scholarly journals Spatiotemporal trends in polychlorinated biphenyl concentrations in seafood based on long-term monitoring and remediation in New Bedford Harbor, Massachusetts

2019 ◽  
Author(s):  
Kathryn A. Crawford ◽  
Jennifer J. Schlezinger ◽  
Paul Craffey ◽  
Wendy Heiger-Bernays
Keyword(s):  
Cancer Risk ◽  
Environmental Quality ◽  
Polychlorinated Biphenyl ◽  
Human Cancer ◽  
Human Health Risk ◽  
Spatiotemporal Trends ◽  
New Bedford Harbor ◽  
Term Monitoring

AbstractElectrical manufacturing near New Bedford Harbor (NBH), MA in the mid-1900s led to severe polychlorinated biphenyl (PCB) contamination, which resulted in the harbor’s designation as a Superfund Site. Restrictions on the harvest of seafood from NBH have been in effect since 1979. Efforts to reduce the overall mass of PCBs in NBH by dredging PCB-contaminated sediments have been ongoing since the late 1980s. One goal of dredging is to reduce PCB concentrations in NBH seafood, monitored annually by Massachusetts Department of Environmental Protection (DEP) and Massachusetts Division of Marine Fisheries (MDMF). We used PCB concentrations in quahogs (2003-2016) and scup (2003-2014) to evaluate PCB distribution across seafood management areas and over time. Seafood PCB concentrations were used to evaluate improvements in environmental quality by examining total PCBs and patterns of PCB congeners within homolog groups, and by assessing human cancer risk from seafood consumption in the past (1980) and present (2012-2016). PCB concentrations in quahogs generally declined with increased time and distance from the PCB source, as does the cancer risk associated with their consumption. PCB concentrations in scup follow similar spatial patterns but show high annual variability. We conclude that quahogs are a reliable proxy for in-situ conditions, environmental quality, and human health risk.

scholarly journals ENVIRONMENTAL POLLUTION BY WASTEWATER FROM BROWN COAL PROCESSING ¬ A REMEDIATION CASE STUDY IN GERMANY

2014 ◽  
Vol 22 (1) ◽  
pp. 71-83 ◽  
Author(s):  
Arndt Wiessner ◽  
Jochen A. Müller ◽  
Peter Kuschk ◽  
Uwe Kappelmeyer ◽  
Matthias Kästner ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Large Scale ◽  
Pilot Scale ◽  
Wastewater Disposal ◽  
Interdisciplinary Approaches ◽  
Phenolic Wastewater ◽  
Term Monitoring

The large scale of the contamination by the former carbo-chemical industry in Germany requires new and often interdisciplinary approaches for performing an economically sustainable remediation. For example, a highly toxic and dark-colored phenolic wastewater from a lignite pyrolysis factory was filled into a former open-cast pit, forming a large wastewater disposal pond. This caused an extensive environmental pollution, calling for an ecologically and economically acceptable strategy for remediation. Laboratory-scale investigations and pilot-scale tests were carried out. The result was the development of a strategy for an implementation of full-scale enhanced in situ natural attenuation on the basis of separate habitats in a meromictic pond. Long-term monitoring of the chemical and biological dynamics of the pond demonstrates the metamorphosis of a former highly polluted industrial waste deposition into a nature-integrated ecosystem with reduced danger for the environment, and confirmed the strategy for the chosen remediation management.

scholarly journals Phytoindication of environmental mutagenesis in the in-situ conditions using the pollen of selected species of native flora

2021 ◽  
Author(s):  
Karol Mičieta
Keyword(s):  
Pollen Grains ◽  
Heavy Load ◽  
Native Flora ◽  
In Situ Conditions ◽  
Environmental Mutagenesis ◽  
Term Monitoring ◽  
Long Term Experience

The aim of this study is to provide an effective method for indicating ecogenotoxicity in the environment using pollen grains and microspores of selected species of the native flora in the in situ conditions. In the report, we summarize the results of long-term experience with the benefits of native flora species as bioindicators of polluted environments. We present the current results of long-term monitoring of phytoindication of ecogenotoxicity in Bratislava and selected traffic junctions in Slovakia. The increase of pollen grain abortion in the group of localities exposed to a heavy load of traffic pollution demonstrates the ecogenotoxic impact of traffic emissions in the environment. The detailed practical methodological tools and possible difficulties with the classification of abortivity of microspores and pollen grains of these plant species are discussed.

scholarly journals Possible mechanism of the formation of the Jichechang ground fissure in Datong, China, based on in-situ observations

2021 ◽  
Vol 80 (14) ◽  
Author(s):  
Ruichun Liu ◽  
Chengsheng Yang ◽  
Qingliang Wang ◽  
Lingyun Ji
Keyword(s):  
Vertical Direction ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Vertical Movement ◽  
Disaster Mitigation ◽  
Ground Fissure ◽  
In Situ Observations ◽  
Term Monitoring

AbstractThe Datong region of China suffers from severe ground fissure (GF) disasters. The Jichechang ground fissure (JGF) is typical among the GFs in Datong and is the most active. To provide scientific guidance for disaster mitigation, understanding the mechanisms governing GF activity in Datong needs to be improved. Here, long-term monitoring data (> 10 years) for the JGF are used to study the characteristics of its activity. The results show that the formation of GFs is mainly controlled by concealed faults. The JGF is mainly active in the vertical direction, with a differential vertical displacement 2.5 times greater than the horizontal displacement. The GF activity is periodic, with a periodicity of 320–420 days, which corresponds to the cycle of local agricultural irrigation. The JGF is especially active in June and July. The vertical activity of this fissure also displays a distinct quasi-periodic step-like displacement acceleration with a duration of 18–38 days. Numerical simulations show that irrigation pumping within 10 km of the JGF has a significant effect on the vertical movement of GFs. These results provide a better understanding of the mechanisms governing GF activity in this area and provide a valuable reference for the study of GFs in other regions.

Empirical Investigation of the Junge Variability−Lifetime Relationship Using Long-Term Monitoring Data on Polychlorinated Biphenyl Concentrations in Air

2009 ◽  
Vol 43 (8) ◽  
pp. 2746-2752 ◽  
Author(s):  
Sara Becker ◽  
Crispin J. Halsall ◽  
Matthew MacLeod ◽  
Martin Scheringer ◽  
Kevin C. Jones ◽  
...  
Keyword(s):  
Empirical Investigation ◽  
Polychlorinated Biphenyl ◽  
Monitoring Data ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals IN-SITU, LONG-TERM MONITORING SYSTEM FOR RADIOACTIVE CONTAMINANTS

2002 ◽  
Author(s):  
James S. Durham ◽  
Stephen W.S. McKeever ◽  
Mark S. Akselrod
Keyword(s):  
Monitoring System ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals Evidences of in Situ Remediation from Long Term Monitoring Data at a TCE-contaminated Site, Wonju, Korea

2013 ◽  
Vol 18 (6) ◽  
pp. 8-17 ◽  
Author(s):  
Seong-Sun Lee ◽  
Hun-Mi Kim ◽  
Seung Hyun Lee ◽  
Jae-Ha Yang ◽  
Youn Eun Koh ◽  
...  
Keyword(s):  
Monitoring Data ◽  
Contaminated Site ◽  
In Situ Remediation ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals IN-SITU, LONG-TERM MONITORING SYSTEM FOR RADIOACTIVE CONTAMINANTS

2002 ◽  
Author(s):  
James S. Durham ◽  
Stephen W.S. McKeever ◽  
Mark S. Akselrod
Keyword(s):  
Monitoring System ◽  
Long Term Monitoring ◽  
Term Monitoring
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