Electrochemical Oxidation of Ethinylestradiol on a Commercial Ti/Ru0.3 Ti0.7O2 DSA Electrode | Zendy

Karla Moreira Vieira | Zendy; Clésia C. Nascentes | Zendy; Artur de Jesus Motheo | Zendy; Rodinei Augusti | Zendy

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Electrochemical Oxidation of Ethinylestradiol on a Commercial Ti/Ru_0.3 Ti_0.7O₂ DSA Electrode

Author(s) -

Karla Moreira Vieira,

Clésia C. Nascentes,

Artur de Jesus Motheo,

Rodinei Augusti

Publication year - 2013

Publication title -

isrn environmental chemistry

Language(s) - English

Resource type - Journals

ISSN - 2314-6419

DOI - 10.1155/2013/354848

Subject(s) - ethinylestradiol , electrochemistry , aqueous solution , electrode , electrolyte , degradation (telecommunications) , chemistry , nuclear chemistry , mineralization (soil science) , supporting electrolyte , inorganic chemistry , organic chemistry , telecommunications , population , computer science , nitrogen , research methodology , demography , sociology

The electrochemical oxidation of the hormone ethinylestradiol in an aqueous-methanolic medium by the application of a constant current of 40 mA cm−2 in a flow cell with a commercial Ti/Ru0.3 Ti0.7O2 electrode was evaluated. The effect caused by the use of NaCl as a support electrolyte was also investigated. Hence, HPLC-UV analyses revealed that ethinylestradiol was almost totally consumed after a 60 min reaction time in the presence of NaCl. Conversely, much lower degradation rates were obtained when NaCl was not employed. Moreover, direct infusion ESI-MS and GC-MS analysis revealed that apparently no degradation products had been formed under these conditions. Hence, this study clearly demonstrated that such electrochemical treatment can be efficiently used to promote the complete degradation (and probably mineralization) of the hormone ethinylestradiol.

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