Iron colloids reduce the bioavailability of phosphorus to the green alga Raphidocelis subcapitata

Baken, Stijn; Nawara, Sophie; Moorleghem, Christoff Van; Smolders, Erik

doi:10.1016/j.watres.2014.04.010

Cited by 45 publications

(29 citation statements)

References 41 publications

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“…Locating and apportionment of the sources and fluxes of the dissolved vs. collodial P conveyed by rivers in landscapes remains a longstanding and fundamental challenge for catchment scientists (see McClain et al, 2003;Bol et al, 2016;Gottselig et al, 2017b;Missong et al, 2018), with major implications for land management and nutrient pollution mitigation strategies. Colloidal P is characterized as dissolved P in most routine water quality monitoring programs (Gottselig et al, 2017a), however, it is believed to have reduced bioavailability compared to the truly dissolved P (Baken et al, 2014). Furthermore, colloids which consist of organic matter, Fe/Al oxyhydroxides and clay minerals (Jiang et al, 2015a;Missong et al, 2017) are important P carriers in and to surface waters (Gottselig et al, 2014(Gottselig et al, , 2017a and thus should be more explicitly accounted for in P budgets.…”

Section: Difficulties In Predictions Of Dissolved/colloidal/particulamentioning

confidence: 99%

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

et al. 2018

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Section: Difficulties In Predictions Of Dissolved/colloidal/particulamentioning

confidence: 99%

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

et al. 2018

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“…Concern over the possible environmental and toxicological impacts of increasingly manufactured and used engineered nanomaterials (ENMs) has stimulated research on the potential for plant (cell) uptake, accumulation and transformation of ENMs -Materials that several decades ago might have been simply described as dissolved by virtue of their ability to pass through a 0.45 micron membrane (Dietz & Herth, 2011;Scheringer, 2008;USEPA, 1996;von Moos et al, 2014). Plant-ENM interactions, in the process, have led plant biologists to rethink the role of (nano)particles as sorbents and/or sources of heavy metals, pesticides and essential nutrients to plants and phytoplankton (Baken et al, 2014;Santner et al, 2012;Schwab et al, 2013;Van Moorleghem et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Barriers, pathways and processes for uptake, translocation and accumulation of nanomaterials in plants – Critical review

et al. 2015

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Uptake, transport and toxicity of engineered nanomaterials (ENMs) into plant cells are complex processes that are currently still not well understood. Parts of this problem are the multifaceted plant anatomy, and analytical challenges to visualize and quantify ENMs in plants. We critically reviewed the currently known ENM uptake, translocation, and accumulation processes in plants. A vast number of studies showed uptake, clogging, or translocation in the apoplast of plants, most notably of nanoparticles with diameters much larger than the commonly assumed size exclusion limit of the cell walls of ∼5-20 nm. Plants that tended to translocate less ENMs were those with low transpiration, drought-tolerance, tough cell wall architecture, and tall growth. In the absence of toxicity, accumulation was often linearly proportional to exposure concentration. Further important factors strongly affecting ENM internalization are the cell wall composition, mucilage, symbiotic microorganisms (mycorrhiza), the absence of a cuticle (submerged plants) and stomata aperture. Mostly unexplored are the roles of root hairs, leaf repellency, pit membrane porosity, xylem segmentation, wounding, lateral roots, nodes, the Casparian band, hydathodes, lenticels and trichomes. The next steps towards a realistic risk assessment of nanoparticles in plants are to measure ENM uptake rates, the size exclusion limit of the apoplast and to unravel plant physiological features favoring uptake.

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“…They considerably determine the partitioning and thus the availability and mobility of nutrients (e.g. PO 4 3-, Baken et al (2014)) and contaminants (e.g. As, Fritzsche et al (2011)) in aquatic environments and in porous media.…”

Section: Introductionmentioning

confidence: 99%

Structure and composition of Fe–OM co-precipitates that form in soil-derived solutions

Fritzsche

Schröder

Wieczorek

et al. 2015

Geochimica et Cosmochimica Acta

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Iron oxides represent a substantial fraction of secondary minerals and particularly affect the reactive properties of natural systems in which they formed, e.g. in soils and sediments. Yet, it is still obscure how transient conditions in the solution will affect the properties of in situ precipitated Fe oxides. Transient compositions, i.e. compositions that change with time, arise due to predominant non-equilibrium states in natural systems, e.g. between liquid and solid phases in soils. In this study, we characterize Fe-OM co-precipitates that formed in pH-neutral exfiltrates from anoxic topsoils under transient conditions. We applied soil column outflow experiments, in which Fe 2+ was discharged with the effluent from anoxic soil and subsequently oxidized in the effluent due to contact with air. Our study features three novel aspects being unconsidered so far: 3

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Iron colloids reduce the bioavailability of phosphorus to the green alga Raphidocelis subcapitata

Cited by 45 publications

References 41 publications

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

Challenges of Reducing Phosphorus Based Water Eutrophication in the Agricultural Landscapes of Northwest Europe

Barriers, pathways and processes for uptake, translocation and accumulation of nanomaterials in plants – Critical review

Structure and composition of Fe–OM co-precipitates that form in soil-derived solutions

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