Evaluation of the influence of sample preparation and extraction technique on soil solution composition

Menzies N.W. and Bell L.C. (1988) Evaluation of the influence of sample preparation and extraction technique on soil solution composition. Australian Journal of Soil Research, 26 3: 451-464. doi:10.1071/SR9880451


Author Menzies N.W.
Bell L.C.
Title Evaluation of the influence of sample preparation and extraction technique on soil solution composition
Journal name Australian Journal of Soil Research   Check publisher's open access policy
ISSN 0004-9573
Publication date 1988-01-01
Sub-type Article (original research)
DOI 10.1071/SR9880451
Open Access Status
Volume 26
Issue 3
Start page 451
End page 464
Total pages 14
Subject 1111 Nutrition and Dietetics
2304 Environmental Chemistry
1904 Performing Arts and Creative Writing
Abstract Soil solutions were extracted by immiscible liquid displacement with trichlorotrifluoroethane and by centrifuge drainage from surface and subsoil samples having a wide range of chemical and physical properties. Extractions were performed on field-moist samples and on air-dry samples which were re-wetted to different matric suctions and for different lengths of time. The composition of the soil solution obtained was the same with both methods of extraction when samples had been pre-wet to a matric suction of 0.1 bar. Immiscible liquid displacement extracted solution from a krasnozem surface soil at suctions as great as 15 bar; in contrast, centrifuge drainage failed to extract solution from this soil at > 3 bar. The concentration of ions in solutions extracted by displacement from soils with increasing matric suction rose to a far greater extent than that anticipated if concentration was the only mechanism operating. In re-wet air-dry samples, major cations and anions were at equilibrium levels in solution after incubation for 1 day; longer incubation times resulted in an artificial elevation of ionic strength through mineralization of organic matter in some surface samples. The levels achieved after 1 day were similar to those present in solutions extracted from field-moist samples.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 13 Sep 2016, 12:23:59 EST by System User