Photodegradation and Hydrolysis of Chlorpyrifos in Aqueous Systems

Ukpebor, J. E.; Ikpeni, S; Ejiogu, N. C.; Ukpebor, E. E.

doi:10.4314/njt.v33i4.16

Cited by 6 publications

(1 citation statement)

References 24 publications

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“… 193 The desorption of acetone herbicides indicates that the retention on fly ash is mainly due to weak physical interactions such as London dispersion forces. 194 pointed out that the rapid alkaline degradation of the non-ionising insecticide chlorpyrifos could find application in water/wastewater treatment, as its half-life decreases from 150 hours to 27 hours when the pH increases from 7 to 11. Most pesticide molecules are stable in aqueous suspensions within the pH range of 4 to 9, but become unstable under alkaline conditions due to rapid hydrolysis.…”

Section: Bio-based Resources (Bbr) and Implications To Pesticides Tra...mentioning

confidence: 99%

Bio-based resources: systemic & circular solutions for (agro)environmental services

Ondrasek,

Meriño-Gergichevich,

Manterola-Barroso

et al. 2024

RSC Adv.

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Section: Bio-based Resources (Bbr) and Implications To Pesticides Tra...mentioning

confidence: 99%

Bio-based resources: systemic & circular solutions for (agro)environmental services

Ondrasek,

Meriño-Gergichevich,

Manterola-Barroso

et al. 2024

RSC Adv.

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Photolysis of chlorpyrifos‐methyl, chlorpyrifos‐methyl oxon, and 3,5,6‐trichloro‐2‐pyridinol

Lobatto

Argüello

Buján

2019

J of Physical Organic Chem

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The photodegradation of chlorpyrifos‐methyl (1), and two of its photodegradation products, chlorpyrifos‐methyl oxon (2), and 3,5,6‐trichloro‐2‐pyridinol (3) was studied using low pressure Hg lamps irradiating at 254 nm either in pure acetonitrile (ACN) or in 10% ACN/H2O. Experiments conducted in pure ACN allowed us to identify the photoproducts in the photolysis of 1, 2, and 3 both, in air saturated samples and in the absence of oxygen as analyzed by gas chromatography–mass spectrometry (GC‐MS), high resolution mass spectrometry (HRMS), and phosphorus‐31 nuclear magnetic resonance (31P NMR).Since 2 and 3 are products in the photodegradation of 1, their degradations in 10% ACN/H2O were independently measured, and it was determined that 1 and 2 degrade at comparable rates. Instead, 3 does not interfere in the measurement since it degrades much faster, and their products do not absorb in the region of 1.Our results indicate that short wave photolysis could become a plausible detoxification mechanism.

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Bioashes and their potential for reuse to sustain ecosystem services and underpin circular economy

Ondrašek

Kovačić

Carević

et al. 2021

Renewable and Sustainable Energy Reviews

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Photodegradation and Hydrolysis of Chlorpyrifos in Aqueous Systems

Abstract: ABSTRACT ABSTRACTHydrolysis and photodegradation of chlorpyrifos a widely used organophosphorus pesticide was studied.

Cited by 6 publications

References 24 publications

Bio-based resources: systemic & circular solutions for (agro)environmental services

Bio-based resources: systemic & circular solutions for (agro)environmental services

Photolysis of chlorpyrifos‐methyl, chlorpyrifos‐methyl oxon, and 3,5,6‐trichloro‐2‐pyridinol

Bioashes and their potential for reuse to sustain ecosystem services and underpin circular economy

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