%0 Journal Article
%T Acid gas hazards in the crater of Villarrica volcano (Chile)
%A Jeffrey B. Witter
%A Pierre Delmelle
%J Revista geol¨®gica de Chile
%D 2004
%I Scientific Electronic Library Online
%X The atmospheric concentrations of the acid gases SO2, HCl, and HF were measured during austral summer 2001 in the summit crater area of Villarrica volcano using 'filter packs'. These data were collected in order to assess the acid gas hazards to tourists who ascend the volcano. The authors compared their acid gas concentration results with exposure limits outlined by the National Institute of Occupational Safety and Health (NIOSH-United States of America). The authors conclude that tourists who visit the summit crater of Villarrica may be exposed to non-lethal concentrations of SO2 and HCl that exceed the recommended exposure limits defined by NIOSH, while atmospheric concentrations of HF do not exceed the recommended exposure limits Peligros de gases ¨¢cidos en el cr¨¢ter del volc¨¢n Villarrica (Chile). Las concentraciones atmosf¨¦ricas de los gases ¨¢cidos SO2, HCl y HF se midieron durante el verano austral de 2001 en el ¨¢rea del crater somital del volc¨¢n Villarrica, usando paquetes de filtro, para evaluar los peligros de gases ¨¢cidos para los turistas que ascienden el volc¨¢n. Los autores compararon los resultados de los gases ¨¢cidos con l¨ªmites de exposici¨®n delineados por el 'National Institute of Occupational Safety and Health' (NIOSH-Estados Unidos de Norteam¨¦rica). Los autores concluyeron que los turistas que visiten el cr¨¢ter somital del volc¨¢n Villarrica pueden estar expuestos a concentraciones no letales de SO2 y HCl que exceden los l¨ªmites de exposici¨®n recomendados por NIOSH, en tanto las concentraciones atmosf¨¦ricas de HF no exceden los l¨ªmites de exposici¨®n recomendados
%K Gases volc¨¢nicos
%K Peligros
%K Di¨®xido de sulfuro
%K Volc¨¢n Villarrica
%K Chile
%K Volcanic gases
%K Hazards
%K Sulfur dioxide
%K Villarrica volcano
%K Chile
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082004000200006