Degradation of pesticide Cartap in Padan 95SP by combined advanced oxidation and electro-Fenton process

Hoang, Nguyen Tien; Holze, Rudolf

doi:10.1007/s10008-020-04581-7

Cited by 22 publications

(5 citation statements)

References 65 publications

(90 reference statements)

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“…Cartap is a polar and water-soluble compound that is stable under low pH conditions 14 . It decomposes to nereistoxin through a dihydro-nereistoxin intermediate by hydrolysis and oxidation under neutral or alkaline conditions 6 , 11 , 28 (Fig. 2 ).…”

Section: Resultsmentioning

confidence: 99%

Simultaneous determination of nereistoxin insecticides in foods of animal origins by combining pH-dependent reversible partitioning with hydrophilic interaction chromatography-mass spectrometry

Yang

Choi

2022

Sci Rep

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Although nereistoxin insecticides (NIs) are banned for animal husbandry operations, they are still used because of their high insecticidal activities. Therefore, a reliable residue analysis method for the simultaneous detection of cartap, bensultap, thiocyclam, and nereistoxin in foods of animal origins, including beef, pork, chicken, milk, and eggs, was developed using hydrophilic interaction liquid chromatography–mass spectrometry (HILIC–LC–MS/MS). The NIs were extracted with an acidic cysteine and formate buffer solution and hydrolyzed to nereistoxin. The molarity and pH of the buffer were optimized at 20 mM and 3, respectively, to keep the pH of the extracts at 4–5. pH-dependent acid–base partitioning coupled with salting-out-assisted liquid–liquid extraction using acetonitrile was performed for purification and for the direct introduction of the extracts to LC. The optimal pH values were 5 and 9 for the acid–base partitioning. Nereistoxin quantitation was achieved with consistent column retention (RSD < 0.6%) and a high degree of separation (N > 106). The matrix-dependent method limit of quantitation was 2 μg nereistoxin/kg, and the calibration curve showed good linearity (R2 > 0.998). The recovery efficiencies were in the range of 89.2–109.9% with relative standard deviations less than 10%, and matrix effects did not exceed ± 10%, which satisfied the criteria outlined in the European SANTE/12682/2019 guidelines.

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Section: Resultsmentioning

confidence: 99%

Simultaneous determination of nereistoxin insecticides in foods of animal origins by combining pH-dependent reversible partitioning with hydrophilic interaction chromatography-mass spectrometry

Yang

Choi

2022

Sci Rep

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“…It is well-known that the degradation efficiency of organics was highly dependent on the type of electrolytes [7], because it was related to the generated reactive species, which contributed to the degradation of organics. Among them, Cland SO4 2are considered to be the common and effective supporting electrolytes [10], [12]. Therefore, they were selected in this study for comparison.…”

Section: Stability Of Clo and Cvs Test For Direct Oxidation Of Clo In...mentioning

confidence: 99%

Degradation of chlothianidin from Dantutso 50WG in electrochemical process: Kinetics and role of reactive species

Tien

2022

UD-JST

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The kinetic degradation of clothianidin (CLO) (in Dantuso 50 WG) during electrochemical oxidation (EO) process using sulfate- and chloride-supporting electrolytes was comprehensively investigated. The degradation of CLO was not due to direct electron oxidation, but was mainly due to •OH and other radicals generated from supporting electrolytes. The degradation of CLO was significantly inhibited when increasing the concentration of nitrobenzene (NB), methanol (MeOH) and benzoic acid (BA). The second-order rate constant of •OH toward CLO was determined to be 3.23×109 M-1 s-1 using competition kinetics method. When SO42- and Cl- were used as supporting electrolytes, the degradation of CLO by •OH was the same with kCLO = 0.0084 min-1. Meanwhile, the higher removal of CLO in SO42--supporting electrolyte was due to the contribution of (SO4•-/S2O82-) more than that of (Cl•/HClO/ClO-).

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“…e Fenton process and electrochemical are combined with the increasing degradability of organic compounds present in high-intensity wastes. Even several researchers have applied EF to eliminate pollutants from wastewater of dyeing and textile [20,21], pharmaceuticals [14], coke [22], pesticides [23][24][25], or mixed industrial wastewater [26]. Very few studies focus on the mineralization and biodegradability of tricyclazole and pollutants from real pesticide production by EF process [27].…”

Section: Introductionmentioning

confidence: 99%

Removal of Tricyclazole and Total Organic Carbon in Real Pesticide Wastewater by Electro-Fenton

Bùi

Huynh

2022

Journal of Chemistry

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In this study, electro-Fenton (EF) was employed for the removal of tricyclazole (TC) and total organic carbon (TOC) in real pesticide wastewater (RPW). The central composite design (CCD) with three parameters, that is, current density, Fe2+ concentration, and electrolysis time, has been conducted to predict the TOC and TC removal efficiency. The high correlation of the quadratic models of 0.9842 and 0.9781 for TC and TOC removal, respectively, indicates the significance of the models. The obtained results revealed that the high-efficiency removal of both TC and TOC in RPW. Approximately 99.6% of TC was decomposed under the optimum conditions of a current density of 2.2 mA/cm2 and an Fe2+ concentration of 0.2 mM during 188 min with an operating cost of 121.392 $/kg TC or ∼2.692 $/m3, while 84.2% TOC was eliminated at a current density of 2.2 mA/cm2 and an Fe2+ concentration of 0.2 mM during 217 min with an operating cost of 3.019 $/kg TOC or 3.916 $/m3. Acute toxicity tests at optimal condition revealed moderate exhibition toxicity of treated wastewater against Daphnia magna with LC50 values of 3.12%, 2.05%, 1.84%, and 1.36% at 24 h, 48 h, 72 h, and 96 h, respectively. The removal of TC and TOC followed pseudo-first-order kinetic with an R2 of ∼0.993 and 0.923, respectively.

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Degradation of pesticide Cartap in Padan 95SP by combined advanced oxidation and electro-Fenton process

Cited by 22 publications

References 65 publications

Simultaneous determination of nereistoxin insecticides in foods of animal origins by combining pH-dependent reversible partitioning with hydrophilic interaction chromatography-mass spectrometry

Simultaneous determination of nereistoxin insecticides in foods of animal origins by combining pH-dependent reversible partitioning with hydrophilic interaction chromatography-mass spectrometry

Degradation of chlothianidin from Dantutso 50WG in electrochemical process: Kinetics and role of reactive species

Removal of Tricyclazole and Total Organic Carbon in Real Pesticide Wastewater by Electro-Fenton

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