Investigations of diatrizoate degradation by photo-activated persulfate

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• 作者：Lei Zhou^a ; ^{lei.zhou@ircelyon.univ-lyon1.fr} ; Corinne Ferronato^a ; Jean-Marc Chovelon^a ; ^{jean-marc.chovelon@ircelyon.univ-lyon1.fr} ; Mohamad Sleiman^b ; ^c ; Claire Richard^c ; ^d ; ^{claire.richard@univ-bpclermont.fr}
• 关键词：X-ray contrast media ; Sunlight activated persulfate ; Sulfate radicals ; Deiodination ; Light-absorbing intermediates
• 刊名：Chemical Engineering Journal
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：311
• 期：Complete
• 页码：28-36
• 全文大小：1072 K
• 卷排序：311

文摘

Efficient oxidation of diatrizoate could be achieved by photo-activated persulfate. UV/PS was found to be more efficient than UV/H2O2 for DTZ removal under irradiation. Rate constant of DTZ with SO4·- was determined by laser flash photolysis. Pathways included deiodination/decarboxylation-hydroxylation and side chain cleavage. Light-absorbing photoproducts contain hydroquinone and benzoquinone moieties.