Photolysis of pesticidal synergists. I. piperonyl butoxide

Fishbein, Lawrence; Gaibel, Z. L. F.

doi:10.1007/bf01539985

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Mechanisms Of Micropollutant Removal In Wsps and The Oxidati...1

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Cited by 9 publications

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“…67 Additionally piperonyl butoxide has been found to be degraded by sunlight, although rates of degradation were low. 68 The other chemicals with higher removal in WSPs have not yet been studied for photodegradation in wastewater systems. However, both galaxolide and tonalide can be removed by UV irradiation.…”

Section: Mechanisms Of Micropollutant Removal In Wsps and The Oxidati...mentioning

confidence: 99%

Chemical removal in waste stabilisation pond systems of varying configuration

Linge

Liew

Gruchlik

et al. 2021

Environ. Sci.: Water Res. Technol.

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Section: Mechanisms Of Micropollutant Removal In Wsps and The Oxidati...mentioning

confidence: 99%

Chemical removal in waste stabilisation pond systems of varying configuration

Linge

Liew

Gruchlik

et al. 2021

Environ. Sci.: Water Res. Technol.

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The photochemical behaviour of five household pyrethroid insecticides and a synergist as studied by photo-solid-phase microextraction

et al. 2007

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In the present study, solid-phase microextraction in photochemical studies was used to investigate UV light induced photodegradation of five pyrethroids (empenthrin, transfluthrin, allethrin, phenothrin and cyphenothrin) and a synergist (piperonyl butoxide), which are common ingredients of household insecticides. Gas chromatography coupled with mass spectrometry was used to separate and tentatively identify the parent compounds and their corresponding photoproducts generated in the same polydimethylsiloxane fibre. Kinetics curves were obtained and apparent first-order rate constants and half-lives were estimated. Twenty-six photoproducts were tentatively identified and photodegradation pathways for the compounds investigated were proposed. It is a matter of some concern that three of the photoproducts identified [(3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid, 3-phenoxybenzaldehyde and (3-phenoxyphenyl)methanol] have been reported to be endocrine disruptors. There is no record of previous studies of cyphenothrin and empenthrin photodegradation, and therefore the present study represents the first attempt to elucidate the photochemical behaviour of these compounds. Figure Photo-SPME for Pyrethroids.

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