Author: Candice Simmons
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Polybrominated diphenyl ethers (PBDEs) are a widely used class of flame retardants that are important sources for contamination in the marine environment. Sediments serve as a large reservoir for PBDEs due to their large sorption capacity. This research assessed the presence and distribution of PBDEs in Hillsborough Bay, a subdivision of Tampa Bay, FL, by determining levels in surface sediment samples, creating a historical profile of the contaminant in a sediment core taken from within the bay, and investigating sediment characteristics that control their distribution. Compositional patterns and temporal distributions of 8 of the 209 congeners of PBDEs (BDE-28, -47, -99, -100, -153, -154, -183 and 209) were determined in sediment surface samples and a sediment core collected throughout the study area. Contaminant concentrations varied spatially due to proximity to sources and the spatial variability of physical processes that suspend or remove contaminants from the water column. Concentrations in the bay also varied in time with factors such as wind, precipitation, and subsequent freshwater runoff. PBDE contamination in surficial sediments from various regions of Tampa Bay is not well correlated with sediment grain size or organic matter content, but these factors may be more important in suspended sediments which may control the fate of these contaminants in the bay. The results from this investigation can be used in understanding the extent of PBDE pollution, identifying sources, as well as implementing management strategies for Hillsborough Bay.
Polybrominated Diphenyl Ethers in Sediments Within the Hillsborough Bay Watershed
Author: Candice Simmons
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Polybrominated diphenyl ethers (PBDEs) are a widely used class of flame retardants that are important sources for contamination in the marine environment. Sediments serve as a large reservoir for PBDEs due to their large sorption capacity. This research assessed the presence and distribution of PBDEs in Hillsborough Bay, a subdivision of Tampa Bay, FL, by determining levels in surface sediment samples, creating a historical profile of the contaminant in a sediment core taken from within the bay, and investigating sediment characteristics that control their distribution. Compositional patterns and temporal distributions of 8 of the 209 congeners of PBDEs (BDE-28, -47, -99, -100, -153, -154, -183 and 209) were determined in sediment surface samples and a sediment core collected throughout the study area. Contaminant concentrations varied spatially due to proximity to sources and the spatial variability of physical processes that suspend or remove contaminants from the water column. Concentrations in the bay also varied in time with factors such as wind, precipitation, and subsequent freshwater runoff. PBDE contamination in surficial sediments from various regions of Tampa Bay is not well correlated with sediment grain size or organic matter content, but these factors may be more important in suspended sediments which may control the fate of these contaminants in the bay. The results from this investigation can be used in understanding the extent of PBDE pollution, identifying sources, as well as implementing management strategies for Hillsborough Bay.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Polybrominated diphenyl ethers (PBDEs) are a widely used class of flame retardants that are important sources for contamination in the marine environment. Sediments serve as a large reservoir for PBDEs due to their large sorption capacity. This research assessed the presence and distribution of PBDEs in Hillsborough Bay, a subdivision of Tampa Bay, FL, by determining levels in surface sediment samples, creating a historical profile of the contaminant in a sediment core taken from within the bay, and investigating sediment characteristics that control their distribution. Compositional patterns and temporal distributions of 8 of the 209 congeners of PBDEs (BDE-28, -47, -99, -100, -153, -154, -183 and 209) were determined in sediment surface samples and a sediment core collected throughout the study area. Contaminant concentrations varied spatially due to proximity to sources and the spatial variability of physical processes that suspend or remove contaminants from the water column. Concentrations in the bay also varied in time with factors such as wind, precipitation, and subsequent freshwater runoff. PBDE contamination in surficial sediments from various regions of Tampa Bay is not well correlated with sediment grain size or organic matter content, but these factors may be more important in suspended sediments which may control the fate of these contaminants in the bay. The results from this investigation can be used in understanding the extent of PBDE pollution, identifying sources, as well as implementing management strategies for Hillsborough Bay.
An Assessment of Polybrominated Diphenyl Ethers (PBDEs) in Sediments and Bivalves of the U.S. Coastal Zone
Author: K. L. Kimbrough
Publisher:
ISBN:
Category : Bivalves
Languages : en
Pages : 96
Book Description
This report represents the first national assessment of PBDEs in the U.S. coastal zone. Results suggest that they are widely distributed nationally. Several regions, including the northern Mid-Atlantic, central Gulf of Mexico, Southern California, Pacific Northwest and the Great lakes have elevated PBDE concentrations compared with other coastal regions. Furthermore, PBDE concentrations are positively correlated with human population density along the U.S. coastline. The national and regional perspectives provided herein are intended to support research, local monitoring, and to assist resource managers and policy makers tasked with making regulatory decisions about these contaminants.
Publisher:
ISBN:
Category : Bivalves
Languages : en
Pages : 96
Book Description
This report represents the first national assessment of PBDEs in the U.S. coastal zone. Results suggest that they are widely distributed nationally. Several regions, including the northern Mid-Atlantic, central Gulf of Mexico, Southern California, Pacific Northwest and the Great lakes have elevated PBDE concentrations compared with other coastal regions. Furthermore, PBDE concentrations are positively correlated with human population density along the U.S. coastline. The national and regional perspectives provided herein are intended to support research, local monitoring, and to assist resource managers and policy makers tasked with making regulatory decisions about these contaminants.
Determination of Polybrominated Diphenyl Ethers (PBDEs) in Sediment and Biota
Author: L. Webster
Publisher:
ISBN: 9788774820758
Category : Chemical oceanography
Languages : en
Pages : 0
Book Description
Publisher:
ISBN: 9788774820758
Category : Chemical oceanography
Languages : en
Pages : 0
Book Description
Polybrominated Diphenyl Ethers in Sediments of Tributaries and Open-water Areas of the Great Lakes
Author: Canada. Environment Canada
Publisher:
ISBN: 9781100124032
Category : Polybrominated diphenyl ethers
Languages : en
Pages : 8
Book Description
Publisher:
ISBN: 9781100124032
Category : Polybrominated diphenyl ethers
Languages : en
Pages : 8
Book Description
An Assessment of Polybrominated Diphenyl Ethers (PBDEs) in Sediments and Bivalves of the U.S. Coastal Zone
Author:
Publisher:
ISBN:
Category : Marine pollution
Languages : en
Pages : 87
Book Description
This report represents the first national assessment of PBDEs in the U.S. coastal zone. Results suggest that they are widely distributed nationally. Several regions, including the northern Mid-Atlantic, central Gulf of Mexico, Southern California, Pacific Northwest and the Great lakes have elevated PBDE concentrations compared with other coastal regions. Furthermore, PBDE concentrations are positively correlated with human population density along the U.S. coastline. The national and regional perspectives provided herein are intended to support research, local monitoring, and to assist resource managers and policy makers tasked with making regulatory decisions about these contaminants.
Publisher:
ISBN:
Category : Marine pollution
Languages : en
Pages : 87
Book Description
This report represents the first national assessment of PBDEs in the U.S. coastal zone. Results suggest that they are widely distributed nationally. Several regions, including the northern Mid-Atlantic, central Gulf of Mexico, Southern California, Pacific Northwest and the Great lakes have elevated PBDE concentrations compared with other coastal regions. Furthermore, PBDE concentrations are positively correlated with human population density along the U.S. coastline. The national and regional perspectives provided herein are intended to support research, local monitoring, and to assist resource managers and policy makers tasked with making regulatory decisions about these contaminants.
Determination of Select Polybrominated Diphenyl Ethers and Methoxylated Polybrominated Diphenyl Ethers in Sediment Cores from Two Inland Lakes in Michigan
Author: Patrick William Bradley
Publisher:
ISBN:
Category : Polybrominated diphenyl ethers
Languages : en
Pages : 192
Book Description
Publisher:
ISBN:
Category : Polybrominated diphenyl ethers
Languages : en
Pages : 192
Book Description
Polybrominated Diphenyl Ethers (PBDE) Analyses and Bioaccumulation Assessment for Sediments in the Vicinity of Rochester Harbor, Rochester, New York
Author:
Publisher:
ISBN:
Category : Pollution
Languages : en
Pages : 15
Book Description
Publisher:
ISBN:
Category : Pollution
Languages : en
Pages : 15
Book Description
Polybrominated Diphenyl Ethers (PBDEs) in Puget Sound Sediments (2004-2008)
Author:
Publisher:
ISBN:
Category : Persistent pollutants
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Persistent pollutants
Languages : en
Pages :
Book Description
Polybrominated Diphenyl Ethers in San Francisco Estuary
Author:
Publisher:
ISBN:
Category : Pentabromodiphenyl ether
Languages : en
Pages : 1
Book Description
The Regional Monitoring Program for Water Quality in the San Francisco Estuary (RMP) monitors water, sediment, and biota on a routine basis to evaluate impacts of multiple discharges. In addition to trace metals, PCBs, pesticides, and PAHs, the RMP has recently begun monitoring polybrominated diphenyl ethers (PBDEs). PBDEs in sediment and water are dispersed and have relatively uniform concentrations, reflecting their ubiquitous use. In biota, the concentrations appear to be higher in the Delta tributaries, suggesting either a localized source or a significant loading from the Central Valley. Concentrations of PBDEs in biota in San Francisco Bay are some of the highest observed worldwide, suggesting the importance of continued monitoring, especially of biota. In addition, monitoring will be important for determining the efficacy of the recently implemented ban in California on penta-PBDE and octa-PBDEs (effective June 1, 2006).
Publisher:
ISBN:
Category : Pentabromodiphenyl ether
Languages : en
Pages : 1
Book Description
The Regional Monitoring Program for Water Quality in the San Francisco Estuary (RMP) monitors water, sediment, and biota on a routine basis to evaluate impacts of multiple discharges. In addition to trace metals, PCBs, pesticides, and PAHs, the RMP has recently begun monitoring polybrominated diphenyl ethers (PBDEs). PBDEs in sediment and water are dispersed and have relatively uniform concentrations, reflecting their ubiquitous use. In biota, the concentrations appear to be higher in the Delta tributaries, suggesting either a localized source or a significant loading from the Central Valley. Concentrations of PBDEs in biota in San Francisco Bay are some of the highest observed worldwide, suggesting the importance of continued monitoring, especially of biota. In addition, monitoring will be important for determining the efficacy of the recently implemented ban in California on penta-PBDE and octa-PBDEs (effective June 1, 2006).
Microbial Degradation and Debromination of Polybrominated Diphenyl Ethers (PBDEs) in Aquatic Sediments
Author: 潘莹
Publisher:
ISBN:
Category : Environmental degradation
Languages : en
Pages : 180
Book Description
Publisher:
ISBN:
Category : Environmental degradation
Languages : en
Pages : 180
Book Description