Desorption kinetics of tetracyclines in soils assessed by diffusive gradients in thin films

Ren, Suyu; Wang, Yi; Cui, Ying; Wang, Yan; Wang, Xiaochun; Chen, Jingwen; Tan, Feng

doi:10.1016/j.envpol.2019.113394

Cited by 21 publications

(11 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been successfully used for studying exchange kinetics of metals and nutrients − and to interpret DGT measurements in soils and sediments in terms of labile pool size and resupply kinetic parameters. Only two studies have been published, using DGT and the DIFS model for organic compounds and both of them investigated antibiotics in soils. , These studies on inorganics and antibiotics lay the foundation for our use of DGT to assess pesticide availability, resupply kinetics and labile pool size in soils and sediments. Depending on the scientific questions and objectives, environmentally realistic and elevated concentrations can be studied with DGT, either in field soils brought to the laboratory or in spiked systems.…”

Section: Introductionmentioning

confidence: 99%

Use of the Dynamic Technique DGT to Determine the Labile Pool Size and Kinetic Resupply of Pesticides in Soils and Sediments

Han

Luo

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

The diffusive gradients in thin films (DGT) technique has been successfully and widely applied to investigate the labile fractions of inorganic contaminants in soils and sediments, but there have been almost no applications to organic contaminants. Here we developed and tested the approach for the pesticide Atrazine (ATR) in a controlled soil experiment and in situ in an intact lake sediment core. The soil study explored the relationships between soil solution, DGT measured labile ATR and solvent extractable ATR in dosed soils of different organic matter, pH status and incubation times. The results are further interpreted using the DIFS (DGT-induced fluxes in soils and sediments) model. Resupply of ATR to the soil solution was partially sustained by the solid phase in all the soils. This was due to small labile pool size and slow kinetics, with soil pH being an important controlling factor. The in situ sediment study successfully used a DGT probe to examine labile ATR distribution through the core on the subcm scale. It demonstrated–for the first time–an easy to use in situ technique to investigate the effects of redox on resupply kinetics and biogeochemical processes of trace organic contaminants in sediments.

show abstract

Section: Introductionmentioning

confidence: 99%

Use of the Dynamic Technique DGT to Determine the Labile Pool Size and Kinetic Resupply of Pesticides in Soils and Sediments

Han

Luo

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Regardless of the individual PFAS, the minimum C DGT values were found for soil D after 480 h, while the maximum values were in soil A after 10 h. The resulting R (C DGT /C d ) is an important indicator of the extent of analyte depletion at the DGT interface. All R values were higher than 0.1 (except PFBA and PFOA in soil C at 360 h) but less than 0.95, similar to other chemicals, such as antibiotics, 29,33 bisphenols, 53 and pesticides, 54 again suggesting that PFAS in soil solution was only partially resupplied by the solid phase because a fully sustained case would result in R close to 1. At a given time, the R values tended to be in this order: PFOS > PFOA > PFHxA ≈ PFBS > PFBA, regardless of soil type.…”

Section: Uptake and Measurement Of Pfas By Dgtmentioning

confidence: 88%

“…However, they are in the lower range of available k −1 values (from 2.3 × 10 −6 to 2.3 × 10 −4 s −1 ) for other organics (antibiotics and bisphenols) in soils with the DGT method. 29,33,53 For soils A and D, k −1 decreased with an increasing perfluorinated chain length for PFCAs and PFSAs, respectively, implying that, for PFAS with short chain lengths, there are more significant kinetic limitations for their release from the solid phase into the solution phase in soils. This is again consistent with a recent field study for PFAS.…”

Section: Lability and Release Kinetics Of Pfas In Soilsmentioning

confidence: 99%

“…As seen in Figure 2, at an early stage, t c mainly affects the change of R, resulting in a steep decline, consistent with previous studies for antibiotics, bisphenols, and pesticides. 29,33,53,54 The t c values ranged from 3.4 min (PFOS in soil B) to 529 min (PFBA in soil C) (Table 1). Smaller t c means that the response to the DGT uptake is fast; in general, smaller t c values were obtained for the PFSAs compared to the PFCAs (except PFBS in soil D, which is not readily explained), which implies that PFSAs in the soil solution were resupplied quickly by the solid phase compared to corresponding PFCAs with a similar chain length.…”

Section: Lability and Release Kinetics Of Pfas In Soilsmentioning

confidence: 99%

“…Our present results were also comparable to the k 1 values for other available organic chemicals using the DGT method, such as antibiotics, pesticides, and bisphenols (from 1.6 × 10 −5 to 7.8 × 10 −3 s −1 ). 29,33,53 However, the k −1 values for PFAS in soils are lacking in the available literature, with only one study providing values ranging from 5.6 × 10 −8 s −1 (PFHxS) to 3.3 × 10 −7 s −1 (PFBS) for six PFAAs (including PFHxA and PFBS) in a batch experiment, 28 which are lower than our results, probably as a result of the longer time in the field-aged soils. However, they are in the lower range of available k −1 values (from 2.3 × 10 −6 to 2.3 × 10 −4 s −1 ) for other organics (antibiotics and bisphenols) in soils with the DGT method.…”

Section: Lability and Release Kinetics Of Pfas In Soilsmentioning

confidence: 99%

See 2 more Smart Citations

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.

View full text Add to dashboard Cite

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.

show abstract

Predicting the Kinetics of Resupply of Organic Pollutants from Sediments Using Diffusive Gradients in Thin Film Samplers and their Bioavailability to Aquatic Invertebrates

Ji,

Arenas,

Perez

et al. 2023

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

The present study used diffusive gradients in thin film (DGT) samplers deployed in situ at a wastewater‐impacted site (Clarkboro Ferry) for 20 days to develop a predictive model between time‐weighted mean concentrations of seven selected antipsychotic compounds in water and those in resident benthic invertebrates, specifically crayfish (Faxonius virilis). The model was further combined with a model of desorption of antipsychotic compounds to predict kinetics at the sediment–water interface. Antipsychotic compounds were mostly detected in adult crayfish and internal concentrations were similar among targeted compounds, except for lesser concentrations of duloxetine. The model, based on the mass balance of organic chemicals, to predict uptake by organisms exhibited good agreement with measured values (R2 = 0.53−0.88), except for venlafaxine (R2 = 0.35). At the sediment–water interface, positive fluxes were observed for antipsychotic compounds and the results from DGT‐induced fluxes in sediments (DIFS) coupled with equilibrium hydroxyl‐β‐cyclodextrin extraction further indicated partial resupply of antipsychotic compounds from sediments to the aqueous phase, despite the labile pool being relatively limited. The results of the present study affirm that DGT techniques can be used as a predictive tool for contamination in benthic invertebrates and can simulate the ability of contaminant resupply from sediments. Environ Toxicol Chem 2023;42:1696–1708. © 2023 SETAC.

show abstract

Desorption kinetics of tetracyclines in soils assessed by diffusive gradients in thin films

Cited by 21 publications

References 50 publications

Use of the Dynamic Technique DGT to Determine the Labile Pool Size and Kinetic Resupply of Pesticides in Soils and Sediments

Use of the Dynamic Technique DGT to Determine the Labile Pool Size and Kinetic Resupply of Pesticides in Soils and Sediments

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

Predicting the Kinetics of Resupply of Organic Pollutants from Sediments Using Diffusive Gradients in Thin Film Samplers and their Bioavailability to Aquatic Invertebrates

Contact Info

Product

Resources

About