Effect of humic acids, nitrate and oxygen on the photodegradation of the flubendiamide insecticide: identification of products

作者: M. Bavcon Kralj , H. Divanović , S. Košenina , M. Kete , A. T. Lebedev

DOI: 10.1007/S10311-017-0691-6

关键词: Phthalic acidDegradation (geology)NitrateAmideNuclear chemistryOxygenPhthalimideGas chromatographyChemistryPhotodegradation

摘要: Flubendiamide is a ryanodine insecticide that shows strong insecticidal activity and relatively safe for non-target organisms. Actually only flubendiamide its product desiodo-flubendiamide have been studied during catalytic degradation using TiO2 ZnO. Therefore, here we tested the photocatalytic removal of in presence nitrates or humic acids. Degradation kinetics were monitored high-performance liquid chromatography ultraviolet–visible detector. Product identification was done high-resolution time-of-flight mass spectrometer coupled to gas chromatograph (GC-HRMS). Results show addition acids at 10 mg l−1 increased more than five times. The nitrate ions had no influence. ten times faster experiments with oxygen purging. Fourteen products identified, which can be classified into three groups: phthalimide related phthalic acid derivatives, fluorinated species second amide moiety, advanced transformation products.

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