Chemistry School;
Rio de Janeiro Federal University;
Rio de Janeiro;
RJ 21941-909;
Brazil;
Soil Laboratory;
North Fluminense State University;
Campos dos Goytacazes;
RJ 28013-602;
Brazil;
Department of Soil and Agricultural Engineering;
State University of Southwest Bahia;
Vitoda da Conquista;
BA 45031-300;
Brazil;