English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/12947
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Refinement of the Differential Water Loss Method for Gypsum Determination in Soils

AuthorsArtieda, Octavio ; Herrero Isern, Juan ; Drohan, P. J.
Issue DateSep-2006
PublisherSoil Science Society of America
CitationSoil Sci Soc Am J 70:1932-1935 (2006)
AbstractDetermining the gypsum content in soil is lengthy and cumbersome using methods based on SO4 determination. Moreover, as these methods do not strictly titrate gypsum, inaccuracies can be produced by the presence of sulfate minerals other than gypsum. The thermogravimetric properties of gypsum, however, allow determination of its content in a rapid and easy way sufficiently accurate for many pedologic purposes. Our objective was to expand the lower limit of gypsum detection to make the test useful for soil classification and management. We have refined the differential water loss method by estimating the gypsum percentage from the loss of water in the soil sample between 70 and 90°C. Our results, compared with gravimetric determinations of precipitated BaSO4, found coefficients of determination of 0.98 for gypsum contents ranging from 2 to 50%, and 0.99 for contents >50%. The method is valid for gypsum contents >2% and thus improves previous estimation procedures.
Publisher version (URL)http://doi.org/10.2136/sssaj2006.0043N
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
link-HerreroJ_SSSAJ_2006.pdf46,87 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.