Degradation of naturally produced hydroxylated polybrominated diphenyl ethers in Baltic Sea sediment via reductive debromination
| Autor: | Dennis Lindqvist, Johan Gustafsson |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Baltic States
Algae Health Toxicology and Mutagenesis 02 engineering and technology 010501 environmental sciences PBDE 01 natural sciences Polybrominated diphenyl ethers Halogenated Diphenyl Ethers Environmental Chemistry Ecotoxicology 0105 earth and related environmental sciences Reduction biology Chemistry OH-PBDE Sediment General Medicine Biodegradation 021001 nanoscience & nanotechnology biology.organism_classification Pollution humanities Congener Baltic sea Environmental chemistry Degradation (geology) 0210 nano-technology Water Pollutants Chemical Environmental Monitoring Research Article |
| Zdroj: | Environmental Science and Pollution Research International |
| ISSN: | 1614-7499 |
| Popis: | Over the last two decades, the occurrence of hydroxylated polybrominated diphenyl ethers (OH-PBDEs) has been observed to be nearly ubiquitous among Baltic Sea filamentous macroalgae. High concentrations are continuously recorded among red, green, and brown filamentous algae. Several of these algae species are ephemeral, and when large parts of the colonies decay at the end of their lifecycles, the OH-PBDEs are expected to largely partition to the sediment. In this study, the fate of OH-PBDEs in Baltic Sea sediment was investigated, with focus on the effect of reductive debromination. During chemical debromination, it was observed that the half-life could differ with as much as two orders of magnitude between a pentabrominated and a tetrabrominated congener. Using collected Baltic Sea sediment, it was further observed that the half-life of spiked pentabrominated OH-PBDEs spanned from a few days up to a few weeks in room temperature. At 4 °C, it took 6 months to achieve a 50% decrease in concentration of the fasted degrading congener. Clear differences in selectivity between chemical debromination and debromination in sediment were also observed when studying the major reaction products. Baltic Sea sediment seems to have a good capacity for reducing naturally produced OH-PBDEs. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-021-12462-3. |
| Databáze: | OpenAIRE |
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