Influence of chemical speciation on photochemical transformation of three fluoroquinolones (FQs) in water: Kinetics, mechanism, and toxicity of photolysis products.

Anti-Bacterial Agents Fluoroquinolones Kinetics Photolysis Water Water Pollutants, Chemical
Chemical speciation Degradation pathway Direct photolysis Fluoroquinolone Indirect photolysis Self-sensitized photolysis

Journal

Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072

Informations de publication

Date de publication:
01 01 2019
Historique:
received: 02 04 2018
revised: 05 10 2018
accepted: 06 10 2018
pubmed: 22 10 2018
medline: 26 9 2019
entrez: 22 10 2018
Statut: ppublish

Résumé

This study investigated the contribution of direct, indirect, and self-sensitized photolysis to the photochemical fate of three model fluoroquinolones (FQs), i.e., lomefloxacin (LOM), norfloxacin (NOR), and ofloxacin (OFL), and demonstrated the influence of chemical speciation on their photodegradation behavior, a topic that has received relatively little attention. Results suggest that these FQs in water transformed mainly via direct photolysis, while hydroxyl radical played a key role in their indirect and self-sensitized photolysis. Chemical speciation of such zwitterionic compounds significantly affected the kinetics of their phototransformation, with the quantum yields of photodegradation decreased in the order of zwitterionic (FQsH) > anionic (FQs

Identifiants

DOI: 10.1016/j.watres.2018.10.027 PMID: 30343195
pubmed: 30343195
pii: S0043-1354(18)30824-8
doi: 10.1016/j.watres.2018.10.027
pii:
doi:

Substances chimiques

Anti-Bacterial Agents 0
Fluoroquinolones 0
Water Pollutants, Chemical 0
Water 059QF0KO0R

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

19-29

Informations de copyright

Copyright © 2018 Elsevier Ltd. All rights reserved.

Auteurs

Zhichao Zhang (Z)

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.

Xiande Xie (X)

MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.

Zhiqiang Yu (Z)

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.

Hefa Cheng (H)

MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China. Electronic address: hefac@umich.edu.

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Classifications MeSH

questionsmedicales.fr › Actions chimiques et utilisations › Actions pharmacologiques › Utilisations thérapeutiques › Anti-infectieux › Antibactériens › Influence of chemical speciation on...
questionsmedicales.fr › Composés hétérocycliques › Composés hétérocycliques à cycles fusionnés › Composés hétérobicycliques › Quinoléines › Quinolinone › Fluoroquinolones › Influence of chemical speciation on...
questionsmedicales.fr › Phénomènes chimiques › Phénomènes biochimiques › Cinétique › Influence of chemical speciation on...
questionsmedicales.fr › Phénomènes chimiques › Processus photochimiques › Photolyse › Influence of chemical speciation on...
questionsmedicales.fr › Produits chimiques inorganiques › Composés de l'oxygène › Oxydes › Eau › Influence of chemical speciation on...
questionsmedicales.fr › Actions chimiques et utilisations › Actions toxiques › Polluants environnementaux › Polluants de l'eau › Polluants chimiques de l'eau › Influence of chemical speciation on...