Natural concentrations and reference values of heavy metals in sedimentary soils in the Brazilian Amazon

Clístenes Williams Araújo do Nascimento1, Luiz Henrique Vieira Lima2, Franklone Lima da Silva3

  • 1Programa de Pós-graduação em Ciência do Solo, Universidade Federal Rural de Pernambuco, Rua Manuel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco, 52171-900, Brazil. cwanascimento@yahoo.com.

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