Predictors of Copper Phytotoxicity in Mining-Contaminated Soils: Findings of Several Years of Research

A. Neaman, C. Yáñez

Research output: Contribution to journalArticlepeer-review

Abstract

Abstract—: This paper summarizes the findings of several years of the authors’ research on copper phytotoxicity in soils contaminated by copper mining industry in the Valparaiso region of central Chile. Although soils under study were contaminated by several elements, copper was found to be the most important factor limiting plant growth, while the other elements had no statistically significant effect. The concentration of copper in the 0.1 M KNO3 extract proved to be the best indicator of phytotoxicity compared to the total copper content or the activity of free Cu2+ ions in the same extract. The total copper content, pH, and dissolved organic carbon concentration were in turn found to be the most important variables in predicting copper concentration and copper ion activity in the 0.1 M KNO3 extract.

Original languageEnglish
Pages (from-to)1665-1672
Number of pages8
JournalEurasian Soil Science
Volume55
Issue number11
DOIs
StatePublished - Nov 2022
Externally publishedYes

Keywords

  • Cu activity
  • Dystric Arenosols
  • Eutric Fluvisols
  • limiting of plant growth
  • pH
  • toxicity

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