Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment of contamination by heavy metals and petroleum hydrocarbons in sediments of Montevideo Harbour (Uruguay)
AbstractAs part of the first environmental assessment within Montevideo Harbour, in summer and winter of 1998, sediments samples were collected at eight locations to determine the spatial distribution of anthropogenic pollutants. Muddy sediments with high organic matter content dominate the study area. Heavy metal levels indicated that sediments were highly polluted with Zn (overall mean: 312±102 μg g−1 dry sediment), Pb (85±31), Cu (89±25), Cr (162±62), and Hg (0.63±0.3) and moderately with Ni (30±2) and Ag (1.2±0.4). Depending on location and season, aliphatic hydrocarbons reached from 21 to 120 μg g−1, while the unresolved complex mixture represented up to 76% of the total aliphatic fraction. Total PAH concentrations ranged from 1.56 to 90.44 μg g−1; except at one location, petroleum derivatives were identified as main local source. The results pointed out that almost all the harbour area presented some substances that can cause adverse biological effects, especially in the inner region where all metals are above PEL levels. Principal components analysis confirmed that the inner harbour region is most severely affected by the pollutants and it was possible to differentiate three regions according to their environmental quality.
Assessment of contamination by heavy metals and petroleum hydrocarbons in sediments of Montevideo Harbour (Uruguay)
AbstractAs part of the first environmental assessment within Montevideo Harbour, in summer and winter of 1998, sediments samples were collected at eight locations to determine the spatial distribution of anthropogenic pollutants. Muddy sediments with high organic matter content dominate the study area. Heavy metal levels indicated that sediments were highly polluted with Zn (overall mean: 312±102 μg g−1 dry sediment), Pb (85±31), Cu (89±25), Cr (162±62), and Hg (0.63±0.3) and moderately with Ni (30±2) and Ag (1.2±0.4). Depending on location and season, aliphatic hydrocarbons reached from 21 to 120 μg g−1, while the unresolved complex mixture represented up to 76% of the total aliphatic fraction. Total PAH concentrations ranged from 1.56 to 90.44 μg g−1; except at one location, petroleum derivatives were identified as main local source. The results pointed out that almost all the harbour area presented some substances that can cause adverse biological effects, especially in the inner region where all metals are above PEL levels. Principal components analysis confirmed that the inner harbour region is most severely affected by the pollutants and it was possible to differentiate three regions according to their environmental quality.
Assessment of contamination by heavy metals and petroleum hydrocarbons in sediments of Montevideo Harbour (Uruguay)
Muniz, Pablo (Autor:in) / Danulat, Eva (Autor:in) / Yannicelli, Beatriz (Autor:in) / Garcı́a-Alonso, Javier (Autor:in) / Medina, Gabriela (Autor:in) / Bı́cego, Márcia C. (Autor:in)
Environmental International ; 29 ; 1019-1028
20.03.2003
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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