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A model for lead, zinc, and copper in lakes

Rippey, B, Rose, CL and Douglas, RW (2004) A model for lead, zinc, and copper in lakes. LIMNOLOGY AND OCEANOGRAPHY, 49 (6). pp. 2256-2264. [Journal article]

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We present a budget for lead, zinc, and copper in Lough Neagh, Northern Ireland, and use the results from this and seven other lakes in Europe and the United States to develop two simple, generic models for heavy metals in lake water. The models, based on retention coefficient and sedimentation coefficient, are assessed by comparing the modeled and measured steady-state lake concentrations. The results show that deposition from the atmosphere is an important source of contamination of the lakes by Pb (56.3% of total inputs) and Zn (34.8%), but not Cu (8.3%). The mean retention coefficient in five of the lakes is 0.70 (RSD = 29%), 0.72 (24%), and 0.24 (133%) for Pb, Zn, and Cu, respectively; mean total residence time is 0.21 (RSD = 64%), 0.36 (61%), and 0.77 (97%) yr; and mean sedimentation residence time 0.34 (RSD = 73%), 0.91 (99%), and 0.05 (95%) yr. The goodness of fit of the two models are similar, with root mean square error of prediction of +/-0.14, 1.9, and 1.6 mug L-1 for Pb, Zn, and Cu, respectively. The magnitude of the errors in relation to the ranges of concentration suggests that the models for Pb and Zn can be used as fate models for these metals in lake water.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Geography and Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Freshwater Sciences
ID Code:12342
Deposited By: Dr Richard Douglas
Deposited On:09 Mar 2010 09:36
Last Modified:15 Jun 2011 10:16

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