Sorption and desorption of selected non-steroidal anti-inflammatory drugs in an agricultural loam-textured soil

Zhang, Y.; Price, G.W.; Jamieson, Rob; Burton, David L.; Khosravi, K.

doi:10.1016/j.chemosphere.2017.02.027

Cited by 72 publications

(29 citation statements)

References 53 publications

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“…Increased sorption of carbamazepine can be possibly explained by ionization of molecules due to dipole -induced dipole interaction between nonpolar and polar molecules in solution. It should be noted, that Zhang et al (2017) also observed slightly greater absorption of ibuprofen and greater desorption affinity of ibuprofen (IBF), naproxen (NPX), keprofen (KTF) and diclofenac (DCF) when applied in mixture to the loam-texture soil (pH of 6.1), despite that molecules of all four chemicals were negatively charged (pKa acidic: 4.91 -IBF, 4.15 -NPX, 4.45 -KTF, and 4.15 -DCF). They suggested that through multilayer cooperative adsorption, DCF was chemically adsorbed to the limited binding sites on soil surface, whereas IBF NPX and KTF saturated synergistically on the relatively weaker binding sites on the firsts layer of soil surface and formed absorbable layers to accommodate more molecules.…”

Section: Resultsmentioning

confidence: 99%

“…Dušek et al 2015) low due to repulsion between negatively charged molecule and mostly negatively charged soil surface. Sorption of pharmaceuticals onto soil components can be reduced due to competition between molecules of different compounds when applied in their mixture (Conkle et al 2010;Lerman et al 2013;Jung et al 2015;Carrillo et al 2016;Wu et al 2017) or increased due to synergy of compounds in soil solution Zhang et al 2017).…”

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confidence: 99%

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Sorption of atenolol, sulfamethoxazole and carbamazepine onto soil aggregates from the illuvial horizon of the Haplic Luvisol on loess

Fér¹,

Kodešová²,

Golovko³

et al. 2018

Soil Water Res.

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Fér M., Kodešová R., Golovko O., Schmidtová Z., Klement A., Nikodem A., Kočárek M., Grabic R. (2018): Sorption of atenolol, sulfamethoxazole and carbamazepine onto soil aggregates from the illuvial horizon of the Haplic Luvisol on loess. Soil & Water Res., 13: 177−183.The leakage of pharmaceuticals present in soils towards groundwater is largely controlled by sorption of those compounds in soils. In some soils, soil aggregates are covered by coatings, which may have considerably different composition in comparison to that in an inner part of the aggregates. The aim of this study was to evaluate the sorption of three pharmaceuticals, which were applied in single or all compounds solutions, onto soil samples taken from the Bt horizon of a Haplic Luvisol. Analyses were performed on three types of disturbed soil samples: (1) entire aggregates, (2) aggregates from which coatings were removed, and (3) clay-organic coatings. Sorption of atenolol onto material from coatings was slightly higher than that onto material from the inner parts of the aggregates. On the other hand, sorption of sulfamethoxazole onto material from the coatings was lower than that from the aggregate interior. Both associates with a dominant fraction of clay particles (that are mostly negatively charged) in the coatings in comparison to soil composition in interiors and thus larger cation exchange capacity, which increased sorption of the positively charged atenolol and decreased sorption of the negatively charged sulfamethoxazole. Sorption of carbamazepine, which was in neutral form, did not substantially differ. The sorption of all three compounds did not decrease due to the competition between these compounds for the same sorption sites when applied simultaneously. Atenolol sorption was similar for both applications. Sorption of sulfamethoxazole increased when applied in solution with the other two compounds in comparison to its negligible sorption measured for the single compound solution likely due to sorption of the positively charged molecules of atenolol onto the negatively charged surface of soil components and reduction of repulsion between the soil components and the negatively charged molecules of sulfamethoxazole. Carbamazepine sorption also increased probably due to ionization of molecules due to dipole -induced dipole interaction between non-polar and polar molecules in solution.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Sorption of atenolol, sulfamethoxazole and carbamazepine onto soil aggregates from the illuvial horizon of the Haplic Luvisol on loess

Fér¹,

Kodešová²,

Golovko³

et al. 2018

Soil Water Res.

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“…Later, both traditional and modified coaxial electrospinning processes were carried out to tailor the within-fiber drug distribution intentionally. Ibuprofen (IBU) was exploited as the model drug because it is one of the most commonly used non-steroidal anti-inflammatory drugs (NSAIDs), it has a large consumption all over the world, and it is a typical poorly water-soluble drug utilized as a model in literature (Li et al, 2013;Zhang et al, 2017;Shen et al, 2017). Thus, it would be a suitable representative for investigating the influence of drug distribution on its release behavior.…”

Section: Introductionmentioning

confidence: 99%

Influence of the drug distribution in electrospun gliadin fibers on drug-release behavior

et al. 2017

European Journal of Pharmaceutical Sciences

116

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Drug distribution within its carrier in a solid dosage form often generates a profound influence on its release profile, particularly when the physicochemical properties of the carrier are exploited to manipulate drug release behavior. In this job, two different types of distributions of a model drug ibuprofen (IBU) within a protein gliadin in their electrospun nanofibers were intentionally created. One was homogeneous distribution in the monolithic fibers fabricated using a modified coaxial process, and the other one was heterogeneous distribution in the core/shell fibers prepared through a traditional coaxial process. SEM observations clearly demonstrated the different distributions of IBU within gliadin in the two kinds of nanofibers although both of them had smooth surfaces and linear morphology. XRD results showed that IBU was amorphously distributed in the monolithic fibers, but that some IBU crystalline lattices presented in the core/shell fibers. FTIR and RM spectra suggested that gliadin had good compatibility with IBU. In vitro dissolution tests verified that the gliadin nanofibers with a heterogeneous drug distribution could provide a better sustained release profile than its counterpart in terms of initial burst release and sustained release time period. Both the fiber formation and drug-controlled release mechanisms are suggested. The present study demonstrated a concept that drug distribution with the medicated nanomaterials can be exploited as a tool to optimize the drug sustained release profile.

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“…where, De (mg•kg -1 ) and Qe (mg•kg -1 ) are solid-phase solute concentrations for desorption and sorption processes, respectively (Zhang et al, 2017). An average value of desorption ratio (Davg) was defined as the average ratio of the desorbed phosphate to the total phosphate adsorbed by the adsorbents.…”

Section: Isothermal Adsorption and Desorptionmentioning

confidence: 99%

Optimum biochar preparations enhance phosphorus availability in amended Mollisols of Northeast China

Han

Chen

Wang

et al. 2019

Chil. j. agric. res.

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Biochar amendment to soils can improve soil P availability, but details on the optimum application of biochar to black soils in Northeast China are limited. Three types of biochar were produced at six pyrolysis temperatures (between 200 and 700 °C) and then added to black soil samples. P adsorption-desorption isotherms were fitted by the Langmuir model to evaluate the changes in soil P adsorption-desorption after biochar amendment. Changes in P adsorption and desorption depended on biochar feedstock type and pyrolysis temperature. When pyrolysis temperature increased up to 400 °C, P sorption maximum (Qm) of soybean pod (SP) and soybean straw (SS) biochar-amended soils were enhanced from 855.65 and 428.84 mg kg-1 to 1666.67 and 1547.62 mg kg-1 , respectively, while a further increase in the pyrolysis temperature lowered the adsorption capacity. However, P adsorption of corncob (CC) biochar amended soils declined from 1428.57 mg kg-1 to 556.70 mg kg-1 as pyrolysis temperature increased. Higher P desorption in SP and SS compared with CC indicated that SP and SS biochar produced at higher than 400 °C pyrolysis temperatures were considered to be the optimum biochar to enhance P availability in the black soils of Northeast China.

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Sorption and desorption of selected non-steroidal anti-inflammatory drugs in an agricultural loam-textured soil

Cited by 72 publications

References 53 publications

Sorption of atenolol, sulfamethoxazole and carbamazepine onto soil aggregates from the illuvial horizon of the Haplic Luvisol on loess

Sorption of atenolol, sulfamethoxazole and carbamazepine onto soil aggregates from the illuvial horizon of the Haplic Luvisol on loess

Influence of the drug distribution in electrospun gliadin fibers on drug-release behavior

Optimum biochar preparations enhance phosphorus availability in amended Mollisols of Northeast China

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