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Determination of long-term spatial and seasonal distribution of contaminants in an urban river and estuarine system using polarographic techniques

Buggy, Conor J. (2006) Determination of long-term spatial and seasonal distribution of contaminants in an urban river and estuarine system using polarographic techniques. PhD thesis, Dublin City University.

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Abstract

The Tolka River and Estuary, Co. Dublin, Ireland, is a typical Irish urban river and estuarine system. It has significant metal and organometal contaminant loading. A one-month rapid sampling and analysis regime was devised to optimise riverine and estuarine sampling techniques and to determine seasonality of contaminant distribution. Over a thirty-month period contaminant concentrations within the surface sediment of the aquatic system were analysed from twenty sampling points. Six metals (Cd, Cr, Cu, Ni, Pb and Zn) and an organometal (TBT) were analysed using Differential Pulse Polarography for thirty and nineteen months respectively. Organic Matter, Suspended Particulate Matter, pH, Salinity and metal content of the water column were also analysed. This thirty-month assessment created an extensive database to determine spatial and seasonal distributions of contaminants over time and various in situ environmental and anthropogenic parameters that influence these distributions. It was found that contaminant concentrations within surface sediment are highly variable over a twelve-month period and that environmental conditions and anthropogenic sources of contaminants are the key factors affecting spatial and seasonal distributions.

Item Type:Thesis (PhD)
Date of Award:2006
Refereed:No
Supervisor(s):Tobin, John M.
Uncontrolled Keywords:estuarine systems; contamination; contaminant distribution; river pollution;
Subjects:Physical Sciences > Environmental chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Biotechnology
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
ID Code:17251
Deposited On:22 Aug 2012 14:27 by Fran Callaghan. Last Modified 22 Aug 2012 14:27

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