Please use this identifier to cite or link to this item:
Title: Mercury bioaccumulation and decontamination kinetics in the edible cockle Cerastoderma edule
Author: Cardoso, P. G.
Grilo, T. F.
Pereira, E.
Duarte, A. C.
Pardal, M. A.
Keywords: Bioaccumulation
Cerastoderma edule
Digestive gland
Human health
Issue Date: Feb-2013
Publisher: Elsevier
Abstract: Mercury bioaccumulation and decontamination kinetics in the edible cockle Cerastoderma edule were studied through a mesocosms experiment after a medium-term exposure to the metal. The results revealed that the bivalve presented distinct bioaccumulation kinetics according to the different tissues. While the gills showed a linear accumulation pattern, the digestive gland and the entire organism presented a saturation model, with higher accumulation during the first 7d of exposure and lower during the rest of the time. In addition, the bioaccumulation rate was not proportional to the Hg concentration, since the organisms under lower contamination presented higher bioconcentration factors than the ones under higher contamination. Gills were the tissues with higher mercury accumulation capability. Concerning the decontamination phase, C. edule lost approximately 80% of the mercury after 24 h exposure in clean seawater. Nevertheless, never reached the original condition, showing in the final (20 d detox), Hg levels (>0.5 ppm) higher than those allowed by the legislation regulating human food consumption. This represents a matter of concern for Human health.
Peer review: yes
DOI: 10.1016/j.chemosphere.2012.10.005
ISSN: 0045-6535
Appears in Collections:CESAM - Artigos
DQ - Artigos
Ria de Aveiro - Artigos

Files in This Item:
File Description SizeFormat 
mercury bioaccumulation and decontamination kinetics.pdf357.52 kBAdobe PDFrestrictedAccess

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.