Pb Adsorption on Soil Typical to an Ammunition Destruction Site
| Autor: | Silvio Roberto de Lucena Tavares, Maria Claudia Barbosa, Shirlei Aparecida de Oliveira |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Pollution
Health Toxicology and Mutagenesis media_common.quotation_subject 010501 environmental sciences Toxicology 01 natural sciences symbols.namesake Soil Adsorption Soil Pollutants Batch test 0105 earth and related environmental sciences media_common Chemistry Langmuir adsorption model 04 agricultural and veterinary sciences General Medicine Contamination Hydrogen-Ion Concentration Models Theoretical Ammunition Kinetics Lead Environmental chemistry 040103 agronomy & agriculture symbols 0401 agriculture forestry and fisheries Graphical analysis Soil horizon Weapons |
| Zdroj: | Bulletin of environmental contamination and toxicology. 101(3) |
| ISSN: | 1432-0800 |
| Popis: | Pb, one of the constituents of ammunition, was identified as a contaminant in an ammunition destruction site. The present study aimed to assess Pb adsorption in the horizons of an uncontaminated representative soil profile of the region where the ammunition destruction site is located. Batch test experiments were performed to determine Pb adsorption in soil horizons, using solutions with natural and modified pH. The ISOFIT software was used to select the isotherm model that best fit Pb adsorption in soil horizons. The results showed that the Langmuir model is the best fit, because it presented the lowest corrected Akaike information criterion value. In addition, the graphical analysis indicated a Langmuir-type isotherm. The Langmuir isotherm parameter (Q0) indicated lower Pb adsorption capacity in the surface soil layers when compared with that in the deeper layers. The change in the initial solution pH influenced Pb adsorption, mainly in superficial horizons. Thus, the risk of soil Pb contamination might be more pronounced in the surface soil layers. |
| Databáze: | OpenAIRE |
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