In situ monitoring of pH titration by Raman spectroscopy

Elbagerma, M. A.; Azimi, Gholamhassan; Edwards, Howell G. M.; Alajtal, A. I.; Scowen, Ian J.

doi:10.1016/j.saa.2010.01.008

Cited by 15 publications

(11 citation statements)

References 18 publications

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“…6(b) and (c)). This can be explained based on paracetamol's chemical structure, 31 which can undergo deprotonation and achieve a stable equilibrium in water (inset of Fig. 6).…”

Section: Resultsmentioning

confidence: 99%

Fast detection of paracetamol on a gold nanoparticle–chitosan substrate by SERS

Santos

Lima²,

Oliveira

et al. 2014

Anal. Methods

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“…6(b) and (c)). This can be explained based on paracetamol's chemical structure, 31 which can undergo deprotonation and achieve a stable equilibrium in water (inset of Fig. 6).…”

Section: Resultsmentioning

confidence: 99%

Fast detection of paracetamol on a gold nanoparticle–chitosan substrate by SERS

Santos

Lima²,

Oliveira

et al. 2014

Anal. Methods

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“…For other molecules, pKa measurements using Raman spectroscopy were reported, even if there is no standard methodology to extract pKa values from spectra. For instance, Elbagerma et al .…”

Section: Introductionmentioning

confidence: 99%

Monitoring deprotonation of gallic acid by Raman spectroscopy

Huguenin

Hamady

Bourson

2015

J Raman Spectroscopy

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Gallic acid (GA) is involved in many biochemical processes and reactions and is of great importance in environment thanks to its antioxidant and pro‐oxidant properties. We present in this paper a comprehensive study of GA deprotonation by means of Raman spectroscopy. In the Raman spectra, we identified the characteristic bands that were sensitive to the five pH‐dependent GA forms. From these results, we extracted the GA pKa values that are consistent with the reference values. These results permit the monitoring of GA forms for applications. Copyright © 2015 John Wiley & Sons, Ltd.

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“…4). Detailed peaks positions and assignments are presented in Table 4 (bands assignment was based on [38,40,[60][61][62][63][64]). These results imply the Sal adsorption on the precipitated hydroxide and formation of soluble complex with Fe(III) incorporated in the corrosion products.…”

Section: Carboxylate Interaction With Corroding Mg By Vibrational Spectroscopymentioning

confidence: 99%

In situ surface film evolution during Mg aqueous corrosion in presence of selected carboxylates

et al. 2020

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Mechanisms of inhibition of Mg aqueous corrosion in presence of chloride by sodium salicylate (Sal), 2,5-pyridinedicarboxylate (PDC) and fumarate (Fum) were studied by in situ Raman spectroscopy, ATR-FTIR, GD-OES and hydrogen collection. In situ detected surface films were composed by Mg(OH) 2 nano-crystals and included inhibitors. All carboxylates significantly modified Mg(OH) 2 growth kinetics as well as pevented chloride incorporation in the film. Vibrational spectra of the surface films demonstrated specific interactions between the carboxylates and the surface: adsorption of Sal and Fum on the oxide/hydroxide, precipitation of coordination polymer by PDC, dissolution of iron inclusions via formation of iron-Sal soluble complexes. Highlights: Carboxylates modify kinetics of Mg(OH) 2 film growth on Mg during aqueous corrosion;  Mg(OH) 2 nano-crystals formed in inhibitors solutions limit Claccess to Mg surface;  Salicylate adsorbs chemically on Mg(OH) 2 , dissolves Fe-containing inclusions;  2,5-pyridinedicarboxylate precipitates in the form of coordination polymer;  Inhibition by fumarate seems to be due to adsorption via carboxylate group.

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In situ monitoring of pH titration by Raman spectroscopy

Cited by 15 publications

References 18 publications

Fast detection of paracetamol on a gold nanoparticle–chitosan substrate by SERS

Fast detection of paracetamol on a gold nanoparticle–chitosan substrate by SERS

Monitoring deprotonation of gallic acid by Raman spectroscopy

In situ surface film evolution during Mg aqueous corrosion in presence of selected carboxylates

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