Direct measurements of the reactivity of singlet oxygen to some persistent herbicides in aqueous solutions

Ivan P. Pozdnyakov, Marina V. Parkhats

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Reactivity of the singlet oxygen (SO), which is assumed to be one of the important oxidizers in natural waters, towards to a set of persistent herbicides, was measured for the first time using time resolved luminescence technique. It was observed that rate constants of SO reactions with the majority of studied herbicides are less than 106 M−1s−1 allowing to conclude about negligible participation of SO in oxidation of the compounds in natural waters.

Original languageEnglish
Article number125872
Number of pages3
JournalChemosphere
Volume247
DOIs
Publication statusPublished - May 2020

Keywords

  • Fulvic and humic acids
  • Photodegradation
  • Reactive oxygen species
  • Singlet oxygen
  • Sodium azide
  • Time resolved luminescence
  • MECHANISM
  • STATE
  • ATRAZINE
  • PESTICIDES
  • DEGRADATION
  • DISSOLVED ORGANIC-MATTER
  • PHOTOLYSIS
  • MOLECULAR-OXYGEN

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