American Journal of Applied Sciences

Assessment of Soil Solution Chemicals after Tannery Effluents Disposal

Célia A. Surita, Thomas Gloaguen, Célia R. Montes and Carlos T.S. Dias

DOI : 10.3844/ajassp.2007.1063.1070

American Journal of Applied Sciences

Volume 4, Issue 12

Pages 1063-1070

Abstract

Knowledge about soil solution chemicals is important for assessing their mobility, availability, migration to groundwater and toxicity to plants. The objective of this study was to apply factor analysis to data obtained on soil solution chemicals during a one-year monitoring program in a controlled experiment with tannery effluents disposed on the soil surface, to extract information on their relationship and identify the main contaminants. Seventeen chemical parameters were monitored at six different depths on soil profile, focusing on metals and nitrate in soil solution. Four Factors accounted for 79.20% of the total variance, of which the most important were: Factor 1 (48.35%) showed significant loadings for Mn2+, Na+, K+, Ca2+, Mg2+, Cl-, Pb2+ and electric conductivity, strongly influenced by high load effluent disposal; Factor 2 (12.21%) was related with SO42+, Factor 3 (10.16%) associated with Cu2+ and Zn2+ and Factor 4 (8.49%) associated with nitrogen mineralization dynamics after high disposal.

Copyright

© 2007 Célia A. Surita, Thomas Gloaguen, Célia R. Montes and Carlos T.S. Dias. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.