Estudo de Cations NA Precipitacao Antartica Estacao Comandante Ferraz (Study of Cations in the Precipation of Estacao Antartica Comandante Ferraz)

摘要

Rain water and fresh snow samples were collected at Estacao Antartica Comandante Ferraz, during one year (Jan. 86 to Mar. 87). These samples were analyzed for Na+, K+, Mg(2)+ and Ca(2)+ and the behavior of these cations in the liquid and solid precipitations is presented. The marine influence on rain water reported previously is confirmed in these analyses; samples of fresh snow also show this influence. Seasonal variation was not detected except in the case of Na+ for snow samples. It was found that the average cationic concentrations of fresh snow were 70 percent smaller than those of rain water.