Arsenic biotargets in volcanic environments.

LAMELA, P.A.; PÉREZ R.D.; VODOPIVEZ, C.L.; BONGIOVANNI G. A.

One Century of the Discovery of Arseniosis in Latin America (1914.2014)

Taylor & Francis Group

Lugar: Londres; Año: 2014; p. 386 - 388

In Patagonian Andes (Argentina) we found concentrations of As in superficial water up to 25 times the quality standard of drinking water for humans and 17 times for the life of aquatic species. The Andes continue beyond Tierra del Fuego, under the sea, reappearing as islands and Antartandes, the great mountain chain of the Antarctic peninsula. In these regions we also found As. Here, we report arsenic accumulation as well as elemental composition of Patagonian and Antartic organisms measured by X-Ray Fluorescence Spectrometry with synchrotron radiation (SR-XRF). In order to determine molecular As-targets, the As-protein association was analyzed by this methodology. The highest As concentration in naturally exposed species was 2.26 microg /g of dry weight in mushrooms with As-binding proteins.As-accumulating organisms may serve as a critical link in the biotransference of arsenic within both, aquatic and terrestrial communities, including humans.