M?ssbauer study of biofilms formed at spring caves of Buda Karst, Hungary

摘要

Biofilms formed at spring caves of Buda Karst,Hungary, were investigated by ~(57)Fe M?ssbauer spectroscopy. 78 K M?ssbauer spectra were decomposed into a sextet and two doublets. The subspectra were assigned to goethite, hematite, ferrihydrite and siderite, according to their knownM?ssbauer parameters. The room temperature spectra indicated that goethite and/or hematite are in the superparamagnetic state at room temperature. The results can be interpreted in terms of karstification of hypogenic caves by the role of biofilms via discharge features.