RADA