Enhanced malachite green photolysis at the colloidal-aqueous interface

Kaylor, Lukas J; Skelly, P.; Alsarrani, Mansour; Subir, Mahamud

doi:10.1016/j.chemosphere.2021.131953

Cited by 7 publications

(5 citation statements)

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“…SFO–SFO models are used to describe the formation of X11719474 in photolysis and the soil degradation of sulfoxaflor, with χ 2 < 15% and R 2 > 0.9 . After 96 h of sulfoxaflor photolysis, the concentrations of the three compounds were in the order X11719474 < X11718922 < X11721061 (as shown in Figure S3).…”

Section: Resultsmentioning

confidence: 99%

“…SFO−SFO models are used to describe the formation of X11719474 in photolysis and the soil degradation of sulfoxaflor, with χ 2 < 15% and R 2 > 0.9. 34 After 96 h of sulfoxaflor photolysis, the concentrations of the three compounds were in the order X11719474 < X11718922 < X11721061 (as shown in Figure S3). The maximum concentrations of X11719474, X11718922, and X11721061 were 0.05, 2.0, and 7.3 mg/kg, respectively, under different photolysis conditions, which were 0.025, 12.1, and 57.7% of the initial content.…”

Section: Methodsmentioning

confidence: 99%

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Degradation of Sulfoxaflor in Water and Soil: Kinetics, Degradation Pathways, Transformation Product Identification, and Toxicity

Yang

Ran

Yuan

et al. 2022

J. Agric. Food Chem.

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Hydrolysis, photolysis, and soil degradation are important degradation pathways of pesticides and might generate toxic chemicals and pose threats to the environment. Sulfoxaflor is a widely used neonicotinoid pesticide, but few studies have been conducted to research its environmental behaviors and residues. Herein, the hydrolysis and photolysis of sulfoxaflor in water and degradation in four typical Chinese soils were systematically studied. In addition, degradation products, pathways, and toxicity to Daphnia magna were also investigated. Sulfoxaflor can undergo photolysis and soil degradation, and the degradation percentage was greater than 90% after 96 h or 96 days, respectively. However, sulfoxaflor was not degraded or only slightly degraded during in hydrolysis and was not photodegraded in acidic water or sterilized soil. Four degradation products were screened by UHPLC-Q-Orbitrap-HRMS, three candidates (X11719474, X11721061, and X11718922) were synthesized, and the photolysis and soil degradation kinetics were explored. The possible pathways were elucidated. Sulfoxaflor, X11718922, and X11721061 had a low toxicity, and X11719474 (48 h EC 50 0.74 mg/L) had a high toxicity to Daphnia magna. Thus, sulfoxaflor and its degradation products could induce tissue damage in Daphnia magna. This work offers a theoretical basis for the application and ecological risk assessment of sulfoxaflor.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Degradation of Sulfoxaflor in Water and Soil: Kinetics, Degradation Pathways, Transformation Product Identification, and Toxicity

Yang

Ran

Yuan

et al. 2022

J. Agric. Food Chem.

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“…Since we are compressing the DPPC molecule in the absence and presence of a target compound, we can compare the Helmholtz free energy 44,45 (DF) of compression for these processes. Eqn (4) shows that DF is the integral (or area under the curve) of the pÀA isotherm.…”

Section: Interaction With the Lipid Membranementioning

confidence: 99%

“…Interfacial adsorption can lead to orientational restriction, spectral shi, and thus, a change in the efficiency of photon uptake in these molecules. [4][5][6] This can result in altered photokinetic pathways. For example, a distinct photolysis rate, as compared to that of aqueous phase photochemistry, has been reported for molecules adsorbed at the surface of microplastics and in the presence of natural organic matter.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a distinct photolysis rate, as compared to that of aqueous phase photochemistry, has been reported for molecules adsorbed at the surface of microplastics and in the presence of natural organic matter. 4,[7][8][9][10][11] From the point of view of wastewater treatment, understanding the fundamentals of EC-surface interaction is also essential for developing remediation techniques for removing emerging contaminants based on adsorption technology. [12][13][14] Knowledge of the type of interactions (hydrophobic, H-bonding, etc.)…”

Section: Introductionmentioning

confidence: 99%

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