Abstract
We examined the sediments of four coastal lagoons (Ria Lagartos, Bocas de Dzilam, Laguna de Chelem and Ria Celestun) from the state of Yucatan, Mexico, for three widely used commercial polybrominated diphenyl ethers formulations (penta-, octa- and deca-BDE). The most commonly found congeners in all four lagoons were BDEs 47, 99 and 100 (all in the penta-BDE formulation) and BDE209 (deca-BDE formulation). The greatest variety and highest concentrations of brominated flame retardants were found in Ria Lagartos, which also showed the highest BDE 100 concentration (24.129 ng/g). Hexabromocyclododecane was found in all lagoons, but at lower concentrations than those of the various polybrominated diphenyl ethers. Dispersal routes of these compounds are discussed, such as a ring of sinkholes (cenotes) adjacent to the lagoons. Moreover, electronic waste is a serious problem because municipal landfills have been the primary disposal method for these wastes and therefore represent a reservoir of brominated fire retardants.
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Acknowledgements
We thank the personnel of the Marine Geochemistry laboratory, and Víctor Ceja-Moreno for technical assistance, and we thak Sara Morales-Ojeda for the sampling area map.
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Valenzuela-Sánchez, I.S., Gold-Bouchot, G., Hernández-Núñez, E. et al. Brominated Flame Retardants in Sediments of Four Coastal Lagoons of Yucatan, Mexico. Bull Environ Contam Toxicol 101, 160–165 (2018). https://doi.org/10.1007/s00128-018-2347-z
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DOI: https://doi.org/10.1007/s00128-018-2347-z