Metal bioaccumulation in edible target tissues of mullet (Mugil liza) from a tropical bay in Southeastern Brazil.
The present study aimed to investigate metal bioaccumulation in mullet (M. liza) from a tropical bay located in Southeastern Brazil, comparing a previously considered reference site to a known contaminated area of the bay, as well as to conduct human health risk assessments with regard to the consumption of this species. The metal concentrations were compared to the maximum residue level (MRL) in foods established by the different national and international regulatory agencies, and the Provisional Tolerable Daily Intake (PTDI) was determined and compared to reference values. Chromium (Cr), Zinc (Zn), Copper (Cu), Manganese (Mn), Nickel (Ni), Cadmium (Cd) and Lead (Pb) concentrations were determined in the gills, muscle and liver of 28 mullet by ICP-MS after acid digestion. Certain metals exceeded MRL guidelines established by different regulatory agencies, indicating human health risks associated to these metals. PTDI values, however, did not exceed corresponding metal values proposed by the World Health Organization. The metal concentrations found in the mullet samples indicate that the previously considered reference site is now showing signs of anthropogenic contamination.
Universidade Federal do Estado do Rio de Janeiro (UNIRIO), de Pós-Graduação em Ciências Biológicas - Biodiversidade Neotropical, Av. Pasteur, 458, Urca, CEP: 22290-240, Rio de Janeiro - RJ, Brazil. Electronic address: rachel.hauser.davis@gmail.com.
Rachel Ann
RA
Hauser-Davis
Universidade Estadual Paulista (UNESP), Campus do Litoral Paulista -Praça Infante Dom Henrique s/n°, Parque Bitaru, CEP: 11330-900 - São Vicente, SP, Brazil.
Isabella C A C
IC
Bordon
Universidade Federal do Pará (UFPA) Instituto de Ciências Exatas e Naturais. Faculdade de Estatística and Faculdade de Ciências da Computação, Rua Augusto Correa, 01, CEP: 66075-110, Belém, PA, Brazil.
Terezinha F
TF
Oliveira
Universidade Federal do Pará (UFPA) Instituto de Ciências Exatas e Naturais. Faculdade de Estatística and Faculdade de Ciências da Computação, Rua Augusto Correa, 01, CEP: 66075-110, Belém, PA, Brazil.
Roberta Lourenço
RL
Ziolli
D000818:Animals; D061006:Bays / Q000737:chemistry*; D001938:Brazil; D004784:Environmental Monitoring; D008670:Metals / Q000032:analysis / Q000378:metabolism*; D023701:Smegmamorpha / Q000033:anatomy & histology* / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
D008670:Metals; D014874:Water Pollutants, Chemical
Environmental monitoring; Human risk assessment; Metals; Mullet; Southeastern Brazil; Tropical bay