Artifacts caused by collection of soil solution with passive capillary samplers

Citation
Kw. Goyne et al., Artifacts caused by collection of soil solution with passive capillary samplers, SOIL SCI SO, 64(4), 2000, pp. 1330-1336
Citations number
44
Categorie Soggetti
Environment/Ecology
Journal title
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN journal
03615995 → ACNP
Volume
64
Issue
4
Year of publication
2000
Pages
1330 - 1336
Database
ISI
SICI code
0361-5995(200007/08)64:4<1330:ACBCOS>2.0.ZU;2-9
Abstract
Soil solution was collected with passive capillary samplers (PCAPS) and zer o-tension samplers (ZTS) from A horizons of forested soils. The volume and chemistry of collected solutions were measured weekly during discrete seaso nal collection periods. Acid-washed PCAPS increased alkalinity (3-fold), pH (1-3 units), and concentrations of Ca (2-fold), Na (8-fold), and Si (4-fol d), relative to ZTS solutions. Aluminum concentrations were dramatically re duced in PCAPS compared with ZTS samples. Differences in solution chemistry were attributed to leaching and weathering of fiberglass wicking material utilized in the PCAPS. In addition, PCAPS collected greater volumes (normal ized by sampler area) of solution relative to ZTS in weak-structured sandy loam soil due to a preponderance of matrix now. The results indicate that t he PCAPS used in this study are not suitable for aqueous geochemical studie s of dilute soil solutions.