Levels and spatial distribution of trace elements in macroalgae species from the Todos os Santos Bay, Bahia, Brazil.

Autor: Brito GB; Instituto de Química, Universidade Federal da Bahia, Grupo de Pesquisa em Química Analítica, Campus de Ondina, 40170-115, Salvador, Bahia, Brazil., de Souza TL, Bressy FC, Moura CW, Korn MG
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2012 Oct; Vol. 64 (10), pp. 2238-44. Date of Electronic Publication: 2012 Jul 12.
DOI: 10.1016/j.marpolbul.2012.06.022
Abstrakt: Concentrations of elements (As, Ba, Cd, Co, Cr, Cu, Li, Mn, Ni, Pb, V, and Zn) were determined in ten species of macroalgae collected from six sites in the Todos os Santos Bay, Brazil, between May and July of 2010. An optimized microwave-assisted digestion procedure was used to digest the samples. The elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). A wide range of metal concentrations were observed between the species analysed. Somewhat higher concentrations of Cd (5.99μg g(-1)), Co (372μg g(-1)), Mn (640μg g(-1)), Ni (17.2μg g(-1)) and Zn (51.4μg g(-1)) were found in the brown macroalgae species Padina spp., whereas elements, such as As (19.7μg g(-1)) and Pb (8.27μg g(-1)), were mainly concentrated in the species Sargassum spp. and Bostrychia montagnei, respectively. Statistical analyses (ANOVA) of the Padina data showed significant inter-site differences for all metals examined except nickel.
(Copyright © 2012 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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