This article is cited in 8 papers

Communications

Efficiency of singlet oxygen generation by fulvic acids and its influence on UV photodegradation of herbicide Amitrole in aqueous solutions

I. P. Pozdnyakov^ab, V. A. Salomatova^a, M. V. Parkhats^c, B. M. Dzhagarov^c, N. M. Bazhin<sup>a

a</sup> V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
^b Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation
^c B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus

Abstract: pH-dependent efficiency of singlet oxygen (¹O₂) generation by fulvic acids (FAs) from different sources was estimated by time-resolved luminescence technique. All FAs turn up the highest quantum yields of ¹O₂ for neutral and alkali solutions [ϕ⁵³²(¹O₂)] = (0.3•2.5)í10^•2] and 3•5-fold decrease in ϕ⁵³²(¹O₂) for acidic solutions. Potential of FA ChangSheng (the best ¹O₂ generating agent among investigated FAs) in relation to photodegradation of non-UVA-absorbing herbicide Amitrole (3-amino-1,2,4-triazole) was demonstrated.

Language: English

DOI: 10.1016/j.mencom.2017.07.028

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