Oxidation of paracetamol by Cu<sup>2+</sup> – formation of the paracetamol radical cation

Ostrowski, Wojciech; Karczewska, Katarzyna; Frański, Rafał

doi:10.1002/rcm.6583

Cited by 3 publications

(3 citation statements)

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“…Paracetamol shows fragmentation path CID ( m / z 152)→152, (134,) 110 ( Figure 2 , Figures S1, S3 and S4 ) [ 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 ] (see chemical diagrams of species in Figure S2 ). Its dimer [2M+H] + shows fragmentation path CID ( m / z 303)→303, 152 [ 69 , 75 ].…”

Section: Resultsmentioning

confidence: 99%

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Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Ivanova

2023

IJMS

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Mass spectrometric innovations in analytical instrumentation tend to be accompanied by the development of a data-processing methodology, expecting to gain molecular-level insights into real-life objects. Qualitative and semi-quantitative methods have been replaced routinely by precise, accurate, selective, and sensitive quantitative ones. Currently, mass spectrometric 3D molecular structural methods are attractive. As an attempt to establish a reliable link between quantitative and 3D structural analyses, there has been developed an innovative formula [DSD″,tot=∑inDSD″,i=∑in2.6388.10−17×Ii2¯−Ii¯2] capable of the exact determination of the analyte amount and its 3D structure. It processed, herein, ultra-high resolution mass spectrometric variables of paracetamol, atenolol, propranolol, and benzalkonium chlorides in biota, using mussel tissue and sewage sludge. Quantum chemistry and chemometrics were also used. Results: Data on mixtures of antibiotics and surfactants in biota and the linear dynamic range of concentrations 2–80 ng.(mL)−1 and collision energy CE = 5–60 V are provided. Quantitative analysis of surfactants in biota via calibration equation ln[D″SD] = f(conc.) yields the exact parameter |r| = 0.99991, examining the peaks of BAC-C12 at m/z 212.209 ± 0.1 and 211.75 ± 0.15 for tautomers of fragmentation ions. Exact parameter |r| = 1 has been obtained, correlating the theory and experiments in determining the 3D molecular structures of ions of paracetamol at m/z 152, 158, 174, 301, and 325 in biota.

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Section: Resultsmentioning

confidence: 99%

“…The ammonium adduct [2M+NH 4 ] + exhibits a low-abundance peak at m / z 320 [ 75 ]. MS analysis of PARA radical-cations has been reported [ 72 ]. Fragmentation processes, involving a radical-cation mechanism of bond cleavage, have been proposed [ 77 ].…”

Section: Resultsmentioning

confidence: 99%

Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Ivanova

2023

IJMS

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“…Thus, the basic principle of kinetic method is to measure, the change in concentration of reactants with time, catalyst can increase the reaction rate. Recent advance in analytical techniques have facilitated measurements of very low concentration of drug [76].…”

Section: Introductionmentioning

confidence: 99%

Kinetics and mechanistic study of oxidation of paracetamol: an accelerated catalytic approach

Negi

Jain²,

Singh³

et al. 2019

SN Appl. Sci.

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In the present paper, a simple, and novel method for the abatement of paracetamol (PA) in aqueous system into environmental friendly compound benzoquinone at 308 K has been described, and was accelerated by simple, and inexpensive catalyst Cu(II)/Ni(II). A comparative assessment between Cu(II) and Ni(II)catalyzed, abatement of PA by CAT was performed. It has been determined that there are very little change in rate of reaction for both Cu(II)/Ni(II) catalyzed degradation of PA. All the kinetics parameters, i.e. the effect of change in concentrations of chloramine-T (CAT), sodium hydroxide, paracetamol, catalyst, added p-toluenesulfonamide, electrolyte etc. have been studied, and measured carefully. Reaction had been studied in the range of temperature 303-323 K. On the basis of kinetic data obtained a satisfactory mechanism has been proposed. And it was deduced that, presently used process was a tenable technique for the degradation of PA. Main abatement product was confirmed by GC-MS analysis technique.

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Influence of carboxylic group or methyl ester group on the interactions of copper cation with aromatic system of naproxen, naphthalene acetic acids and their methyl esters

Frański

Zalas

Gierczyk

2016

International Journal of Mass Spectrometry

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Oxidation of paracetamol by Cu²⁺ – formation of the paracetamol radical cation

Cited by 3 publications

References 26 publications

Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Kinetics and mechanistic study of oxidation of paracetamol: an accelerated catalytic approach

Influence of carboxylic group or methyl ester group on the interactions of copper cation with aromatic system of naproxen, naphthalene acetic acids and their methyl esters

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Oxidation of paracetamol by Cu2+ – formation of the paracetamol radical cation

Cited by 3 publications

References 26 publications

Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Stochastic Dynamic Mass Spectrometric Quantitative and Structural Analyses of Pharmaceutics and Biocides in Biota and Sewage Sludge

Kinetics and mechanistic study of oxidation of paracetamol: an accelerated catalytic approach

Influence of carboxylic group or methyl ester group on the interactions of copper cation with aromatic system of naproxen, naphthalene acetic acids and their methyl esters

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Oxidation of paracetamol by Cu²⁺ – formation of the paracetamol radical cation