Electro-reductive deiodination of iohexol catalyzed by vitamin B12 and biodegradability investigation

Zhang, Wei; Soutrel, Isabelle; Amrane, Abdeltif; Fourcade, Florence; Geneste, Florence

doi:10.1016/j.jelechem.2021.115559

Cited by 7 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, the electrochemical reduction of iohexol is a well-recognized reaction that can proceed easily. It has been concluded that electron transfers from electron donors to iohexol molecules lead to the generation of I – iodide ions. , In this work, iohexol molecules are reduced via the transfer of photoelectrons released from metal surfaces of sample plates upon 355 nm laser irradiation. Figure S7A,B presents the charge distributions and bond lengths of a neutral iohexol molecule as well as an iohexol radical anion that has acquired an electron, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…It has been concluded that electron transfers from electron donors to iohexol molecules lead to the generation of I − iodide ions. 73,74 In this work, iohexol molecules are reduced via the transfer of photoelectrons released from metal surfaces of sample plates upon 355 nm laser irradiation. The reason why aluminum−iodide clusters were not observed with mass spectrometers remains unknown.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A Soft Evaporation and Ionization Technique for Mass Spectrometric Analysis and Bio-Imaging of Metal Ions in Plants Based on Metal–Iodide Cluster Ionization

Yang

Jia

et al. 2021

Anal. Chem.

View full text Add to dashboard Cite

Protonation/deprotonation is the well-recognized mass spectrometric mechanism in matrix-assisted laser desorption ionization of organic molecules but not for metal ions with different oxidation states. We describe herein a soft evaporation and ionization technique for metal ions based on iodination/de-iodination in metal–iodide cluster ionization (MICI). It is not only able to determine identities and oxidation states of metal ions but also reveal spatial distributions and isotope ratios in response to physiological or environmental changes. A long chain alcohol 1-tetradecanol with no functional groups that can absorb laser irradiation was used to cover and prevent samples from direct laser ablation. Upon the irradiation of the third harmonic Nd3+:YAG (355 nm, 3 ns), iohexol containing three covalently bonded iodine atoms instantly generates negative iodide ions that can quantitatively form clusters with at least 14 essential metal ions present in plants. The detection limits vary with different metal ions down to low fmol. MICI eliminates the atomization process that obscures metal charges in inductively coupled plasma mass spectrometry. Because only metal ions can be iodinated with iohexol, interferences from the abundant organic molecules of plants that are confronted by secondary ion mass spectrometry (SIMS) are also greatly decreased.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

A Soft Evaporation and Ionization Technique for Mass Spectrometric Analysis and Bio-Imaging of Metal Ions in Plants Based on Metal–Iodide Cluster Ionization

Yang

Jia

et al. 2021

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…Whereas the control tests without corrinoid showed a low degradation of ICM, complete deiodination was achieved in the presence of vitamin B 12 and dicyanocobinamide. Iohexol has been also totally deiodinated by electrochemical reduction on graphite felt, improved when Vitamin B12 was used as a redox catalyst [140]. All these processes can achieve a total removal efficiency under optimal operating conditions and three deiodinated by-products (one, two, and three cut iodine-carbon bonds) were detected.…”

Section: Electroreductive Deiodinationmentioning

confidence: 99%

Removal of Iodine-Containing X-ray Contrast Media from Environment: The Challenge of a Total Mineralization

et al. 2023

Self Cite

View full text Add to dashboard Cite

Iodinated X-ray contrast media (ICM) as emerging micropollutants have attracted considerable attention in recent years due to their high detected concentration in water systems. It results in environmental issues partly due to the formation of toxic by-products during the disinfection process in water treatment. Consequently, various approaches have been investigated by researchers in order to achieve ICM total mineralization. This review discusses the different methods that have been used to degrade them, with special attention to the mineralization yield and to the nature of formed by-products. The problem of pollution by ICM is discussed in the first part dedicated to the presence of ICM in the environment and its consequences. In the second part, the processes for ICM treatment including biological treatment, advanced oxidation/reductive processes, and coupled processes are reviewed in detail. The main results and mechanisms involved in each approach are described, and by-products identified during the different treatments are listed. Moreover, based on their efficiency and their cost-effectiveness, the prospects and process developments of ICM treatment are discussed.

show abstract

“…Reductive deiodination of diatrizoate has been also investigated since it allows an improvement of its biodegradability and the possible recovery of iodide ions, which is particularly interesting to reduce its production cost [14,15]. Furthermore, electrochemical reduction processes are particularly promising due to the decreasing cost of renewable electricity, while no extra chemicals is needed [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Improvement of the biodegradability of diatrizoate by electroreduction of its amido groups

Zhang

Soutrel

Amrane

et al. 2022

Separation and Purification Technology

Self Cite

View full text Add to dashboard Cite

Electro-reductive deiodination of iohexol catalyzed by vitamin B12 and biodegradability investigation

Cited by 7 publications

References 52 publications

A Soft Evaporation and Ionization Technique for Mass Spectrometric Analysis and Bio-Imaging of Metal Ions in Plants Based on Metal–Iodide Cluster Ionization

A Soft Evaporation and Ionization Technique for Mass Spectrometric Analysis and Bio-Imaging of Metal Ions in Plants Based on Metal–Iodide Cluster Ionization

Removal of Iodine-Containing X-ray Contrast Media from Environment: The Challenge of a Total Mineralization

Improvement of the biodegradability of diatrizoate by electroreduction of its amido groups

Contact Info

Product

Resources

About