Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile

ABSTRACT The concentrations of Cu, Cr, Fe, Pb and Zn in thallus of three species of epiphytic lichens were determined: Flavopunctelia flaventior, Phaeophyscia orbicularis and Ramalina ecklonii, collected in three sectors of Talca city (Region of Maule, Chile), which have been exposed to different hu...

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Autores principales:	Pereira,Iris, Tapia,Jaime, Errázuriz,Ignacio, Basualto,Silvia
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2018
Materias:	Bioindicator Chile heavy metals lichens urban contamination
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432018000100494
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spelling	oai:scielo:S0717-664320180001004942018-11-30Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, ChilePereira,IrisTapia,JaimeErrázuriz,IgnacioBasualto,Silvia Bioindicator Chile heavy metals lichens urban contamination ABSTRACT The concentrations of Cu, Cr, Fe, Pb and Zn in thallus of three species of epiphytic lichens were determined: Flavopunctelia flaventior, Phaeophyscia orbicularis and Ramalina ecklonii, collected in three sectors of Talca city (Region of Maule, Chile), which have been exposed to different human activities. The first collection of samples was carried out by Pereira & Tapia. in 1999 and those results were compared with samples collected in 2016. Metal determinations were made by flame atomic absorption spectroscopy, considering the thallus of each lichen as representative sample for analysis. The methodological validation was carried out using certified reference material (SRM-1570). The highest levels of concentration in the three sectors and for the two sampling periods were for Fe > Zn > Pb > Cu > Cr > Cd. In 1999, the range of concentrations of the heavy metals in dry wet varied 335.5-1724 μg/g for iron (Fe); 40.7-209.5 μg/g for zinc (Zn); 10.4-64.2 μg/g for lead (Pb); 10-28.7 μg/g for copper (Cu); 0.6-4.8 μg/g for chromium and 0.1-0.4 μg/g for cadmium (Cd) while in 2016 the ranges were 1356.6-14280.4 μg/g for iron (Fe); 26.8-179.5 μg/g for zinc (Zn); 13.5-102.5 μg/g for lead (Pb); 7.9-36.2 μg/g for copper (Cu); 3.6-24.6 μg/g for chromium and not detected for cadmium (Cd). The samples collected in 2016 generally showed higher concentration levels of Fe, Cu, Cr and Pb than those collected in 1999, especially those corresponding to the central area of the city of Talca. According to the results, the species that accumulated more heavy metals were P. orbicularis followed by F. flaventior and last R. ecklonii. It can be concluded that foliose species are potentially better candidates to be used as long-term bioindicators than the fruticose species. The downtown sector of the city is the most polluted due to the presence of tannery industries and the increase of vehicular traffic that the city has had in the last two decades as a result of agricultural development and population growth.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana. Botánica v.75 n.1 20182018-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432018000100494en10.4067/S0717-66432018000100494
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bioindicator Chile heavy metals lichens urban contamination
spellingShingle	Bioindicator Chile heavy metals lichens urban contamination Pereira,Iris Tapia,Jaime Errázuriz,Ignacio Basualto,Silvia Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
description	ABSTRACT The concentrations of Cu, Cr, Fe, Pb and Zn in thallus of three species of epiphytic lichens were determined: Flavopunctelia flaventior, Phaeophyscia orbicularis and Ramalina ecklonii, collected in three sectors of Talca city (Region of Maule, Chile), which have been exposed to different human activities. The first collection of samples was carried out by Pereira & Tapia. in 1999 and those results were compared with samples collected in 2016. Metal determinations were made by flame atomic absorption spectroscopy, considering the thallus of each lichen as representative sample for analysis. The methodological validation was carried out using certified reference material (SRM-1570). The highest levels of concentration in the three sectors and for the two sampling periods were for Fe > Zn > Pb > Cu > Cr > Cd. In 1999, the range of concentrations of the heavy metals in dry wet varied 335.5-1724 μg/g for iron (Fe); 40.7-209.5 μg/g for zinc (Zn); 10.4-64.2 μg/g for lead (Pb); 10-28.7 μg/g for copper (Cu); 0.6-4.8 μg/g for chromium and 0.1-0.4 μg/g for cadmium (Cd) while in 2016 the ranges were 1356.6-14280.4 μg/g for iron (Fe); 26.8-179.5 μg/g for zinc (Zn); 13.5-102.5 μg/g for lead (Pb); 7.9-36.2 μg/g for copper (Cu); 3.6-24.6 μg/g for chromium and not detected for cadmium (Cd). The samples collected in 2016 generally showed higher concentration levels of Fe, Cu, Cr and Pb than those collected in 1999, especially those corresponding to the central area of the city of Talca. According to the results, the species that accumulated more heavy metals were P. orbicularis followed by F. flaventior and last R. ecklonii. It can be concluded that foliose species are potentially better candidates to be used as long-term bioindicators than the fruticose species. The downtown sector of the city is the most polluted due to the presence of tannery industries and the increase of vehicular traffic that the city has had in the last two decades as a result of agricultural development and population growth.
author	Pereira,Iris Tapia,Jaime Errázuriz,Ignacio Basualto,Silvia
author_facet	Pereira,Iris Tapia,Jaime Errázuriz,Ignacio Basualto,Silvia
author_sort	Pereira,Iris
title	Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
title_short	Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
title_full	Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
title_fullStr	Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
title_full_unstemmed	Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile
title_sort	comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in talca city, maule region, chile
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432018000100494
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Comparative study of the presence of heavy metals utilizing epiphytic corticolous lichens in Talca city, Maule Region, Chile

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