Bromine accumulation in acidic black colluvial soils

Antonio Martínez Cortizas*, Cruz Ferro Vázquez, Joeri Kaal, Harald Biester, Manuela Costa Casais, Teresa Taboada Rodríguez, Luis Rodríguez Lado

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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 (93-778μgg-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 1.20mmol Br/mol C. The ratio was highly correlated (n=23, r2 0.88, p

Original languageEnglish
Pages (from-to)143-155
Number of pages13
JournalGeochimica et Cosmochimica Acta
Early online date23 Nov 2015
Publication statusPublished - 1 Feb 2016

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