Research output

Chapter (in Edited Book) ()

Heavy Metals in Urban Channel Sediments of Aveiro City, Portugal

Citation
Pastorinho MR, Telfer T & Soares AMMV (2010) Heavy Metals in Urban Channel Sediments of Aveiro City, Portugal. In: Hamamura N, Suzuki S, Mendo S, Barroso CM, Iwata H, Tanabe S (ed.). Biological Responses to Chemical Contaminants: From Molecular to Community Level. Interdisciplinary Studies on Environmental Chemistry, 3, Tokyo, Japan: TERRAPUB, pp. 197-204.

Abstract
The quantification of six metals: aluminum (Al), cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb) and zinc (Zn), alongside with determination of organic carbon (OC) and calculations of C:N ratios was performed from surface sediments collected in urban channels of Aveiro City. The city is located along the shores of the Ria de Aveiro, a coastal lagoon, and until recently the city's channels and some of its oldest areas were tidally submerged by tidal floods. These events alongside with the impacts associated with urban development have contributed to create accumulation of metals in the sediments. Organic enrichment is generalized in the inner city channels whereas the opposite occurs in the outer channels. Significant correlations were established for the original dataset between Al and Cr > Zn > Cd (R2 = 0.79, 0.74, and 0.69, respectively), but not for Cu or Pb (R2 = 0.25, and 0.005, respectively), pointing to the prevalence of point sources of these two metals. Regressions of Metal/Al were used as the dataset normalizer allowing simultaneously the establishment of mathematical geochemical backgrounds and the consequent calculation of Enrichment Factors (EF). It was concluded that enrichment occurs in the inner city channels which export metals that are readily dispersed by tidal action.

Keywords
sediment; urban channels; metals; enrichment factors

StatusPublished
EditorHamamura N, Suzuki S, Mendo S, Barroso CM, Iwata H, Tanabe S
AuthorsPastorinho M Ramiro, Telfer Trevor, Soares Amadeu M V M
Title of seriesInterdisciplinary Studies on Environmental Chemistry
Number in series3
Publication date2010
URLhttp://www.terrapub.co.jp/…ec/03/index.html
PublisherTERRAPUB
Place of publicationTokyo, Japan
ISBN 978-4-88704-152-3
LanguageEnglish
© University of Stirling FK9 4LA Scotland UK • Telephone +44 1786 473171 • Scottish Charity No SC011159
My Portal