Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions
Authors
Grozdanić, NikolaCalado, Marta S.
Kijevčanin, Mirjana
Šerbanović, Slobodan P.
Višak, Zoran P.
Article (Published version)
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This work is a continuation of previous studies on phase demixing - salting-out effects in aqueous nicotine solutions. Thus, pH measurements were performed, allowing a brief analysis of the existing hydrogen bond interactions. Salting-out effects the related experimental cloud point shifts provoked by the addition of two inorganic salts, potassium nitrate and sodium sulfate, which have not hitherto been studied, were determined. Analysis of the current and previously reported salting-out/or salting-in phenomena in nicotine aqueous solutions was performed. In this respect, five studied salts were included: four inorganic salts (sodium chloride, potassium nitrate, sodium sulfate and trisodium phosphate (Na3PO4)), and ionic the liquid 1-ethyl-3-methylimidazolium ethyl sulfate ([C(2)mim][EtSO4], commercial name ECOENG212 (R)). Based on pH measurements, the effective Gibbs energies of hydration and the ionic strengths of the respective ternary solutions were calculated and plotted against t...he related cloud-point shifts caused by the addition of the salts. For the studied salts, the results and diagram obtained within this work may be used to predict the cloud-points shifts, based on the related quantities of the salts added and/or the molar Gibbs energies of hydration and/or ionic strengths requested in each case.
Keywords:
inorganic salts / ionic liquids / pH measurements of solutionsSource:
Journal of the Serbian Chemical Society, 2014, 79, 7, 829-842Publisher:
- Srpsko hemijsko društvo, Beograd
Funding / projects:
- New industrial and environmental application of chemical thermodynamics to the development of the chemical processes with multiphase and multicomponent systems (RS-172063)
- Fundacao para a Ciencia e a Tecnologia (FCT), PortugalPortuguese Foundation for Science and Technology [PTDC/EQU-EPR/103505/2008]
- Projecto Estrategico [PEst-OE/QUI/UI0100/2013]
- Instituto Superior Tecnico, Portugal
DOI: 10.2298/JSC130817109G
ISSN: 0352-5139
WoS: 000339931600007
Scopus: 2-s2.0-84902445174
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Grozdanić, Nikola AU - Calado, Marta S. AU - Kijevčanin, Mirjana AU - Šerbanović, Slobodan P. AU - Višak, Zoran P. PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2807 AB - This work is a continuation of previous studies on phase demixing - salting-out effects in aqueous nicotine solutions. Thus, pH measurements were performed, allowing a brief analysis of the existing hydrogen bond interactions. Salting-out effects the related experimental cloud point shifts provoked by the addition of two inorganic salts, potassium nitrate and sodium sulfate, which have not hitherto been studied, were determined. Analysis of the current and previously reported salting-out/or salting-in phenomena in nicotine aqueous solutions was performed. In this respect, five studied salts were included: four inorganic salts (sodium chloride, potassium nitrate, sodium sulfate and trisodium phosphate (Na3PO4)), and ionic the liquid 1-ethyl-3-methylimidazolium ethyl sulfate ([C(2)mim][EtSO4], commercial name ECOENG212 (R)). Based on pH measurements, the effective Gibbs energies of hydration and the ionic strengths of the respective ternary solutions were calculated and plotted against the related cloud-point shifts caused by the addition of the salts. For the studied salts, the results and diagram obtained within this work may be used to predict the cloud-points shifts, based on the related quantities of the salts added and/or the molar Gibbs energies of hydration and/or ionic strengths requested in each case. PB - Srpsko hemijsko društvo, Beograd T2 - Journal of the Serbian Chemical Society T1 - Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions EP - 842 IS - 7 SP - 829 VL - 79 DO - 10.2298/JSC130817109G ER -
@article{ author = "Grozdanić, Nikola and Calado, Marta S. and Kijevčanin, Mirjana and Šerbanović, Slobodan P. and Višak, Zoran P.", year = "2014", abstract = "This work is a continuation of previous studies on phase demixing - salting-out effects in aqueous nicotine solutions. Thus, pH measurements were performed, allowing a brief analysis of the existing hydrogen bond interactions. Salting-out effects the related experimental cloud point shifts provoked by the addition of two inorganic salts, potassium nitrate and sodium sulfate, which have not hitherto been studied, were determined. Analysis of the current and previously reported salting-out/or salting-in phenomena in nicotine aqueous solutions was performed. In this respect, five studied salts were included: four inorganic salts (sodium chloride, potassium nitrate, sodium sulfate and trisodium phosphate (Na3PO4)), and ionic the liquid 1-ethyl-3-methylimidazolium ethyl sulfate ([C(2)mim][EtSO4], commercial name ECOENG212 (R)). Based on pH measurements, the effective Gibbs energies of hydration and the ionic strengths of the respective ternary solutions were calculated and plotted against the related cloud-point shifts caused by the addition of the salts. For the studied salts, the results and diagram obtained within this work may be used to predict the cloud-points shifts, based on the related quantities of the salts added and/or the molar Gibbs energies of hydration and/or ionic strengths requested in each case.", publisher = "Srpsko hemijsko društvo, Beograd", journal = "Journal of the Serbian Chemical Society", title = "Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions", pages = "842-829", number = "7", volume = "79", doi = "10.2298/JSC130817109G" }
Grozdanić, N., Calado, M. S., Kijevčanin, M., Šerbanović, S. P.,& Višak, Z. P.. (2014). Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions. in Journal of the Serbian Chemical Society Srpsko hemijsko društvo, Beograd., 79(7), 829-842. https://doi.org/10.2298/JSC130817109G
Grozdanić N, Calado MS, Kijevčanin M, Šerbanović SP, Višak ZP. Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions. in Journal of the Serbian Chemical Society. 2014;79(7):829-842. doi:10.2298/JSC130817109G .
Grozdanić, Nikola, Calado, Marta S., Kijevčanin, Mirjana, Šerbanović, Slobodan P., Višak, Zoran P., "Aqueous nicotine solutions: pH-measurements and salting-out effects - Analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions" in Journal of the Serbian Chemical Society, 79, no. 7 (2014):829-842, https://doi.org/10.2298/JSC130817109G . .