Comparison of preconcentration methods of the colloidal phase of a uranium-containing soil suspension

Maria, Emmanuelle; Crançon, Pierre; Coustumer, Philippe Le; Bridoux, Maxime C.; Lespès, Gaëtane

doi:10.1016/j.talanta.2019.120383

Cited by 9 publications

(4 citation statements)

References 38 publications

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“…Furthermore, mobile colloids act as a third phase, apart from the immobile solid constituents and the mobile aqueous phase, largely controlling the transport of pollutants in many environmental compartments (McCarthy and Zachara 1989;de Jonge et al 2004;Baumann et al 2006;Lead and Wilkinson 2006). Specifically, the mobility of colloidal U is favored by Fe, Al, minerals (e.g., clay), carbonbased particles (organic and inorganic) and macromolecules, pH-dependent sorption/desorption interactions, and the formation of alkali-and alkaline-earth uranates (Claveranne-Lamolère et al 2009;Claveranne-Lamolère et al 2011;Dreissig et al 2011;Bots et al 2014;Wang et al 2014;Chen et al 2018;Ge et al 2018;Harguindeguy et al 2018;Maria et al 2020). For example, Yang et al (2013) observed that the desorption of U from colloidal suspensions is influenced by interactions between metal/silicon oxides and humic acids, depending on their composition.…”

Section: +mentioning

confidence: 99%

Distribution, behavior, and erosion of uranium in vineyard soils

Campos

Blanché

Jungkunst

et al. 2021

Environ Sci Pollut Res

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Phosphate fertilization contributes to an input of uranium (U) in agricultural soils. Although its accumulation and fate in agricultural soils have been previously studied, its colloidal transport and accumulation along slopes through erosion have been studied to a lesser extent in viticulture soils. To bridge this gap, the contents and potential mobility of U were investigated in vineyard model soils in the Rhineland-Palatinate region, Germany. In addition to elevated U contents, U was expected to associate with colloids and subject to erosion, thus accumulating on slope foots and in soils with fine structure, and reflecting a greater variability. Moreover, another expectation was the favorable erosion/mobility of U in areas with greater carbonate content. This was tested in three regional locations, at different slope positions and through soil horizon depths, with a total of 57 soil samples. The results show that U concentrations (0.48–1.26 ppm) were slightly higher than proximal non-agricultural soils (0.50 ppm), quite homogenous along slope positions, and slightly higher in topsoils. Assuming a homogeneous fertilization, the vertical translocation of U in soil was most probably higher than along the slope by erosion. In addition, carbonate content and soil texture correlated with U concentrations, whereas other parameters such as organic carbon and iron contents did not. The central role of carbonate and soil texture for the prediction of U content was confirmed using decision trees and elastic net, although their limited prediction power suggests that a larger sample size with a larger range of U content is required to improve the accuracy. Overall, we did not observe neither U nor colloids accumulating on slope foots, thus suggesting that soils are aggregate-stable. Lastly, we suggested considering further soil parameters (e.g., Ca2+, phosphorus, alkali metals) in future works to improve our modelling approach. Overall, our results suggest U is fortunately immobile in the studied locations.

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Section: +mentioning

confidence: 99%

Distribution, behavior, and erosion of uranium in vineyard soils

Campos

Blanché

Jungkunst

et al. 2021

Environ Sci Pollut Res

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“…A rotary shaker (Intelli-Mixer RM-1, Latvia) was used to prepare leachates as follows: 10 g of dried and sieved (2 mm stainless steel sieve) soil samples were mixed with 100 mL of ultrapure water; the mixture was stirred at 20 rpm for 24 h then decanted for 48 h at 4 • C away from light; finally, the supernatant was collected and filtered at 0.45 µm [11,33].…”

Section: Instruments and Operating Conditionsmentioning

confidence: 99%

“…Separation methods coupled online with detectors are therefore the most relevant to use [8][9][10]. They are also more respectful of the physical and chemical integrity of colloidal assemblies and much better resolved than the batch ultrafiltration methods [11]. Among these online size separation methods, Asymmetric Flow Field-Flow Fractionation (AF4) has a special place.…”

Section: Introductionmentioning

confidence: 99%

Copper Speciation in Wine Growing-Drain Waters: Mobilization, Transport, and Environmental Diffusion

De Carsalade du Pont,

Ben Azzouz,

El Hadri

et al. 2024

Environments

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Copper (Cu) has been used to treat vines for a long time, which has led to its accumulation in vineyard soils. In the present work, the mobilization of copper from these soils and its transport, and diffusion outside the plots by drain water were investigated. For this, the distribution of copper between the dissolved and colloidal phases, and within the colloidal phase, of these waters was determined using an investigation strategy based on the coupling between a size separation technique, asymmetric flow field-flow fractionation, and several detectors. First, the total copper concentrations in water from different drains were monitored over a period of 2 years: Cu was mainly found in the fraction of < 450 nm. Then, the distribution of copper on the size continuum was more closely studied in water from one of the drains, sampled over a winter period. Between 45 and 75% of Cu was found in the 2–450 nm colloidal fraction. The <450 nm colloidal phase of the drain waters was found to be mainly composed of humic acids (~15 to 60 mg L−1) and clay-rich particles (~100 to 650 mg (Al) L−1). These particles also contained (hydr)oxides of iron and manganese. The concentrations of Fe and Mn were approximately 100 to 200 times lower than those of Al. The majority of humic acids had an apparent molar mass of ≤ 10 kDa. They were distributed along the size continuum: (i) in a population with an average size of ~20 nm, probably consisting of supramolecular entities, and (ii) associated with clay-rich particles with a size of ~120–200 nm. Copper was found to be complexed with humic acids and associated with clays via clay-humic complexes. Copper mobilization from the soil to the water and its transport to the drain water appeared governed by the soil humidity level and the rainfall.

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“…This is a result of their small size, commonplaceness, enormous specific surface area, and capacity to cling to the surface of aqueous solutions for extended periods of time. Analytical methods for characterizing naturally occurring colloidal objects have been developed as a result of the need to comprehend the behavior and fate of trace components [3]. The ability to synthesize nano-scale items has vastly increased since the early 2000s.…”

Section: Introductionmentioning

confidence: 99%

Current Progress and Open Challenges for Combined Toxic Effects of Manufactured Nano-Sized Objects (MNO’s) on Soil Biota and Microbial Community

et al. 2023

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Soil is a porous matrix containing organic matter and minerals as well as living organisms that vary physically, geographically, and temporally. Plants choose a particular microbiome from a pool of soil microorganisms which helps them grow and stay healthy. Many ecosystem functions in agrosystems are provided by soil microbes just like the ecosystem of soil, the completion of cyclic activity of vital nutrients like C, N, S, and P is carried out by soil microorganisms. Soil microorganisms affect carbon nanotubes (CNTs), nanoparticles (NPs), and a nanopesticide; these are called manufactured nano-objects (MNOs), that are added to the environment intentionally or reach the soil in the form of contaminants of nanomaterials. It is critical to assess the influence of MNOs on important plant-microbe symbiosis including mycorrhiza, which are critical for the health, function, and sustainability of both natural and agricultural ecosystems. Toxic compounds are released into rural and urban ecosystems as a result of anthropogenic contamination from industrial processes, agricultural practices, and consumer products. Once discharged, these pollutants travel through the atmosphere and water, settling in matrices like sediments and groundwater, potentially rendering broad areas uninhabitable. With the rapid growth of nanotechnology, the application of manufactured nano-objects in the form of nano-agrochemicals has expanded for their greater potential or their appearance in products of users, raising worries about possible eco-toxicological impacts. MNOs are added throughout the life cycle and are accumulated not only in the soils but also in other components of the environment causing mostly negative impacts on soil biota and processes. MNOs interfere with soil physicochemical qualities as well as microbial metabolic activity in rhizospheric soils. This review examines the harmful effect of MNOs on soil, as well as the pathways used by microbes to deal with MNOs and the fate and behavior of NPs inside the soils.

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Comparison of preconcentration methods of the colloidal phase of a uranium-containing soil suspension

Cited by 9 publications

References 38 publications

Distribution, behavior, and erosion of uranium in vineyard soils

Distribution, behavior, and erosion of uranium in vineyard soils

Copper Speciation in Wine Growing-Drain Waters: Mobilization, Transport, and Environmental Diffusion

Current Progress and Open Challenges for Combined Toxic Effects of Manufactured Nano-Sized Objects (MNO’s) on Soil Biota and Microbial Community

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