Bromine accumulation in acidic black colluvial soils
| Autor: | Teresa María Taboada Rodríguez, Cruz Ferro Vázquez, Harald Biester, Luis Rodríguez Lado, Manuela Costa Casais, Antonio Martínez Cortizas, Joeri Kaal |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Total organic carbon Bromine Chemistry Soil organic matter Mineralogy chemistry.chemical_element Soil classification 04 agricultural and veterinary sciences 010501 environmental sciences 01 natural sciences Humus Geochemistry and Petrology Environmental chemistry Soil pH Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Organic matter 0105 earth and related environmental sciences |
| Zdroj: | Geochimica et Cosmochimica Acta. 174:143-155 |
| ISSN: | 0016-7037 |
| Popis: | Recent investigations showed that bromine is incorporated to soil organic matter (SOM), its content increasing with humification. But few research was done on its long-term accumulation and the role played by pedogenetic processes, as those involved in organic matter stabilization. We investigated bromine content and distribution in four deep, acidic, organic-rich, Holocene soils from an oceanic area of Western Europe. Bromine concentrations (93–778 μg g −1 ) in the silt + clay ( −1 ) in the fine earth ( −2 , indicating a rather large variability in a small area, and total estimated retention was low (6–16%). The degree of SOM bromination, expressed as the Br/C molar ratio, varied between 0.03 and 1.20 mmol Br/mol C. The ratio was highly correlated ( n = 23, r 2 0.88, p |
| Databáze: | OpenAIRE |
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