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All publications of “Mari Lucia Campos”

3 results

ECOTOXICOLOGICAL ASSESSMENT OF COAL MINING WASTE

Luís Carlos Iuñes de Oliveira, Dilmar Baretta, Talyta Zortéa, Katiane Casarotto, Priscilla Dors, Mari Lucia Campos, [...]

01/Dec/2015

ABSTRACT The disposal of large amounts of coal mining waste chemically modifies the soil, and this may change the structure and activity of soil fauna. The objective of this investigation was to study the ecotoxicological effects of depositions of pyritic waste (coal plus pyrite) in two soils collected in Santa Catarina, Argissolo Vermelho-Amarelo (Ultisol) e Nitossolo Háplico (Hapludox), at the application rates of 0, 2.5, 5, 10, and 20 % of that residue. Survival and reproduction of Enchytraeus crypticus and […]

Arsenate and cadmium content in soils of the cerrado bioma

Mari Lucia Campos, Luiz Roberto Guimarães Guilherme, João José Granate de Sá e Melo Marques, Nilton Curi, Alessandra Siqueira Antunes Araújo, David José Miquelluti, [...]

01/Feb/2013

Knowledge on As and Cd levels in soils is important to monitor the entry of these elements into the food chain from anthropogenic sources. The purpose of this study was to determine the natural content of As and Cd in representative soils of the Cerrado region, Brazil. Soil samples were collected from three sub-regions: G (eastern Goiás), T (Triângulo Mineiro) and N (northeastern MG). To determine the soil levels of As and Cd, samples were digested by acid attack in […]

Content and maximum capacity of arsenic adsorption in Brazilian Oxisols

Mari Lucia Campos, Luiz Roberto Guimarães Guilherme, Rafael Siqueira Lopes, Alessandra Silveira Antunes, João José Granate de Sá e Melo Marques, Nilton Curi

01/Dec/2007

In view of the toxicity of As for man and animals and the possibility of existence of a great number of contaminated areas it is imperative to know the total As content in soils considered uncontaminated and about As sorption processes in soils of variable charge. The objective of this work was to determine the total content and maximum capacity of As adsorption (CMADSAs) in Oxisols. The total content was determined by the USEPA 3051A method. The cmADSAs was determined by […]