Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 410798
Title Speciation of Se and DOC in soil solution and their relation to Se bioavailability.
Author(s) Weng, L.P.; Vega, F.A.; Supriatin, S.; Bussink, W.; Riemsdijk, W.H. van
Source Environmental Science and Technology 45 (2011)1. - ISSN 0013-936X - p. 262 - 267.
Department(s) Chair Soil Chemistry and Chemical Soil Quality
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) donnan membrane technique - ion-chromatography - selenium uptake - trace-metals - extracts - translocation - spectrometry - adsorption - sorption - samples
Abstract A 0.01 M CaCl2 extraction is often used to asses the bioavailability of plant nutrients in soils. However, almost no correlation was found between selenium (Se) in the soil extraction and Se content in grass. The recently developed anion Donnan membrane technique was used to analyze chemical speciation of Se in the 0.01 M CaCl2 extractions of grassland soils and fractionation of DOC (dissolved organic carbon). The results show that most of Se (67-86%) in the extractions (15 samples) are colloidal-sized Se. Only 13-34% of extractable Se are selenate, selenite and small organic Se (
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