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The research aims to investigate how different pH levels affect the degradation dynamics of deltamethrin insecticide in water.

Effect of pH on the degradation dynamics of deltamethrin insecticide in water

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Randomized trial examines degradation of deltamethrin in water at varying pH levels, suggesting implications for aquatic stability.

The research aims to investigate how different pH levels affect the degradation dynamics of deltamethrin insecticide in water.
Studied deltamethrin 25% wettable dispersible granules (WDG) in laboratory-controlled conditions.
Applied gas chromatography-mass spectrometry (GC-MS) for residue analysis and validated the method.
Analyzed degradation under various pH levels, specifically pH 4.0, pH 7.0, and pH 9.2.
Deltamethrin degradation followed first-order kinetics with half-life values ranging from 0.62 to 0.84 days based on pH conditions.
Degradation was slower at pH 4.0 compared to pH 7.0 and pH 9.2, indicating greater residue persistence.
Notable persistence of deltamethrin residues was observed up to the fifth day at acidic pH, suggesting stability in aquatic environments.

Mishra et al. (2026) studied this question.

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