An evaluation of acid deposition on cation leaching and weathering rates of an Andosol and a Cambisol

R Guicharnaud, Graeme Iain Paton

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An evaluation of the response of an Andosol and a Cambisol to acid deposition and weathering rates was studied by using a controlled laboratory leaching experiment. Both soils where derived from mafic parent material, a Histic Andosol from Western Iceland and a Cambisol from North East Scotland. De-ionized water and water acidified with H2SO4 (pH 3) was leached through reconstructed soil columns to simulate 34 years of precipitation.

Acidic input increased cation leaching and weathering rates in both soil types and reduced pH levels. The Andosol proved generally to have higher weathering rates, leaching potential, ion exchange and acid-buffering capacity as well as maintaining a relatively steady pH despite intense acidic input. This was due to differences in parent material and mineral composition. The Andosol was developed from basaltic volcanic tephra, which had higher dissolution rates due to its amorphous mineral structures. The Cambisol was developed from gabbro with more stable mineral structures. (c) 2005 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)279-283
Number of pages5
JournalJournal of Geochemical Exploration
Volume88
DOIs
Publication statusPublished - 2006

Fingerprint

Andosol
Cambisol
weathering rate
acid deposition
Weathering
Leaching
Minerals
Cations
cation
leaching
Soils
Acids
parent material
mineral
Water
Ion exchange
Dissolution
tephra
soil column
buffering

Keywords

  • acid deposition
  • cation leaching
  • weathering rates
  • BASALTIC GLASS DISSOLUTION
  • SOIL SOLUTION
  • ACIDIFICATION
  • CONSEQUENCES
  • CHEMISTRY
  • MECHANISM
  • REMOVAL
  • CHINA
  • MODEL
  • RAIN

Cite this

An evaluation of acid deposition on cation leaching and weathering rates of an Andosol and a Cambisol. / Guicharnaud, R ; Paton, Graeme Iain.

In: Journal of Geochemical Exploration, Vol. 88, 2006, p. 279-283.

Research output: Contribution to journalArticle

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