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Chemosphere. 2017 May;174:604-612. doi: 10.1016/j.chemosphere.2017.01.059. Epub 2017 Jan 12.

Semiquantitative determination of total mercury in Pygocentrus nattereri Kner, 1858 and sediment at the plateau of Upper Paraguai River, Brazil.

Author information

1
Universidade do Estado do Mato Grosso, Laboratório de Ecotoxicologia, Centro de Estudos em Limnologia, Etnobiologia e Biodiversidade do Pantanal, CELBE, Cidade Universitária, Avenida Santos Dumont, SN, Bairro Santos Dumont, Cáceres, MT CEP: 78200-000, Brazil. Electronic address: klautenes@hotmail.com.
2
Coordenação de Processos Minerais, Centro de Tecnologia Mineral, CETEM/MCTI, Av. Pedro Calmon, 900, Cidade Universitária, CEP: 21.941-908, Rio de Janeiro, RJ, Brazil. Electronic address: segler@cetem.gov.br.
3
Coordenação de Processos Minerais, Centro de Tecnologia Mineral, CETEM/MCTI, Av. Pedro Calmon, 900, Cidade Universitária, CEP: 21.941-908, Rio de Janeiro, RJ, Brazil. Electronic address: ayallouz@cetem.gov.br.
4
Universidade do Estado do Mato Grosso, Laboratório de Ecotoxicologia, Centro de Estudos em Limnologia, Etnobiologia e Biodiversidade do Pantanal, CELBE, Cidade Universitária, Avenida Santos Dumont, SN, Bairro Santos Dumont, Cáceres, MT CEP: 78200-000, Brazil. Electronic address: aurea@unemat.br.

Abstract

In this study an environmental assessment of contamination by total mercury (THg) was carried out at the Plateau of the Upper Paraguai River. Total mercury was evaluated in sediment and muscle of the red piranha Pygocentrus nattereri Kner, 1858, a piscivorous species at the top of the food chain consumed for subsistence and commercially. THg concentrations were below national guidelines established by WHO for sediments (100 ng g-1) and fish (100-600 ng g-1) for most of the sampled sites. Two sites located downstream of artisanal diamond and gold mines had THg concentrations in fish equal or greater than 600 ng g-1.

KEYWORDS:

Paraguai River; Pygocentrus nattereri; Sediment; Semiquantitative method; Total mercury

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