Speciation of Water-Extractable Organic Nutrients in Grassland Soils (2010)
Ros, G.H., Tschudy, T.C., Chardon, W.J., Temminghoff, E.J.M., Koopmans, G.F.
The release of dissolved organic matter (DOM) from agricultural land can have a large impact on the transport of N and phosphorus (P) to surface waters leading to water quality impairment. The...
Donnan Membrane Technique (DMT) for Anion Measurement (2010)
Alonso Vega, M.F., Weng, L., Temminghoff, E.J.M.
Donnan membrane technique (DMT) is developed and tested for determination of free anion concentrations. Time needed to reach the Donnan membrane equilibrium depends on type of ions and the...
Effects of Lability of Metal Complex on Free Ion Measurement Using DMT (2010)
Very low concentrations of free metal ion in natural samples can be measured using the Donnan membrane technique (DMT) based on ion transport kinetics. In this paper, the possible effects of slow...
Schenkeveld, W.D.C., Temminghoff, E.J.M., Reichwein, A.M.
FeEDDHA products are widely used to prevent and remedy Fe chlorosis in crops grown on calcareous soils. These products consist of a mixture of FeEDDHA components: racemic o,o-FeEDDHA, meso...
Gao, R., Temminghoff, E.J.M., Eisner, M.D., ...
This study aims to determine whether the dynamic ion speciation (DIS) model, as introduced in part I, can predict the ion composition in freshly prepared simulated milk ultrafiltrate (SMUF) under...
Gao, R., Temminghoff, E.J.M., Eisner, M.D., ...
Freshly prepared simulated milk ultrafiltrate (SMUF) is a solution that is supersaturated with respect to various calcium phosphate phases that precipitate in time. As a consequence, the ion...
Bregliani, M., Ros, G.H., Temminghoff, E.J.M.
An important source of nitrogen (N) for crops is mineralization of soil organic matter during the growing season. Awareness is growing that dissolved organic nitrogen (DON) plays an important role in...
Effect of Disaccharides on Ion Properties in Milk-Based Systems (2010)
Gao, R., Temminghoff, E.J.M., Eisner, M.D.
The mean spherical approximation (MSA) theory is used to explain the impact of sugars on ion properties in milk-based systems by taking into account electrostatic interactions and volume exclusion...
Extractable and dissolved soil organic nitrogen - A quantitative assessment (2009)
Ros, G.H., Hoffland, E., Temminghoff, E.J.M.
Extractable Organic N (EON) or Dissolved Organic Nitrogen (DON) pools are often analyzed to predict N mineralisation, N leaching, and to evaluate agricultural (nutrient) management practices. Size...
Gao, R., Temminghoff, E.J.M., Eisner, M.D.
This study focused on determination of free Ca2+, Mg2+, Na+ and K+ concentrations in a series of CaCl2 solutions, simulated milk ultrafiltrate and reconstituted skim milk using a recently developed...
Phosphorus removal from soil using Fe oxide-impregnated paper: Processes and applications (2009)
Los, A.M.D., Temminghoff, E.J.M., Schenkeveld, W.D.L., Hiemstra, T.
Fe oxide-impregnated paper (Pi-paper) is used as an artificial Phosphorus (P) sink to study P availability in soils and runoff. Pi-papers were introduced as they would mimic P uptake by plant roots...
Brus, D.J., Koopmans, G.F., Temminghoff, E.J.M., Japenga, J., Li, Z., Song, J., ...
Received for publication May 14, 2008. Soils in the Fuyang valley (Zhejiang province, southeast China) have been contaminated by heavy metals. Since rice (Oryza sativa L.) is the dominant crop in the...
Naar een betrouwbare schatting van de chemische beschikbaarheid van fosfaat in de bodem (2009)
Los, A.M.D., Bussink, W., Temminghoff, E.J.M.
Om eutrofiëring van oppervlaktewater te beperken is minimalisatie van uitspoeling en afspoeleing van fosfaat in de bodem geboden. Het nauwkeurig vaststellen van de biobeschikbaarheid van fosfaat in...
Koopmans, G.F., Schenkeveld, W.D.C., Song, J., Luo, Y., Japenga, J., Temminghoff, E.J.M.
The use of the [S,S]-isomer of EDDS to enhance phytoextraction has been proposed for the remediation of heavy metal contaminated soils. Speciation of metals in soil solution in the presence of EDDS...
Schenkeveld, W.D.C., Dijcker, R., Reichwein, A.M., Temminghoff, E.J.M.
The application of FeEDDHA products is the most common practice to prevent or to remedy Fe chlorosis in crops grown on calcareous soils. These products consist of a mixture of EDDHA components...
Fest, P.M.J., Temminghoff, E.J.M., Comans, R.N.J.
In sandy soils the behavior of heavy metals is largely controlled by soil organic matter (solid and dissolved organic matter; SOC and DOC). Therefore, knowledge of the partitioning of organic matter...
Effects of dietary protein and energy levels on cow manure extretion and ammonia votalization (2008)
Reijs, J.W., Temminghoff, E.J.M.
Adjusting dietary composition is considered an effective way to reduce nutrient losses to the environment. The effects of various dietary protein and energy levels on manure composition (Ca, Mg, K,...
Kalis, E.J.J., Temminghoff, E.J.M., Town, R.M., Unsworth, E.R.
Received for publication October 12, 2007. The total metal content of the soil or total metal concentration in the soil solution is not always a good indicator for metal availability to plants....
Metal uptake by lolium perenne in contaminated soils using a four-steps approach (2007)
Kalis, E.J.J., Temminghoff, E.J.M., Visser, A.
Metal bioavailability and toxicity to aquatic organisms are greatly affected by variables such as pH, hardness, organic matter, and sediment acid-volatile sulfide (AVS). Sediment AVS, which reduces...
Predicting the phytoextraction duration to remediate heavy metal contaminated soils (2007)
Koopmans, G.F., Song, J., Temminghoff, E.J.M., Japenga, J.
The applicability of phytoextraction to remediate soils contaminated with heavy metals (HMs) depends on, amongst others, the duration before remediation is completed. The impact of changes in the HM...
Kalis, E.J.J., Temminghoff, E.J.M., Weng, L.
Among speciation techniques that are able to measure free metal ion concentrations, the Donnan membrane technique (DMT) has the advantage that it can measure many different free metal ion...
The behaviour of EDDHA isomers in soils as influenced by soil properties. (2007)
Schenkeveld, W.D.C., Reichwein, A.M., Temminghoff, E.J.M.
FeEDDHA products are applied to correct iron chlorosis in plants and consist of a mixture of EDDHA isomers chelated to iron. In this study such mixtures have been divided into four (groups of)...
Mobilization of heavy metals from contaminated paddy soil by EDDS, EDTA, and elemental sulfur (2007)
Wang, G., Koopmans, G.F., Song, J., Temminghoff, E.J.M., Luo, Y., Zhao, Q., ...
For enhanced phytoextraction, mobilization of heavy metals (HMs) from the soil solid phase to soil pore water is an important process. A pot incubation experiment mimicking field conditions was...
Groundwater chemistry of Al under Dutch acid sandy soils: effects of land use and depth. (2007)
Fest, E., Temminghoff, E.J.M., Griffioen, J., Grift, B.
Aluminium has received great attention in the second half of the 20th century, mainly in the context of the acid rain problem mostly in forest soils. In this research the effect of land use and depth...
Semenzin, E., Temminghoff, E.J.M., Marcomini, A.
The variability of species sensitivity distribution (SSD) due to contaminant bioavailability in soil was explored by using nickel as metal of concern. SSDs of toxicity test results of Avena sativa L....
Ammonia (NH3) volatilization decreases the N-nutrient value of livestock manure slurries and can lead to soil acidification and eutrophication problems. In this study the effect of three manure...
Kalis, E.J.J., Weng, L., Dousma, F., Temminghoff, E.J.M.
Metal toxicity is not related to the total but rather to the free or labile metal ion concentration. One of the techniques that can be used to measure several free metal ion concentrations...
Effects of humic acid and competing cations on metal uptake by Lolium perenne (2006)
Kalis, E.J.J., Temminghoff, E.J.M., Weng, L.
Within the biotic ligand model, which describes relationships between chemical speciation and metal binding at an organism's surface, multicomponent (long-term) metal uptake by plants has seldom been...
Comparison of analytical techniques for dynamic trace metal speciation in natural freshwaters (2006)
Sigg, L., Black, F., Buffle, J., Cao, J., Cleven, R., Davison, W., ...
Several techniques for speciation analysis of Cu, Zn, Cd, Pb, and Ni are used in freshwater systems and compared with respect to their performance and to the metal species detected. The analytical...
Unsworth, E.R., Warnken, K.W., Zhang, H., Davison, W., Black, F., Buffle, J., ...
Measurements of trace metal species in situ in a softwater river, a hardwater lake, and a hardwater stream were compared to the equilibrium distribution of species calculated using two models, WHAM...
Nitrogen Fractions in Arable Soils in Relation to Nitrogen Mineralization and Plant Uptake (2006)
Bregliani, M., Temminghoff, E.J.M., Hagg, E.S.
Nitrogen (N) as a major constituent of all plants is one of the most important nutrients. Minimizing input of mineral nitrogen fertilizer is needed to avoid harm to the environment. Optimal input of...
Measurement of ion speciation in animal slurries using the Donnan Membrane Technique (2005)
The availability of nutrients in animal slurry for plant uptake depends on the total content as well as on the forms in which these nutrients are present in slurry manure. A DMT-manure cell was...
Kinetic aspects of Donnan membrane technique for measuring free trace cation concentration (2005)
Addition of ion complexation ligands in the acceptor solution in the Donnan membrane technique (DMT) can lower its detection limit for free metal ion concentration in natural samples. In this paper,...
Proton buffering and metal leaching in sandy soils (2005)
Fest, P.M.J., Temminghoff, E.J.M., Griffioen, J.
Recent developments in acidification research focused on the leaching of metals from contaminated soil. In this paper the buffering of sandy soils upon acidification is studied in relation to the...
Wolthoorn, A., Temminghoff, E.J.M.
Subsurface aeration is used to oxidise Fe in situ in groundwater that is used to make drinking water potable. In a groundwater system with pH>7 subsurface aeration results in non-mobile Fe...
Wolthoorn, A., Temminghoff, E.J.M., Weng, L.
Subsurface aeration is the in situ oxidation of Fe from groundwater that is used to make drinking water potable. When subsurface aeration is applied to an anaerobic groundwater system with pH>7,...
Wolthoorn, A., Temminghoff, E.J.M.
Subsurface aeration is used to oxidise Fe in situ in groundwater to make the water potable. In a groundwater system with pH > 7, subsurface aeration results in a non-mobile Fe precipitate and mobile...
Weng, L., Wolthoorn, A., Lexmond, T.M., Temminghoff, E.J.M.
Acidity (pH) has been realized to be the most important soil characteristic that modulates bioavailability of heavy metals by affecting both the chemical speciation of metals in soil and the metal...
Saidou, A., Janssen, B.H., Temminghoff, E.J.M.
Four on-farm experiments examined whether modest applications of fertilizers in combination with prunings from native agroforestry trees would be an alternative to maintain the fertility of...
Effects of different treatments of cattle slurry manure on water-extractable phosphorus (2003)
Chapuis-Lardy, L., Temminghoff, E.J.M.
Cattle slurry manure applied to land increases the risk of phosphorus (P) movement to surface waters, which may lead to eutrophication. The water-extractable fraction of P in slurry manure is...
Verantwoorde toepassing van rundermest in graslandbodems (2003)
Verhoeven, F.P.M., Temminghoff, E.J.M., Bloem, J., ...
Melkveehouders verenigd in de Friese milieucoöperaties VEL en VANLA hebben in samenwerking met Wageningen UR een model ontwikkeld dat erin moet voorzien dat zij de door de overheid gestelde...
Bioavailability of metals in the Rhizosphere: Modelling and measurement of speciation (2003)
Hoffland, E., Weng, L., Gao, X., Kalis, E.J.J., Temminghoff, E.J.M.
Weng, L., Filius, J., Temminghoff, E.J.M.
The transport of inorganic and organic pollutants in water and soil can be strongly influenced by the mobility of natural dissolved organic matter (DOM). In this paper, the transport of a humic acid...
Weng, L., Temminghoff, E.J.M., Lofts, S., Tipping, E.
The complexation of heavy metals with dissolved organic matter (DOM) in the environment influences the solubility and mobility of these metals. In this paper, we measured the complexation of Cu, Cd,...
The study of Al speciation is of interest for the assessment of soil and water quality. For the measurement of "free" aluminum (Al3+), a recently developed Donnan membrane technique was tested by...
Measuring and modeling zinc and cadmium binding by humic acid (2002)
Osté, L.A., Temminghoff, E.J.M.
Free metal ions in aqueous and terrestrial systems strongly influence bioavailability and toxicity. Most analytical techniques determine the total metal concentration, including the metal ions bound...
Contribution of individual sorbents to the control of heavy metal activity in sandy soil (2001)
A multisurface model is used to evaluate the contribution of various sorption surfaces to the control of heavy metal activity in sandy soil samples at pH 3.7-6.1 with different sorbent contents. This...
Accurate measurement of the free metal ion is difficult, especially for trace metals present in very small concentrations (less than micromolar) in natural systems. The recently developed Donnan...
Determination of the chemical speciation of trace metals in aqueous systems by the WDMT (2000)
Temminghoff, E.J.M., Plette, A.C.C.
In order to determine the 'free' metal ion concentration in aqueous solutions the so-called Wageningen Donnan Membrane Technique (WDMT) has been developed. This involves a continuous flow system in...
Methodology for determinations of heavy metal standards for soil (1999)
Smallegange, R.A.J., Smits, J.G.C., Temminghoff, E.J.M., Plette, A.C.C., Bril, J.
Bioavailability of heavy metals in terrestrial and aquatic systems: a quantiative approach (1999)
Plette, A.C.C., Nederlof, M.M., Temminghoff, E.J.M., Van Riemsdijk, W.H.
Chemical speciation of heavy metals in sandy soils in relation to availability and mobility. (1998)
The environmental risk of heavy metals which are present in soil at a certain total content is highly dependent on soil properties. Chemical speciation is a comprehensive term for the distribution of...