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UV-C photolysis of endocrine disruptors. The influence of inorganic peroxides.

PubMed
Authors: Rivas J, Gimeno O, Borralho T, Carbajo M

Year

2010

Paper ID

12444

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

103

Citations

32

Abstract

Norfloxacin, doxycycline and mefenamic acid have been photolysed with UV-C radiation (254 nm) in the presence and absence of inorganic peroxides (hydrogen peroxide or sodium monopersulfate). Quantum yields in the range (1.1-4.5)x10(-3) mol Einstein(-1) indicate the low photo-reactivity of these pharmaceuticals. Inorganic peroxides considerably enhanced the contaminants conversion, although no appreciable mineralization could be obtained. A simplistic reaction mechanism for the hydrogen peroxide promoted experiments allowed for a rough estimation of the rate constant between hydroxyl radicals and norfloxacin (k>1 x 10(9)M(-1)s(-1)), doxycycline (k>1.5 x 10(9)M(-1)s(-1)) and mefenamic acid (k>11.0 x 10(9)M(-1)s(-1)).

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  • Norfloxacin, doxycycline and mefenamic acid have been photolysed with UV-C radiation (254 nm) in the presence and absence of inorganic peroxides (hydrogen peroxide or sodium...

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References & Citation Signals

[1] DOI https://doi.org/10.1016/j.jhazmat.2009.09.065 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/19836887/

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