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Wed Nov 19

• Levels of Polybrominated Diphenyl Ether Flame Retardants in Sediment Cores from Western Europe: The levels of 14 brominated diphenyl ether (BDE)-congener s in sediment cores from three locations in Western Europe have been determined by GC/MS (negative chemical ionization mode). Sediments from the Drammenfjord (Norway), the western Wadden Sea (The Netherlands), and the freshwater Lake Woserin (Mecklenburg-V orpommern, Germany) showed a time-dependent pattern in the distribution of BDEs since the beginning of the industrial production of polybrominated diphenyl ether (PBDE) formulations.
• Brominated Flame Retardants in Sediment Cores from Lakes Michigan and Erie: The history of polybrominated diphenyl ethers (PBDEs) and the major polybrominated biphenyl congener (BB-153) was studied in dated sediment cores taken from Lakes Michigan and Erie. The concentrations of total PBDEs in these sediments have increased rapidly, with doubling times of 5?10 years, reflecting the increasing market demand for these flame retardants over the last 30 years. The total burdens of these compounds in the sediment of Lakes Michigan and Erie were 110 and 10 metric tons, respectively. We estimate that the total burden of these compounds in all of the Great Lakes is on the order of 200 tons.

Tue Nov 18

• Analysis of some polyhalogenate d organic pollutants in sediment and sewage sludge: A laminated sediment core collected in the southern part of the Baltic Proper was analysed for DDT compounds, polychlorinate d biphenyls (PCB) including the coplanar congeners, polybrominated diphenyl ethers (PBDE) and polychlorinate d naphthalenes (PCN). Two sewage sludge samples were also analysed for the same compounds. The results of the sediment analyses indicate the presence of PCB, DDT and PBDE compounds in sediment layers dating from the 1950s and later. TeBDE levels increase 4- to 8-fold and one PeBDE congeners levels increase 10- to 20-fold. The results of sewage sludge analyses showed the concentration of the individual PBDE to be at about the same level as for the individual PCB congeners.

Sun Nov 16

• Sedimentary rock: To understand what sedimentary rocks are made of, the processes that lead to their formation must be understood. The recipe for sedimentary rocks is: qweather a pre-existing rock to make sediment, transport and deposit the sediment and turn the sediment into rock (lithify the sediment).

Fri Nov 14

• Résultats Google Recherche d'images correspondant à http://www2.ul g.ac.be/geolse d/processus/ve nts.jpg

Sat Nov 8

• SedDB - Data Collection for Marine Sediment Geochemistry | Lamont-Doherty Earth Observatory
• Lamont-Doherty Earth Observatory Deep-Sea Sample Repository

Sun Nov 2

• Sediment Filter Cartridges - AMI Filters WaterAnywhere Sediment Filter Cartridges

Fri Oct 31

• Streambank Soil Bioengineering Technical Supplm. 141

Sat Oct 18

• Intro Page - Coastal Numerical Model References

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