NDLI: Avaliação quimiométrica da distribuição de metais pesados em composto de lixo urbano domiciliar

Content Provider	Semantic Scholar
Author	Filho, Fernando Barboza Egreja Reis, Efraim Lázaro Jordão, Cláudio Pereira Neto, João Tinôco Pereira
Copyright Year	1999
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) 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.
Starting Page	324
Ending Page	328
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1590/S0100-40421999000300007
Volume Number	22
Alternate Webpage(s)	http://www.scielo.br/pdf/qn/v22n3/1082.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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