Chemical composition of phytoplankton from the estuaries of Eastern Amazonia

Acta Amazonica

Maria Do Perpetuo Socorro Progene Vilhena²  Marcondes Lima Da Costa¹  José Francisco Berrêdo¹  Rosildo Santos Paiva¹  Pryscila Denise Almeida¹ 

[1] ,Universidade Federal do Pará Instituto de Ciências Exatas e Naturais Programa de Pós-Graduação em QuímicaBelém Pará ,Brasil

关键词: Sediments;    trace metals;    plankton;    surface water;    Sedimentos;    metais-traço;    fitoplancton;    água superficial;   

DOI  :  10.1590/1809-4392201305244

来源: SciELO

【 摘 要 】

Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state of Pará. The chemical composition of the surface water, bottom sediments (total sample and bioavailable fraction), and the phytoplankton were determined by inductively coupled plasma optical emission spectrometry. Phytoplankton contained high concentrations of Ca, P, Mn, Fe, Zn, Al, Ba, and Pb. The phytoplankton of the Mocajuba estuary is rich in Fe (2,967-84,750 µg g-1), while those from the Pará is rich in Al (1,216-15,389 µgg-1), probably reflecting divergent anthropogenic inputs. Both samples indicated a high bioconcentration factor derived from both the water and the bioavailable fraction, reflecting the efficiency of these organisms in the concentration of metals.

【 授权许可】

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