Partial Molar Volumes of Glycine and DL-Alanine in Aqueous Ammonium Sulfate Solutions at (278.15, 288.15, 298.15 and 308.15) K.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43897095" target="_blank" >RIV/60461373:22340/14:43897095 - isvavai.cz</a>

Výsledek na webu

<a href="http://link.springer.com/article/10.1007/s10953-014-0172-5" target="_blank" >http://link.springer.com/article/10.1007/s10953-014-0172-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10953-014-0172-5" target="_blank" >10.1007/s10953-014-0172-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Partial Molar Volumes of Glycine and DL-Alanine in Aqueous Ammonium Sulfate Solutions at (278.15, 288.15, 298.15 and 308.15) K.

Popis výsledku v původním jazyce

In this work, the partial molar volumes of glycine and DL-alanine in aqueous solutions of ammonium sulfate at (0.0, 0.1, 0.3, 0.7, and 1.0) molal are addressed between 278.15 and 308.15 K. Transfer volumes were obtained, which are larger for glycine thanDL-alanine. On the contrary, the hydration numbers are higher for DL-alanine than glycine, and dehydration of the amino acids is observed, rising the temperature or salt molality. The data suggest that interactions between ion and charged/hydrophilic groups are predominant and by applying the methodology proposed by Friedman and Krishnan it was concluded that they are mainly pair wise. A group-contribution scheme has been successfully applied to the pairwise volumetric interaction coefficient. Finally,the dehydration effect on glycine, alanine and serine in the presence of different electrolytes has been rationalized in terms of the charge density and a parameter accounting for the cation hydration.

Název v anglickém jazyce

Partial Molar Volumes of Glycine and DL-Alanine in Aqueous Ammonium Sulfate Solutions at (278.15, 288.15, 298.15 and 308.15) K.

Popis výsledku anglicky

In this work, the partial molar volumes of glycine and DL-alanine in aqueous solutions of ammonium sulfate at (0.0, 0.1, 0.3, 0.7, and 1.0) molal are addressed between 278.15 and 308.15 K. Transfer volumes were obtained, which are larger for glycine thanDL-alanine. On the contrary, the hydration numbers are higher for DL-alanine than glycine, and dehydration of the amino acids is observed, rising the temperature or salt molality. The data suggest that interactions between ion and charged/hydrophilic groups are predominant and by applying the methodology proposed by Friedman and Krishnan it was concluded that they are mainly pair wise. A group-contribution scheme has been successfully applied to the pairwise volumetric interaction coefficient. Finally,the dehydration effect on glycine, alanine and serine in the presence of different electrolytes has been rationalized in terms of the charge density and a parameter accounting for the cation hydration.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal Solution Chem.

ISSN

0095-9782

e-ISSN

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Svazek periodika

43

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

972-988

Kód UT WoS článku

000338666900011

EID výsledku v databázi Scopus

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