Characterization of weak acidity in selected precipitation samples from a forest ecosystem

Abstract
In different incident precipitation and throughfall samples, it is shown that the CO2-acidity (base neutralizing capacity up to pH 8.3) can be twice the H2O+ concentration. This fact can be explained only by the existence of weak acids (with the exception of H2CO3*). The buffer capacity was determined by using an exact acid/base-buffer-titration. Assuming the existence of only one weak acid, the concentration and strength were calculated. DOI: 10.1111/j.1600-0889.1987.tb00198.x