Sorption and mobility of metronidazole, olaquindox, oxytetracycline and tylosin in soil

Rabølle, Mette; Spliid, Niels Henrik

doi:10.1016/s0045-6535(99)00442-7

Cited by 396 publications

(207 citation statements)

References 9 publications

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“…1 (2)), and Freundlich model q ¼ K F C n (K F is the Freundlich distribution coefficient and n is a nonlinear coefficient) parameters are summarized in Table S2, S3, and S4. Both Langmuir and Freundlich equations are suitable to fit the OTC sorption isotherms, as shown by high R 2 values (0.988 and 0.999), which is consistent with previous studies about OTC adsorption on soils (Rabolle and Spliid, 2000;Jones et al, 2005). The nonlinear sorption behavior of OTC on marine sediment is exhibited by Freundlich n ranged from 0.627 to 0.922, which are similar to the values reported by Xu and Li (2010).…”

Section: Sorption Isothermssupporting

confidence: 89%

Adsorption-desorption of oxytetracycline on marine sediments: Kinetics and influencing factors

Zhang

2016

Chemosphere

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h i g h l i g h t sOTC sorption on marine sediments were investigated using batch and stirred flow chamber (SFC) experiments. Second order kinetic model successfully described OTC adsorption/desorption kinetics. Adsorption/desorption rate is controlled by diffusive mass transfer process. Solution pH and salinity have large impact on the extent of OTC sorption. A weak hysteresis was observed in OTC adsorption-desorption process. a r t i c l e i n f o b s t r a c tTo reveal the kinetics and mechanisms of antibiotic adsorption/desorption processes, batch and stirred flow chamber (SFC) experiments were carried out with oxytetracycline (OTC) on two marine sediments. The OTC adsorption capacities of the marine sediments were relatively weak and related to their organic carbon (OC) and contents of fine particles. Sorption isotherms of OTC on marine sediment can be well described by both the Langmuir and Freundlich models. Langmuir adsorption maxima (q max ) and Freundlich distribution coefficients (K f ) increased with the decrease of salinity and pH, which indicated the importance of variable charged sites on sediment surfaces. A second order kinetic model successfully described adsorption and desorption kinetics of OTC and well reproduced the concentration change during stop-flow. The adsorption kinetic rates (k a ) for OTC under different experimental conditions ranged from 2.00 Â 10 À4 to 1.97 Â 10 À3 L (mg min) À1 . Results of SFC experiments indicated that diffusive mass transfer was the dominant mechanism of the time-dependent adsorption of OTC and its release from marine sediment was mildly hysteretic. The high desorption percentage (43e75% for LZB and 58 e75% for BHB) implied that binding strength of OTC on two marine sediments was weak. In conclusion, marine sediment characteristics and environmental factors such as salinity, pH, and flow rate are critical factors determine extent of OTC sorption on marine sediment and need to be incorporated in modeling fate and transport of OTC in marine environment.

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Section: Sorption Isothermssupporting

confidence: 89%

Adsorption-desorption of oxytetracycline on marine sediments: Kinetics and influencing factors

Zhang

2016

Chemosphere

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“…The same inefficient uptake of oxytetracycline in grass and watercress was reported by Chitescu et al (2013) in an uptake study conducted with antibiotic-amended soil. This provides further evidence that soil will retain highly sorptive antimicrobials, such as oxytetracycline, making them unavailable for plant uptake (Rabolle and Spliid, 2000). Depending on their chemical characteristics, antimicrobial uptake experiments in hydroponic systems may not adequately replicate behavior in soil systems.…”

Section: Antimicrobials In Lettuce and Soilmentioning

confidence: 99%

Concomitant uptake of antimicrobials and Salmonella in soil and into lettuce following wastewater irrigation

Sallach

Zhang

Hodges

et al. 2015

Environmental Pollution

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“…In a study on run-off from cattle feedlots in the United States, only trace amounts (up to 2 ng l −1 ) of ivermectin were indeed detected occasionally (Nessel et al, 1989). Oxytetracycline shows strong adsorption behaviour in soils with log Koc of 4-5 (Rabølle and Spliid, 2000). In an Italian study, no oxytetracycline was detected in drainage ditches adjacent to treated fields (LOD 1 g l −1…”

Section: Functional Validation For Surface Watermentioning

confidence: 96%

“…A dilution factor of only two may be very well applicable to direct emission in low-flow ditches. Given the high sorption coefficient of oxytetracycline of log Koc 4-5 l kg −1 (Rabølle and Spliid, 2000), dissipation towards the sediment would be expected, but this was not investigated by Schrap et al (2003). In another research, at the emission point of a tank-based aquaculture system for trout in northern Italy, a sediment concentration of 246 g kg −1 dry weight was found (Lalumera et al, 2004).…”

Section: Fish Cultivationmentioning

confidence: 99%

Validation of the exposure assessment for veterinary medicinal products

Montforts

2006

Science of The Total Environment

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Under the EU Directive 2004/28/EC, an environmental risk assessment of new veterinary medicinal products is required. Given the nature of risk assessment for new applications, there is a need to model exposure concentrations. Critical evaluations are essential to ensure that the use of models by regulators does not result in the propagation of misleading information. The empirical validations of soil exposure models, previously discussed in this journal, indicate that it is impossible to analyse the contribution of every model parameter to the variability in the predictions. In particular, the prediction of the slurry concentration is challenged by uncertainties concerning dilution, mixing and dissipation of residues. Surface water and groundwater models generated highly deviating results compared to the field results, questioning the usefulness of the available screening models. Animal husbandry, slurry handling and environmental conditions throughout Europe are considered in order to define realistic worst case scenarios, to be used in conjunction with distribution models for the environmental risk assessment of veterinary medicinal products at registration. Given the variability in manure management practice throughout Europe, a deterministic approach for the manure-to-soil model was selected. Both worst case and best case scenario were developed. Several modelling assumptions applied in the surface water exposure model for fish nursery effluent were validated against newly available data. Since the available data give no proof that a settling tank contributes to the removal of pesticides from waste water, it is recommended for risk assessment purposes to consider the contribution of the settling tank to removal of pesticides and medicines to be negligible. Surface water dilution factors may be considered to be rather small, a factor of 2, for low flow situations.

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Sorption and mobility of metronidazole, olaquindox, oxytetracycline and tylosin in soil

Cited by 396 publications

References 9 publications

Adsorption-desorption of oxytetracycline on marine sediments: Kinetics and influencing factors

Adsorption-desorption of oxytetracycline on marine sediments: Kinetics and influencing factors

Concomitant uptake of antimicrobials and Salmonella in soil and into lettuce following wastewater irrigation

Validation of the exposure assessment for veterinary medicinal products

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