Polybrominated diphenyl ethers (PBDEs) in core sediments from creek ecosystem: occurrence, geochronology, and source contribution
Autor: | M. Tiwari, Sanjay Kumar Sahu, P.Y. Ajmal, R.C. Bhangare, Gauri Girish Pandit |
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Rok vydání: | 2018 |
Předmět: |
Geologic Sediments
Environmental Engineering 010504 meteorology & atmospheric sciences India 010501 environmental sciences 01 natural sciences Polybrominated diphenyl ethers Rivers Dry weight Geochemistry and Petrology Halogenated Diphenyl Ethers Environmental Chemistry 0105 earth and related environmental sciences General Environmental Science Water Science and Technology Sediment General Medicine Sedimentation Congener Environmental chemistry Geochronology Environmental science Water Pollutants Chemical Environmental Monitoring |
Zdroj: | Environmental Geochemistry and Health. 40:2587-2601 |
ISSN: | 1573-2983 0269-4042 |
Popis: | The levels of 15 polybrominated diphenyl ether (PBDE) congeners in grab sediment and sediment cores from the Thane creek were monitored for their spatial and temporal distribution. Total PBDE (ΣPBDE) concentrations in grab sediments were ranging from 15.98 to 132.72 ng g-1 dry weight. BDE-209 was the most abundant congener with percentage contribution in the range of 19-35% to total PBDEs. Total PBDE show multimode concentration with depth in sediment, among which mode at a depth of 10 cm is predominant. Results of sediment core also indicates PBDEs were enormously used in last two decades in surrounding area. Sedimentation rate at the creek was also evaluated using Pb210 dating technique. Average percentage contribution of commercial penta-BDE (fP), octa-BDE (fO), and deca-BDE (fD) to the profile found in sediments collected across Thane creek were 24 ± 5, 5 ± 1 and 69 ± 7% (p |
Databáze: | OpenAIRE |
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