Simultaneous evaluation of kinetic release of labile arsenic and phosphorus in agricultural soils using cerium oxide-based DGT

Ren, Suyu; Wang, Yi; Sun, Dong; Bekele, Tadiyose Girma; Dong, Fan; Zhao, Hongxia; Tan, Feng

doi:10.1016/j.scitotenv.2021.151039

Cited by 10 publications

(3 citation statements)

References 46 publications

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“…Further dedicated studies are needed to confirm this phenomenon. Another possible reason might be that the model used does not adequately simulate all processes in the soil because one study has indicated that the multiple kinetic stages of adsorption/desorption cannot be adequately simulated using the DIFS model. In general, K dl reflects the size of the labile pool in the soil solid phase, and t c reflects the resupply rate of chemicals from the soil solid phase to the solution phase; therefore, K dl ultimately determines the change of the R value after a long deployment time, while t c affects the magnitude of the R value in the short term, resulting in an apparent steep decline trend in the early stage, in line with a previous study for antibiotics …”

Section: Resultsmentioning

confidence: 99%

In Situ Insight into the Availability and Desorption Kinetics of Per- and Polyfluoroalkyl Substances in Soils with Diffusive Gradients in Thin Films

Huang

Liu

et al. 2023

Environ. Sci. Technol.

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The physicochemical exchange dynamics between the solid and solution phases of per-and polyfluoroalkyl substances (PFAS) in soils needs to be better understood. This study employed an in situ tool, diffusive gradients in thin films (DGT), to understand the distribution and exchange kinetics of five typical PFAS in four soils. Results show a nonlinear relationship between the PFAS masses in DGT and time, implying that PFAS were partially supplied by the solid phase in all of the soils. A dynamic model DGT-induced fluxes in soils/sediments (DIFS) was used to interpret the results and derive the distribution coefficients for the labile fraction (K dl ), response time (t c ), and adsorption/desorption rates (k 1 and k −1 ). The larger labile pool size (indicated by K dl ) for the longer chain PFAS implies their higher potential availability. The shorter chain PFAS tend to have a larger t c and relatively smaller k −1 , implying that the release of these PFAS in soils might be kinetically limited but not for more hydrophobic compounds, such as perfluorooctanesulfonic acid (PFOS), although soil properties might play an important role. K dl ultimately controls the PFAS availability in soils, while the PFAS release from soils might be kinetically constrained (which may also hold for biota uptake), particularly for more hydrophilic PFAS.

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Section: Resultsmentioning

confidence: 99%

In Situ Insight into the Availability and Desorption Kinetics of Per- and Polyfluoroalkyl Substances in Soils with Diffusive Gradients in Thin Films

Huang

Liu

et al. 2023

Environ. Sci. Technol.

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“… Mohseni et al ( 2022 ) As, P DGT with cerium oxide resin gel CeO 2 -DGT were deployed in four types of farmland soils over 400 h to study the interactions between P and As during their migration behaviors. These were coupled with dynamic DGT induced flux model in soils - The collected quantities of As in the DGT tools proved negative correlation with those of P, suggesting their competitive adsorption on soil solids Ren et al ( 2022 ) Cd, Cr, Cu, Pb DGT with Chelex binding gel Greenhouse experiment on contaminated soil amended with biochar and compost, cultivated with lettuce. BCR sequential extraction, pore water extraction, and DGT were used to assess bioavailability of Cd, Cr, Cu and Pb and the effect of amendments on this Lettuce The amendment of soil with compost and biochar significantly decreases metal uptake by lettuce.…”

Section: Dgt Applications For Heavy Metal Labile Fractions In Soilmentioning

confidence: 99%

“…Another element in soil extensively studied by DGT was As. Ren et al ( 2022 ) studied the absorption/desorption of As in farmland soils, together with soil P. Cerium oxide–based DGTs were used for the simultaneous determination of As and P in four different categories of agricultural soils in order to investigate As and P migration behaviors. It was reported that both P and As can attain the equilibrium of resupply in 0.7–18 min under DGT depletion.…”

Section: Dgt Applications For Heavy Metal Labile Fractions In Soilmentioning

confidence: 99%

Use of diffusive gradients in thin-film technique to predict the mobility and transfer of nutrients and toxic elements from agricultural soil to crops—an overview of recent studies

Senila,

Kovacs

2024

Environ Sci Pollut Res

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The purpose of this review was to survey the recent applications of the diffusive gradients in thin films (DGT) technique in the assessment of mobility and bioavailability of nutrients and potentially toxic elements (PTEs) in agricultural soil. Many studies compared the capabilities of the DGT technique with those of classical soil chemical extractants used in single or sequential procedures to predict nutrients and PTE bioavailability to crops. In most of the published works, the DGT technique was reported to be superior to the conventional chemical extraction and fractionation methods in obtaining significant correlations with the metals and metalloids accumulated in crops. In the domain of nutrient bioavailability assessment, DGT-based studies focused mainly on phosphorous and selenium labile fraction measurement, but potassium, manganese, and nitrogen were also studied using the DGT tool. Different DGT configurations are reported, using binding and diffusive layers specific for certain analytes (Hg, P, and Se) or gels with wider applicability, such as Chelex-based binding gels for metal cations and ferrihydrite-based hydrogels for oxyanions. Overall, the literature demonstrates that the DGT technique is relevant for the evaluation of metal and nutrient bioavailability to crops, due to its capacity to mimic the plant root uptake process, which justifies future improvement efforts.

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Assessing the bioaccessibility of aluminum in an acidic soil with the diffusive gradients in thin films (DGT) and DIFS

Guo,

Li,

Shi

et al. 2024

Plant Soil

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Simultaneous evaluation of kinetic release of labile arsenic and phosphorus in agricultural soils using cerium oxide-based DGT

Cited by 10 publications

References 46 publications

In Situ Insight into the Availability and Desorption Kinetics of Per- and Polyfluoroalkyl Substances in Soils with Diffusive Gradients in Thin Films

In Situ Insight into the Availability and Desorption Kinetics of Per- and Polyfluoroalkyl Substances in Soils with Diffusive Gradients in Thin Films

Use of diffusive gradients in thin-film technique to predict the mobility and transfer of nutrients and toxic elements from agricultural soil to crops—an overview of recent studies

Assessing the bioaccessibility of aluminum in an acidic soil with the diffusive gradients in thin films (DGT) and DIFS

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