Title:	Comparing methods for extracting heavy metals from Histosols for establishing quality reference values.
Authors:	LIMA, E. S. A. AMARAL SOBRINHO, N. M. B. do PEREZ, D. V. COUTINHO, I. B.
Affiliation:	ERICA SOUTO ABREU LIMA, UFRRJ; NELSON MOURA BRASIL DO AMARAL SOBRINHO, UFRRJ; DANIEL VIDAL PEREZ, CNPS; IZABELLA BEZERRA COUTINHO, UFRRJ.
Date Issued:	2016
Citation:	Revista Brasileira de Ciência do Solo, v. 40, e0150097, 2016.
Description:	The diversity of methods for heavy metal extraction from soils complicates comparison of results used by environmental agencies to establish quality reference values. The aim of this study was to evaluate three soil digestion methods regarding the solubilizing capacity of Ba, Cr, Cu, Fe, Mn, Ni, Pb and Zn, and to propose a standard method to establish Quality Reference Values (QRVs) for Brazilian Histosols. Twenty soil samples were selected to evaluate the USEPA 3051, USEPA 3051A and Aqua Regia methods in a closed system. The methods tested were statistically similar regarding Cu, Fe and Mn extraction from soils. However, the methods can not be considered similar for Ba, Cr, Ni, Pb and Zn; Aqua Regia recorded the highest levels, except for Ba. The Aqua Regia method proved suitable for metal extraction from soils with organic characteristics and can be used to establish QRVs.
Thesagro:	Solo Horizonte
NAL Thesaurus:	Organic horizons
Keywords:	Pseudo-total content Soil digestion methods
DOI:	https://doi.org/10.1590/18069657rbcs20150097
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPS)