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Stormwater Pond Sediments: Temporal Trends in Heavy Metal Concentrations and Sediment Removal
SMHI.
2010 (engelsk)Inngår i: Soil & sediment contamination, ISSN 1532-0383, E-ISSN 1549-7887, Vol. 19, nr 2, s. 217-230Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Temporal trends in stormwater pond sediment quality were evaluated by conducting field sediment surveys in 1998 and 2006. A sediment removal process in 2006 was also assessed. Results show that, for both years, the sediment closest to the inlet had the lowest concentrations of metals. The results from 1998 showed no significant differences in sediment heavy metal concentrations depth while the results from 2006 showed a decreasing trend with depth. A significant difference between the two years could be seen for Cr, Cu, and Pb. The water phase in the pond showed a difference before and after the removal of sediment. The water samples after emptying showed higher concentrations of metals as a result of disturbing and re-suspending the bottom sediment. No significant difference could be found in the samples taken from the bottom sediment before the removal of the sediment and from the sediment pile formed during the removal process. The total heavy metal concentration in water exceeded the threshold limits for the selected quality guidelines and, according to soil quality guidelines, the sediment would be classified moderately serious to serious.

sted, utgiver, år, opplag, sider
2010. Vol. 19, nr 2, s. 217-230
Emneord [en]
heavy metals, retention pond, sediment removal, urban drainage
HSV kategori
Forskningsprogram
Hydrologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-594DOI: 10.1080/15320380903548490ISI: 000276430500007OAI: oai:DiVA.org:smhi-594DiVA, id: diva2:806252
Tilgjengelig fra: 2015-04-20 Laget: 2015-04-20 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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