IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Arsenic bioaccumulation in southern Argentinian species by SR-TXRF
Autor/es:
LAMELA, P.A.; NAVONI J.A.; VODOPIVEZ, C.L.; PEREZ, R.D.; CURTOSI, A.; BONGIOVANNI G. A.
Lugar:
Campinas
Reunión:
Workshop; XXIII Reuniao Anual de Usuários; 2013
Institución organizadora:
Brazilian Synchrotron Light Laboratory
Resumen:
Arsenic is an abundant toxic metalloid in our environment
and is bioaccumulated in exposed species, including humans.
Due to recent volcanism (in geological terms) of the Andes,
this contaminant is in high proportions in some superficial
aquifers [1]. The Andes continue beyond Tierra del Fuego,
under the sea, reappearing as islands and then emerge again as
Antartandes, the great mountain chain of the Antarctic Peninsula.
In these regions has also described the presence of As
in sediments and macro-algae [2]. Here, we report arsenic
bioaccumulation as well as elemental composition in Patagonian
and Antarctic organisms analyzed by X-ray Fluorescence
Spectrometry in grazing incidence geometry (SR-TXRF) at
the D09B-XRF beamline of the LNLS.