TY - JOUR
T1 - Development and validation of a terrestrial biotic ligand model predicting the effect of cobalt on root growth of barley (Hordeum vulgare)
AU - Lock, Koen
AU - De Schamphelaere, K. A. C
AU - Becaus, S
AU - Criel, P
AU - Van Eeckhout, Hilde
AU - Janssen, C. R
N1 - Publication Authorstring : Lock, K.; De Schamphelaere, K.A.C.; Becaus, S.; Criel, P.; Van Eeckhout, H.; Janssen, C.R.
Publication RefStringPartII : <i>Environmental Pollution 147(3)</i>: 626-633
PY - 2007
Y1 - 2007
N2 - A Biotic Ligand Model was developed predicting the effect of cobalt on root growth of barley (Hordeum vulgare) in nutrient solutions. The extent to which Ca2+, Mg2+, Na+, K+ ions and pH independently affect cobalt toxicity to barley was studied. With increasing activities of Mg2+, and to a lesser extent also K+, the 4-d EC50Co2+ increased linearly, while Ca2+, Na+ and H+ activities did not affect Co2+ toxicity. Stability constants for the binding of Co2+, Mg2+ and K+ to the biotic ligand were obtained: log KCoBL = 5.14, log KMgBL = 3.86 and log KKBL = 2.50. Limited validation of the model with one standard artificial soil and one standard field soil showed that the 4-d EC50Co2+ could only be predicted within a factor of four from the observed values, indicating further refinement of the BLM is needed.
AB - A Biotic Ligand Model was developed predicting the effect of cobalt on root growth of barley (Hordeum vulgare) in nutrient solutions. The extent to which Ca2+, Mg2+, Na+, K+ ions and pH independently affect cobalt toxicity to barley was studied. With increasing activities of Mg2+, and to a lesser extent also K+, the 4-d EC50Co2+ increased linearly, while Ca2+, Na+ and H+ activities did not affect Co2+ toxicity. Stability constants for the binding of Co2+, Mg2+ and K+ to the biotic ligand were obtained: log KCoBL = 5.14, log KMgBL = 3.86 and log KKBL = 2.50. Limited validation of the model with one standard artificial soil and one standard field soil showed that the 4-d EC50Co2+ could only be predicted within a factor of four from the observed values, indicating further refinement of the BLM is needed.
U2 - 10.1016/j.envpol.2006.10.003
DO - 10.1016/j.envpol.2006.10.003
M3 - A1: Web of Science-article
VL - 147
SP - 626
EP - 633
JO - Environmental Pollution
JF - Environmental Pollution
IS - 3
ER -