Degradation of cypermethrin, malathion and dichlorovos in water and on tea leaves with O3/UV/TiO2 treatment

Lin, Li; Xie, Minnan; Liang, Yongmei; He, Yingqian; Chan, Yuk Sing Gilbert; Luan, Tiangang

doi:10.1016/j.foodcont.2012.05.009

Cited by 41 publications

(25 citation statements)

References 26 publications

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“…It can be deduced that more of cypermethrin is expected to be leached at lower pH than at neutral pH of the rainwater. This conforms to the observation on degradation of cypermethrin, malathion and dichlorovos in water and in tea leaves (Lin et al, 2012). In the study, more proportion of cypermethrin was leached from tea leaves when distilled water of pH 3.5 was used than when pH 6.8 was used for elution.…”

Section: Effects Of Ph On the Mobility Of Cypermethrin In Soilsupporting

confidence: 91%

Sorption of Cypermethrin from Alfisol and Inceptisol using acidified simulated rainwater in a soil column set-up

Ipeaiyeda¹,

Fasiku²

2017

Afr. J. Pure Appl. Chem.

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Cypermethrin is a synthetic, pyrethroid insecticide and used for agricultural practices. The leaching of this pesticide through soil is of great concern because of the possibility of contaminating ground and surface water. The mobility of pesticide in soil being the main environmental reservoir varies among soil orders and the concept is still under investigation. Hence, this study was aimed at investigating the sorption capability of Alfisol and Inceptisol at different soil depth when leached with simulated rainwater of different pH values. The leachates were determined for cypermethrin concentration using a new UV/Visible spectrometry method. The CEC, organic matter content of Alfisol were 4.05±0.03 cmol/kg and 1.74±0.02%, while the corresponding characteristics of Inceptisol were 4.45±0.05 cmol/kg and 1.03±0.01%, respectively. pH of Alfisol and Inceptisol soil orders were 5.92 and 6.25, respectively. Simulated rainwater (pH 4) of 50, 100 and 150 mL leached out 37.0±0.1, 43.1±0.1 and 59.4±0.2% of cypermethrin, respectively from Alfisol at soil depth of 10 cm. At pH 6.8, the corresponding volumes of simulated rainwater leached out 31.8±0.1, 35.4±0.1 and 37.4±0.1% of cypermethrin, respectively. For each soil order, these proportions of sorbed cypermethrin decreased progressively as soil depth increased from 10-30 cm. The proportions of cypermethrin sorbed by Inceptisol were more than the corresponding proportions sorbed by Afisol. Afisol has high clay and organic contents, which might be responsible for its surpassing potential to sorb cypermethrin compared to Inceptisol.

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Section: Effects Of Ph On the Mobility Of Cypermethrin In Soilsupporting

confidence: 91%

Sorption of Cypermethrin from Alfisol and Inceptisol using acidified simulated rainwater in a soil column set-up

Ipeaiyeda¹,

Fasiku²

2017

Afr. J. Pure Appl. Chem.

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“…The combined treatment resulted in 80% and 78% removal of cypermethrin and malathion, respectively (Lin et al, 2012). Removal of cypermethrin and malathion from tea leaves by ozone/UV/TiO 2 were significantly greater than that achieved by water.…”

Section: Synergistic Effects Of Ozonementioning

confidence: 88%

Opportunities and Challenges in the Application of Ozone in Food Processing

Priyanka

Rastogi

Tiwari

2014

Emerging Technologies for Food Processing

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“…Despite several reports over last three decades regarding the efficiency of combined AOPs in aqueous systems, the use of such technologies has not been explored for removal of pesticide residues on fruits and vegetables or other foods for that matter of fact. In a recent study, Lin, et al (2012) observed fast dissipation of cypermethrin, malathion, and dichlorovos from tea leaves subjected to photocatalytic ozonation (i.e. O 3 /UV/TiO 2 ) process.…”

Section: Figurementioning

confidence: 99%

“…This is because the ion concentrations regulate the shift in equilibrium. For example, alkaline conditions are suitable for degrading malathion and dichlorvos with ozone, whereas acidic conditions are suitable for cypermethrin (Lin, et al, 2012).…”

Section: Matrix Phmentioning

confidence: 99%

“…Despite the anomalies between results, UV light can be easily coupled with ultrasound, ozone, catalysts (e.g. TiO 2 ) or hydrogen peroxide to obtain synergistic effects and has been widely explored for water treatment (Abramovic, Banic, & Sojic, 2010;Tizaoui, Mezughi, & Bickley, 2011) and only recently for dissipation of pesticides on tea leaves (Lin, et al, 2012).…”

Section: Uv Lightmentioning

confidence: 99%

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The contribution of non-thermal and advanced oxidation technologies towards dissipation of pesticide residues

Misra¹

2015

Trends in Food Science & Technology

118

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Degradation of cypermethrin, malathion and dichlorovos in water and on tea leaves with O3/UV/TiO2 treatment

Cited by 41 publications

References 26 publications

Sorption of Cypermethrin from Alfisol and Inceptisol using acidified simulated rainwater in a soil column set-up

Sorption of Cypermethrin from Alfisol and Inceptisol using acidified simulated rainwater in a soil column set-up

Opportunities and Challenges in the Application of Ozone in Food Processing

The contribution of non-thermal and advanced oxidation technologies towards dissipation of pesticide residues

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