INVESTIGADORES
SOLDATI Analia Leticia
congresos y reuniones científicas
Título:
Metals and their binding in periostracum of Cypraea zebra and Cypraea talpa
Autor/es:
SOLDATI, ANALIA L.; BAUMANN, WOLFRAM
Lugar:
Bad Münster an der Nahe, Germany
Reunión:
Jornada; Jahresseminar des Graduiertenkollegs auf Burg Ebernburg in Bad Münster an der Nahe, 2003; 2003
Institución organizadora:
Interdiciplinary Research Training Group GRK826: "Trace Analysis of Elemental Species: Development of Methods and Applications"
Resumen:
The presence of metals will be studied in
the surface shell layer of two marine gastropods of the family Cypraeidae. These snails present a
transparent, brilliant and smooth coverage on their surface, which give them their
common name of cowry or porcelain snails. This about 40 mm surface, is not only interesting because of its beautiful aspect,
but also since it plays a protective roll against epibiotic agents.Metals and especially organic complexed
metals, are usual used as paints and toxics to fight against the fouling
organisms. One clear example is the very environmental toxic TBT added in
paints on ships. With this research we
want to define which metals are situated in the periostracum of this two shells
and in which binding form or structure, to elucidate what kind of role they
play in the adhesion properties or the protective adaptation defence. We made first investigations to define
which elements are found at all in the shells, using Instrumental Neutron
Activation Analysis (INAA). To find which of them are in the surface and how
are they bounded inside the periostracum, we used two modern surface
techniques: Electron Spectroscopy for Chemical Analysis (ESCA) and Raman
Spectroscopy (RS) in addition to Confocal Laser Microscopy. The first results
of these analyses will be presented.