Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile

Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile

ABSTRACT: Laguna Verde Bay, a World Biosphere Reserve, seems to be barely uncontaminated due to its isolated geographical position (18 km south of Valparaíso, Chile) and low amount of anthropogenic activities. At its coastal border, there is a thermoelectric generator (using coal since 1939 and dies...

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Autores principales: Pavez,Javiera, Silva,Nelson, Cornejo-D’Ottone,Marcela, Rivera,Cecilia
Lenguaje:English
Publicado: Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:
heavy metals
marine pollution
marine sediments
allochthonous content
Laguna Verde
central
Chile
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501116
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spelling oai:scielo:S0718-560X20180005011162019-04-03Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, ChilePavez,JavieraSilva,NelsonCornejo-D’Ottone,MarcelaRivera,Cecilia heavy metals marine pollution marine sediments allochthonous content Laguna Verde central Chile ABSTRACT: Laguna Verde Bay, a World Biosphere Reserve, seems to be barely uncontaminated due to its isolated geographical position (18 km south of Valparaíso, Chile) and low amount of anthropogenic activities. At its coastal border, there is a thermoelectric generator (using coal since 1939 and diesel since 2007 as fuel), a small village (≈10.000 inhabitants) and a local fishermen’s wharf. A freshwater creek flows into the beach, creating a small coastal pond that sporadically overflows into the bay. With the objective of estimating the origin of the Laguna Verde Bay surface sediments and its heavy metal pollution level, the content of Total Organic Matter (TOM), organic carbon to total nitrogen ratio (C:N ratio), stable carbon isotope ratio (δ13C), Al, Fe, Cu, Mn, Pb and Hg in samples collected in August 2015, were measured. According to the δ13C values, the sediment origin was mostly terrestrial, with an allochthonous content greater than 50%. Since there is no legislation in Chile to establish the heavy metal concentrations for unpolluted marine sediments, a normalized metal enrichment factor (NEF) was computed to infer the contamination level. Despite the high Fe and Pb contents in the bay’s sediment at two stations (13.3 mg g-1 and 18.0 µg g-1, respectively), the NEF values in the bay generally correspond to a low level of pollution.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.5 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501116en10.3856/vol46-issue5-fulltext-24
institution Scielo Chile
collection Scielo Chile
language English
topic heavy metals
marine pollution
marine sediments
allochthonous content
Laguna Verde
central
Chile
spellingShingle heavy metals
marine pollution
marine sediments
allochthonous content
Laguna Verde
central
Chile
Pavez,Javiera
Silva,Nelson
Cornejo-D’Ottone,Marcela
Rivera,Cecilia
Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
description ABSTRACT: Laguna Verde Bay, a World Biosphere Reserve, seems to be barely uncontaminated due to its isolated geographical position (18 km south of Valparaíso, Chile) and low amount of anthropogenic activities. At its coastal border, there is a thermoelectric generator (using coal since 1939 and diesel since 2007 as fuel), a small village (≈10.000 inhabitants) and a local fishermen’s wharf. A freshwater creek flows into the beach, creating a small coastal pond that sporadically overflows into the bay. With the objective of estimating the origin of the Laguna Verde Bay surface sediments and its heavy metal pollution level, the content of Total Organic Matter (TOM), organic carbon to total nitrogen ratio (C:N ratio), stable carbon isotope ratio (δ13C), Al, Fe, Cu, Mn, Pb and Hg in samples collected in August 2015, were measured. According to the δ13C values, the sediment origin was mostly terrestrial, with an allochthonous content greater than 50%. Since there is no legislation in Chile to establish the heavy metal concentrations for unpolluted marine sediments, a normalized metal enrichment factor (NEF) was computed to infer the contamination level. Despite the high Fe and Pb contents in the bay’s sediment at two stations (13.3 mg g-1 and 18.0 µg g-1, respectively), the NEF values in the bay generally correspond to a low level of pollution.
author Pavez,Javiera
Silva,Nelson
Cornejo-D’Ottone,Marcela
Rivera,Cecilia
author_facet Pavez,Javiera
Silva,Nelson
Cornejo-D’Ottone,Marcela
Rivera,Cecilia
author_sort Pavez,Javiera
title Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
title_short Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
title_full Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
title_fullStr Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
title_full_unstemmed Laguna Verde Bay’s sediments origin and its heavy metals content (Al, Fe, Cu, Mn, Pb, and Hg), Valparaíso, Chile
title_sort laguna verde bay’s sediments origin and its heavy metals content (al, fe, cu, mn, pb, and hg), valparaíso, chile
publisher Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate 2018
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501116
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AT cornejod8217ottonemarcela lagunaverdebay8217ssedimentsoriginanditsheavymetalscontentalfecumnpbandhgvalparaisochile
AT riveracecilia lagunaverdebay8217ssedimentsoriginanditsheavymetalscontentalfecumnpbandhgvalparaisochile
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