Application of a modified BCR approach to investigate the mobility and availability of trace elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, Zn, and Hg) from a solid residue matrix designed for soil amendment

Mikko Mäkelä*, Risto Pöykiö, Gary Watkins, Hannu Nurmesniemi, Olli Dahl

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Trace element speciation of an integrated soil amendment matrix was studied with a modified BCR sequential extraction procedure. The analysis included pseudo-total concentration determinations according to USEPA 3051A and relevant physicochemical properties by standardized methods. Based on the results, the soil amendment matrix possessed neutralization capacity comparable to commercial fertilizers. Additionally, the pseudo-total concentrations of all trace elements included in the Finnish regulation for agricultural fertilizers were lower than the respective statutory limit values. According to chemical speciation, the lability of trace elements increased in the following order: Hg < Cr < Co < Cu < As < Zn < Ni < Pb < Cd < V < Mo < Ba. The validity of the BCR approach as a tool for chemical speciation was confirmed by the additional acid digestion phase. Recovery of trace elements during the procedure assured the validity of the approach and indicated good quality of the analytical work.

Original languageEnglish
Pages (from-to)502-507
Number of pages6
JournalWorld Academy of Science, Engineering and Technology
Volume79
Publication statusPublished - 1 Jul 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • BCR
  • Bioavailability
  • Industrial residue
  • Sequential extraction
  • Trace element

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