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Vanadium bioavailability in soils amended with blast furnace slag

Larsson, Maja and Baken, Stijn and Smolders, Erik and Cubadda, Francesco and Gustafsson (forward), Jon Petter (2015). Vanadium bioavailability in soils amended with blast furnace slag. Journal of Hazardous Materials. 296, 158-165
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Official URL: http://10.1016/j.jhazmat.2015.04.034

Abstract

Blast furnace (BF) slags are commonly applied as soil amendments and in road fill material. In Sweden they are also naturally high in vanadium. The aim of this study was to assess the vanadium bioavailability in BF slags when applied to soil. Two soils were amended with up to 29% BF slag (containing 800 mg V kg(-1)) and equilibrated outdoors for 10 months before conducting a barley shoot growth assay. Additional soil samples were spiked with dissolved vanadate(V) for which assays were conducted two weeks (freshly spiked) and 10 months (aged) after spiking. The BF slag vanadium was dominated by vanadium(III) as shown by V K-edge XANES spectroscopy. In contrast, results obtained by HPLC-ICP-MS showed that vanadium(V), the most toxic vanadium species, was predominant in the soil solution. Barley shoot growth was not affected by the BF slag additions. This was likely due to limited dissolution of vanadium from the BF slag, preventing an increase of dissolved vanadium above toxic thresholds. The difference in vanadium bioavailability among treatments was explained by the vanadium concentration in the soil solution. It was concluded that the vanadium in BF slag is sparingly available. These findings should be of importance in environmental risk assessment. (C) 2015 Elsevier B.V. All rights reserved.

Authors/Creators:Larsson, Maja and Baken, Stijn and Smolders, Erik and Cubadda, Francesco and Gustafsson (forward), Jon Petter
Title:Vanadium bioavailability in soils amended with blast furnace slag
Series/Journal:Journal of Hazardous Materials (0304-3894)
Year of publishing :2015
Depositing date:2 September 2015
Volume:296
Page range:158-165
Number of Pages:8
Publisher:Elsevier
ISSN:0304-3894
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:P Natural resources > P30 Soil science and management
P Natural resources > P33 Soil chemistry and physics
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Geochemistry
Agrovoc terms:Vanadium, Soil, Phytotoxicity, Bioavailability
Keywords:Vanadium, Speciation, Blast furnace slag, Soil, Phytotoxicity, Bioavailability
URN:NBN:urn:nbn:se:slu:epsilon-e-2880
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2880
Additional ID:
Type of IDID
Web of Science (WoS)000356995500019
DOI10.1016/j.jhazmat.2015.04.034
ID Code:12543
Faculty:S - Faculty of Forest Sciences
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:02 Sep 2015 13:55
Metadata Last Modified:14 Apr 2017 23:15

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