Estimation of photolysis half-lives of dyes in a continuous-flow system with the aid of quantitative structure-property relationship

Beiknejad, Davoud; Chaichi, Mohammad Javad

doi:10.1007/s11783-014-0680-y

Cited by 10 publications

(3 citation statements)

References 35 publications

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“…The photo-degradation kinetics of pesticides in natural water are related to the physical and chemical properties of water as well as the absorption and transmission of light by soluble substances in the water and the differences in the photochemical reactions [43,44]. Tap water and pond water contain a large amount of ions including NO 3 - , SO 4 2- , and Cl - , and soluble organic matter, which exhibit different behaviours in terms of photosensitization and photo-quenching of different pesticides [45,46].…”

Section: Resultsmentioning

confidence: 99%

Photo-degradation dynamics of five neonicotinoids: Bamboo vinegar as a synergistic agent for improved functional duration

et al. 2019

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The effects of photo-degradation on the utilization of pesticides in agricultural production has been investigated. Various influencing factors were compared, with results showing that the initial pesticide concentration, light source, water quality and pH possessed different effects on neonicotinoids photo-degradation. The initial concentration and pH were found to be most critical effects. The photo-degradation rate decreased by a factor of 2–4 when the initial concentration increased from 5 mg L-1 to 20 mg L-1, particularly for acetamiprid and imidacloprid. The photo-degradation pathways and products of the five neonicotinoids were also investigated, with similar pathways found for each pesticide, except for acetamiprid. Degradation pathways mainly involved photo-oxidation processes, with products identified using liquid chromatography-quadrupole time-of-flight mass spectrometry (LC-Q-TOF-MS) found to be consistent with literature reported results. Bamboo vinegar exerted a photo-quenching effect on the neonicotinoids, with an improved efficiency at higher vinegar concentrations. The photo-quenching rates of thiamethoxam and dinotefuran were 381.58% and 310.62%, respectively, when a 30-fold dilution of vinegar was employed. The photo-degradation products in bamboo vinegar were identical to those observed in methanol, with acetic acid being the main factor influencing the observed quenching effects.

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Section: Resultsmentioning

confidence: 99%

Photo-degradation dynamics of five neonicotinoids: Bamboo vinegar as a synergistic agent for improved functional duration

et al. 2019

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“…[31] Descriptors and response values are concatenated into a dataset, and statistical methods are commonly used to build predictive models of these. The relationship between log t 1/2 and four descriptors is shown as follows: Fig.…”

Section: Results and Discission Modelingmentioning

confidence: 99%

“…The first step to obtain a QSPR model was to encode the structural features of molecules, which were named molecular descriptors . Descriptors and response values are concatenated into a dataset, and statistical methods are commonly used to build predictive models of these.…”

Section: Results and Discissionmentioning

confidence: 99%

Prediction of photolysis half-lives of dihydroindolizines by genetic algorithm-multiple linear regression (GA-MLR)

Beiknejad

Chaichi

Fatemi

2016

J. Phys. Org. Chem.

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Quantitative structure-property relationship study was carried out for the prediction of photolysis half-lives of dihydroindolizines. Genetic algorithm variable selection was used in the multiple linear regression modeling. Four descriptors including topological (AAC), 2D-Autocorrelations (GATS7m), 3D-MoRSE (Mor19p), and GETAWAY (HATS3p) descriptors were selected by the algorithm, revealing that a hybrid of topologic, geometric, and electronic features of the molecule affects photolysis half-life of studied photochromic compounds. The results showed that the developed model provides statistically significant predictions of photolysis half-lives of dihydroindolizines.

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Solar Photocatalytic Treatment of Dye Removal

Khalik

2022

Sustainable Textiles: Production, Processing, Manufacturing &Amp; Chemistry

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Estimation of photolysis half-lives of dyes in a continuous-flow system with the aid of quantitative structure-property relationship

Cited by 10 publications

References 35 publications

Photo-degradation dynamics of five neonicotinoids: Bamboo vinegar as a synergistic agent for improved functional duration

Photo-degradation dynamics of five neonicotinoids: Bamboo vinegar as a synergistic agent for improved functional duration

Prediction of photolysis half-lives of dihydroindolizines by genetic algorithm-multiple linear regression (GA-MLR)

Solar Photocatalytic Treatment of Dye Removal

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