Relations between acidic aluminum and soil pH, clay, and organic matter

Journal Article · Sun Jan 01 04:00:00 EST 1967 · Soil Sci. Soc. Am., Proc.; (United States)

DOI:https://doi.org/10.2136/sssaj1967.03615995003100060015x· OSTI ID:6966600

Pionke, H B; Corey, R B

The relationships of two measures of acidic Al contained in soil, namely KCl-exchangeable Al and nonexchangeable acidic Al (pH 4.8N NH/sub 4/OAC extractable Al minus KCl-exchangeable Al) with soil pH, clay, and organic matter content were evaluated statistically. Exchangeable Al concentrations were observed to be primarily related to pH. The nonexchangeable acidic Al was found to be significantly correlated with pH, clay, and organic matter content at the 1% level. However, nonexchangeable acidic Al correlated best with the organic matter which would imply the existence of aluminum-organic matter complexes in soil. A plot of nonexchangeable acidic Al with soil pH as determined in 1N KCl revealed an apparent maximum at a pH of approximately 4.1. These various interrelationships are combined into a proposed reaction scheme relating the various Al forms postulated to exist in soil.

• OSTI ID: 6966600
• Journal Information: Soil Sci. Soc. Am., Proc.; (United States), Journal Name: Soil Sci. Soc. Am., Proc.; (United States) Vol. 31; ISSN SSSAA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACIDIFICATION
ALKALI METAL COMPOUNDS
ALUMINIUM
CHLORIDES
CHLORINE COMPOUNDS
CLAYS
ECOLOGICAL CONCENTRATION
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
LAND POLLUTION
METALS
ORGANIC MATTER
PH VALUE
POLLUTION
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
SOILS