Photodecomposition of iodinated contrast media and subsequent formation of toxic iodinated moieties during final disinfection with chlorinated oxidants

Abstract

, Photodecomposition of iodinated contrast media and subsequent formation of toxic iodinated moieties during final disinfection with chlorinated oxidants, Water Research (2016Research ( ), doi: 10.1016Research ( /j.watres.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Keywords: iodinated disinfection by-products (I-DBPs), UV, toxicity, iodinated X-ray contrast 48 media, natural organic matter, quantum yield.

Kinetics of Oxidation of Iodide (I–) and Hypoiodous Acid (HOI) by Peroxymonosulfate (PMS) and Formation of Iodinated Products in the PMS/I–/NOM System

“…This finding probably resulted from the competitive reaction of HOCl at high concentrations versus HOI at low concentrations toward reactive sites in NOM, although HOCl might be less reactive toward NOM than HOI is. , The oxidant demands in the case of HOCl were much greater than those obtained in the case of PMS for each NOM representative (Figure S7). Allard and co-workers also reported a similar competition effect of HOCl for reactive sites of NOM, which decreased the level of TOI formed from chlorination of UV-irradiated iopamidol in the presence of NOM. It seemed likely that this competition effect of HOCl was weakened at pH 9 because of its deprotonation into OCl – (p K a = 7.54).…”

Control of optical transparency and infrared laser heating of costal cartilage via injection of iohexol

“…Iodinated contrast media are photo‐sensitive molecules decomposing under certain conditions to iodine and byproducts. Therefore, iohexol stability under IR laser radiation was investigated.…”

Nano-sized Zero-Valent Iron Coupled with Sulfidation and Ferrous Implantation Enhances the Reduction–Oxidation Removal of Iodinated Contrast Medium

“…This acceptable cost is the same order of magnitude compared with that reported by Fan et al 27 However, the removal efficiency of DTA through S-nZVI/ Fe 2+ was lower or comparable as comparison to some reductive or oxidative treatment technologies, such as UV photolysis, advanced oxidation process and electrochemical reduction and oxidation treatment. 30,49,50 Therefore, the operational parameters including the dosage of iron and sulfur may need be optimized to remarkably improve the removal efficiency of this S-nZVI/Fe 2+ treatment, which deserves a further investigation in future.…”