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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

Field assessment of the environment impact of potential pollutants on land irrigated with leachate generated from municipal solid wastes

Ruegg, Josephine January 1993 (has links)
No description available.
192

Phosphorus release from 12 contrasting European soils under their aggregate size fractions

Maguire, Rory January 1996 (has links)
No description available.
193

The fate of terrestrially derived phosphorus in estuaries

Ernstberger, Helmut Hans January 1999 (has links)
In this study the phase distribution of phosphorus (P) is examined in 7 Scottish East Coast rivers. Rivers with contrasting catchment properties were selected, including pristine highland rivers, lowland rivers with agricultural land use and a range of intermediate rivers. Suspended particulate matter (SPM) was rich in organic P and had total P contents in the range of 0.1 to 1%. Highest total P contents of particles were observed for the river richest in dissolved P. The pristine highland systems showed the lowest total P contents. Large increases in exchangeable P in summer were partly attributable to the presence of phytoplankton. Phytoplankton accounted for less than half and more typically around 20% of organic carbon in SPM. The remainder is likely to consist largely of amorphous, humic substances. Sorption properties (e.g. EPC<sub>0</sub>, equilibrium phosphate concentration at zero adsorption) of SPM were examined using adsorption isotherms. Particle concentrations for sorption experiments were kept low (ca. 200 mg/l) to allow extrapolations to natural conditions. SPM from highland rivers showed the largest affinity for P. Lowland rivers displayed a comparatively low affinity for P. EPC<sub>0</sub> values of SPM closely reflected soluble reactive phosphorus concentrations in river water. SPM from highland and lowland rivers showed consistent differences in organic carbon content. Organic carbon content of SPM was correlated to sorption parameters of SPM. The sorption parameters of intermediate rivers could be explained by mixing particles of different affinity, using organic carbon contents to trace the proportions of particle mixing. Under estuarine conditions the affinity of fluvial SPM for P decreases. The magnitude of the change is insufficient to cause desorption in the pristine highland rivers. Up to 80-fold increases in EPC<sub>0</sub> were observed for the remaining rivers suggesting desorption takes place in the estuary.
194

Fractionation of chromium toxicity in water

Wararatananurak, Puchong January 2000 (has links)
No description available.
195

Nitrate reduction and nitrous oxide production in a eutrophic estuary

Ogilvie, Brett January 1995 (has links)
No description available.
196

The Colne estuary as a source of N2O and NOx gases to the atmosphere

Robinson, A. D. January 1996 (has links)
No description available.
197

Development of computational hydraulic and water quality models for rivers, estuaries, reservoirs and aquifers with particular reference to waste stabilisation ponds

Guganesharajah, Ramalingam Kandiah January 2001 (has links)
No description available.
198

The impact of physicochemical water treatment on downstream clarification processes

Scriven, Richard James January 1997 (has links)
No description available.
199

Phytoremediation of soils contaminated by used motor oil

Dominguez, Elena January 2002 (has links)
There is no abstract available for this thesis. / Department of Natural Resources and Environmental Management
200

Chlorofluorocarbons in groundwater

Bateman, Alison Sian January 1998 (has links)
No description available.

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