A pilot lab trial for enhanced oxidative transformation of procymidone fungicide and its aniline metabolite using heterogeneous MnO2 catalysts

Sarker, Aniruddha; Islam, Tofazzal; Kim, Jang-Eok

doi:10.1007/s11356-022-22520-z

Cited by 2 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photodegradation is the main transformation pathway of profenofos [12], particularly on the surface of water, where solar irradiation is abundant during the daytime [13]. Photodegradation reactions may include isomerization, oxidation, or substitution [14,15]. Profenofos can undergo direct photodegradation upon photon absorption or react with reactive oxygen species (ROS), such as singlet oxygen ( 1 O 2 ) and hydroxyl radical (•OH) in the environment.…”

Section: Introductionmentioning

confidence: 99%

Myricetin Inhibits Photodegradation of Profenofos in Water: Pathways and Mechanisms

Zhang,

Yang,

Wang

et al. 2024

Agronomy

View full text Add to dashboard Cite

Profenofos is a detectable insecticide in the environment with strong toxicity to non-targeted organisms. Photodegradation is a main transformation of profenofos in the environment. Myricetin is a flavonoid that strongly scavenges free radicals. The effect of myricetin on the photodegradation of profenofos was studied. The half-lives (T1/2) of profenofos were 1.7–7.0 and 90 h under artificial light and sunlight. The photolysis rate of profenofos decreased by 1.87–4.72 and 7.62 times with the addition of 20 ratios of myricetin. Free radicals reacting with profenofos were •OH and 1O2, and the key free radical was •OH. Myricetin strongly scavenged •OH and 1O2 which rapidly reacted with profenofos. O-(2-Chlorophenyl)-O-ethyl-S-propyl phosphorothioate (M3) and O-(2-chlorophenyl)-O-ethyl phosphorothioate (M4) were major and new photoproducts of profenofos. According to the Ecological Structure Activity Relationships, photodegradation of profenofos was a detoxification process, but myricetin inhibited the photodegradation of profenofos and its photoproducts. These results highlight the implication of myricetin on the fate and potential risk of profenofos in the environment.

show abstract