Distribution and availability of copper, iron, manganese and zinc in the archaeological black earth profile from the Amazon region

Journal of the Brazilian Chemical Society

Cleide S. T. Mescouto²  Vanda P. Lemos²  Heronides A. Dantas Filho²  Marcondes L. Da Costa¹  Dirse C. Kern¹  Kelly G. Fernandes² 

[1] ,Universidade Federal do Pará Instituto de Ciências Exatas e Naturais Faculdade de QuímicaBelém PA ,Brazil

关键词: archaeological black earth;    distribution;    metals;    availability;    FAAS;   

DOI  :  10.1590/S0103-50532011000800012

来源: SciELO

【 摘 要 】

The archaeological black earth soils are rich in organic matter, contain ceramic fragments and lithics artifacts and feature nutrients in higher concentrations than other types of soils. To contribute information about micronutrient concentrations available in black earth soils, the distribution and availability of Cu, Fe, Mn and Zn in the archaeological black earth profile from the municipal district of Juruti, Pará State, was evaluated through sequential chemical extractions. The largest concentrations of Cu, Fe, Mn and Zn in the profile are found in the residual fraction. This study showed that the iron, manganese and zinc are preferentially available from the fractions associated with Fe-Mn oxides ranging from 1265.39 to 1818.12 mg kg-1, 0.83 to 48.51 mg kg-1 and 1.92 to 12.05 mg kg-1 respectively, and the copper from organic matter, ranging from 0.13 to 0.45 mg kg-1.

【 授权许可】

CC BY   
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