Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"sediment quality guidelines"”.
-
Evaluation of approaches for the derivation of defensible sediment quality guidelines for application at Saskatchewan uranium operations
Sediment quality guidelines (SQGs) or values (SQVs) are used to assess the potential risk of contaminants in sediment to aquatic organisms, specifically benthic invertebrates. The objectives of this research were to evaluate SQGs derived specifically for use by the uranium industry in Canada, …
-
Levels of Heavy Metals in Sediment Samples from Select Creeks in Metro Vancouver, BC, Canada
… in surface water and metal concentrations in sediments. The pH, total dissolved solids and electrical conductivity in surface water samples ranged from 5.50 to 8.27, 14.0 to 410.0 ppm, and 19.0 to 903.0 µS/cm, respectively, with no discernible relationship between the surrounding land use and …
-
Water quality assessment and potential ecological risk of trace metals in sediments of some selected wetland across Limpopo Province; South Africa
… South Africa has put in place policies and guidelines to safeguard these valuable resources. This study was conducted to evaluate water quality and the potential ecological risk due to trace metals in sediments across wetlands in Limpopo Province. The samples' physicochemical parameters were …
-
Assessment of heavy metal contamination in flooding area case study at Sungai Pahang and Sungai Kelantan
… caused the rivers to faced serious water and sediment pollution problems. Floods speed up the metal mobilization in rivers. The first objective of this study is to determine heavy metal contamination in environmental samples obtained from flood prone areas in Pahang River and Kelantan River. …
-
River Sediment Sampling and Environment Quality Standards: A Case Study of the Ravensbourne River
Sediment is a major sink for heavy metals in river, and poses significant risks not only to river quality but also to aquatic and benthic organisms. At present in the UK, there are no mandatory sediment quality standards. This is partly due to insufficient toxicity data but also due to problems …
-
Heavy metal contamination in the Black River, Cape Town
Urban river sediments are often contaminated as a result of development and anthropocentric activity, and the Black River in Cape Town is a prime example of a river system suffering from unsustainable development. Methods of deter mining total and background concentrations of selected heavy metals …
-
Metals and polycyclic aromatic hydrocarbons in environmental matrices of the Fleet Lagoon, UK and toxicological investigations using the marine polychaete Hediste diversicolor.
… may bind directly to organic particles within sediment and may remain undisturbed or re-released during periods of hydrodynamic activity. Sediment may therefore act as both source and sink for complex mixtures of contamination and bio-accumulate in sediment dwelling organisms including the …
-
Fate of polycyclic aromatic hydrocarbons associated with coal-tar pitch, asphalt, charcoal, and soot in urban lake sediments
… aromatic hydrocarbons (PAHs) in urban lake sediments have increased significantly over the past several decades. Increased PAH loadings have been correlated with urbanization, and carbonaceous materials (CMs) such as coal tar and asphalt sealcoat and soot. PAH concentrations in urban lakes …