Effects of inorganic anions on the photolysis of triclosan under UV irradiation | Zendy

Lei Chen | Zendy; Zhipeng Wang | Zendy; Qian Cheng | Zendy; Yuchen He | Zendy

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Effects of inorganic anions on the photolysis of triclosan under UV irradiation

Author(s) -

Lei Chen,

Zhipeng Wang,

Qian Cheng,

Yuchen He

Publication year - 2018

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2018.421

Subject(s) - triclosan , photodegradation , chemistry , photodissociation , aqueous solution , photochemistry , environmental chemistry , photocatalysis , catalysis , organic chemistry , medicine , pathology

Triclosan is a widely used antimicrobial agent and may pose health risks to many aquatic organisms. Photodegradation is an important transformation pathway for triclosan, but studies on the effects of inorganic anions on photodegradation of triclosan are limited. In the present study, the single and combined effects of NO 3 - , Cl - and HCO 3 - on the photolysis of triclosan in aqueous solutions under UV irradiation was evaluated. The results showed that photodegradation of triclosan was inhibited by NO 3 - and promoted by HCO 3 - , while no significant effect was observed with Cl - . When Cl - was added to NO 3 - , no effect was observed, but the addition of Cl - hindered the promotion effect of HCO 3 - . The coexistence of NO 3 - , Cl - and HCO 3 - inhibited the photolysis of triclosan. These results showed the complex effects of inorganic anions in the photolysis of triclosan and provide useful information for an accurate ecological risk assessment of triclosan in natural waters. It will also help to develop appropriate treatment ways of triclosan.

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