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https://locus.ufv.br//handle/123456789/24846
Tipo: | Artigo |
Título: | Avaliação quimiométrica da distribuição de metais pesados em composto de lixo urbano domiciliar |
Autor(es): | Egreja Filho, Fernando Barboza Jordão, Efraim Lázaro Reis e Cláudio Pereira Pereira Neto, João Tinoco |
Abstract: | The main obstacle to the use of compost from urban waste in agriculture is the presence of heavy metals. Once in the soil, their effect is accumulative and they may contaminate crops and water. The present study reports the evaluation of the chemical distributions of Cu, Pb, Mn and Zn in three different sized fractions (unsieved, < 1,18mm and > 1,18mm) of compost, by means of a sequencial extraction procedure and a chemometric analysis of the total content of all metals in each fraction. The pattern recognition methods showed significant differences in total heavy metal contents for the different fractions. The finest one was the most contaminated. Meanwhile, this fraction presented lower amounts of metals in avaliable forms. This behavior can be attributed to the presence of metal particles in their elemental states in this fraction. |
Palavras-chave: | Heavy metals Chemical speciation Chemometric methods |
Editor: | Química Nova |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S0100-40421999000300007 http://www.locus.ufv.br/handle/123456789/24846 |
Data do documento: | Mai-1999 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf | artigo | 88,41 kB | Adobe PDF | Visualizar/Abrir |
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