АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ
The investigations of acid-base interactions in aminomethanesulfonic acid (AMSA)–potassium aminomethanesulfonate–water and alkylaminomethanesulfonic acid–potassium alkylaminomethane-sulfonate–water systems, where alkyl are methyl (MeAMSA), N-(2-hydroxyethyl) (HEAMSA), n-propyl (n-PrAMSA), n-butyl (n...
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| Datum: | 2019 |
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| Sprache: | English |
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V.I.Vernadsky Institute of General and Inorganic Chemistry
2019
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oai:ojs2.1444248.nisspano.web.hosting-test.net:article-792019-11-04T11:07:49Z AMINOMETHANSULFONIC AND ALKYLAMINOMETHANSULFONIC BUFFER SYSTEMS АМИНОМЕТАНСУЛЬФОНАТНАЯ И АЛКИЛАМИНОМЕТАНСУЛЬФОНАТНЫЕ БУФЕРНЫЕ СИСТЕМЫ АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ Khoma, Ruslan Ennan, Alim Chebotarev, Aleksandr Vodzinskii, Sergey aminomethanesulfonic acids, buffer solutions, buffer capacity, lipophilicity. The investigations of acid-base interactions in aminomethanesulfonic acid (AMSA)–potassium aminomethanesulfonate–water and alkylaminomethanesulfonic acid–potassium alkylaminomethane-sulfonate–water systems, where alkyl are methyl (MeAMSA), N-(2-hydroxyethyl) (HEAMSA), n-propyl (n-PrAMSA), n-butyl (n-BuAMSA), tert-butyl (t-BuAMSA), n-heptyl (n-HpAMSA) and benzyl (BzAMSA) were performed in temperature range 293–313 К. Buffer action pH limits were determined and the buffer capacity of these systems was estimated.Based on the evaluation of buffer action pH limits of aminomethansulfonic acids, it has been found that with the help of n-PrAMSA and n-BuAMSA, it was possible to maintain the medium acidity in the range of physiological pH values throughout the range of investigated temperatures.As the temperature rises, the pH of the lower buffer limit increases for AMSA and n-BuAMSA systems, while for HEAMSA, t-BuAMSA, n-HpA-MSA and BzAMSA decreases. The value of the pH of the upper buffer threshold for all tested systems decreases during their heating. With the increase of the electron-donor properties of the N-substituent in the AMSA–MeAMSA–HEAMSA–t-BuAMSA series, the value of their electronegativity decreases to result in lowering of the pH values of the lower buf-fering action limit of these systems. For the more lipophilic N-substituents (n-C4H9, n-C7H15 and C6H5CH2), this regularity is not typical.It has been established that with increasing the CYAMSK/CYAMSA concentration ratio, the buffer capacity of YNHCH2SO3H–YNHCH2SO3K–H2O systems with hydrophilic aminomethansulfonic acids (Y = H, CH3 and HOCH2CH2) increases. For systems with lipophilic n-PrAMSA and t-BuAMSA, their buffer capacity doesn’t change at 0.4 ≤ QKOH/QYAMSA ≤ 1.0.The obtained data on the buffer capacity of the investigated systems is recommended for use in chemical analysis, microbiological and biochemical studies. V.I.Vernadsky Institute of General and Inorganic Chemistry 2019-11-01 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/79 10.33609/0041-6045.85.9.2019.3-16 Ukrainian Chemistry Journal; Vol. 85 No. 9 (2019): Ukrainian Chemistry Journal; 3-16 Украинский химический журнал; Том 85 № 9 (2019): Украинский химический журнал; 3-16 Український хімічний журнал; Том 85 № 9 (2019): Український хімічний журнал; 3-16 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/79/52 |
| institution |
Ukrainian Chemistry Journal |
| baseUrl_str |
|
| datestamp_date |
2019-11-04T11:07:49Z |
| collection |
OJS |
| language |
English |
| topic_facet |
aminomethanesulfonic acids buffer solutions buffer capacity lipophilicity. |
| format |
Article |
| author |
Khoma, Ruslan Ennan, Alim Chebotarev, Aleksandr Vodzinskii, Sergey |
| spellingShingle |
Khoma, Ruslan Ennan, Alim Chebotarev, Aleksandr Vodzinskii, Sergey АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| author_facet |
Khoma, Ruslan Ennan, Alim Chebotarev, Aleksandr Vodzinskii, Sergey |
| author_sort |
Khoma, Ruslan |
| title |
АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| title_short |
АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| title_full |
АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| title_fullStr |
АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| title_full_unstemmed |
АМІНОМЕТАНСУЛЬФОНАТНА ТА АЛКІЛАМІНОМЕТАНСУЛЬФОНАТНІ БУФЕРНІ СИСТЕМИ |
| title_sort |
амінометансульфонатна та алкіламінометансульфонатні буферні системи |
| title_alt |
AMINOMETHANSULFONIC AND ALKYLAMINOMETHANSULFONIC BUFFER SYSTEMS АМИНОМЕТАНСУЛЬФОНАТНАЯ И АЛКИЛАМИНОМЕТАНСУЛЬФОНАТНЫЕ БУФЕРНЫЕ СИСТЕМЫ |
| description |
The investigations of acid-base interactions in aminomethanesulfonic acid (AMSA)–potassium aminomethanesulfonate–water and alkylaminomethanesulfonic acid–potassium alkylaminomethane-sulfonate–water systems, where alkyl are methyl (MeAMSA), N-(2-hydroxyethyl) (HEAMSA), n-propyl (n-PrAMSA), n-butyl (n-BuAMSA), tert-butyl (t-BuAMSA), n-heptyl (n-HpAMSA) and benzyl (BzAMSA) were performed in temperature range 293–313 К. Buffer action pH limits were determined and the buffer capacity of these systems was estimated.Based on the evaluation of buffer action pH limits of aminomethansulfonic acids, it has been found that with the help of n-PrAMSA and n-BuAMSA, it was possible to maintain the medium acidity in the range of physiological pH values throughout the range of investigated temperatures.As the temperature rises, the pH of the lower buffer limit increases for AMSA and n-BuAMSA systems, while for HEAMSA, t-BuAMSA, n-HpA-MSA and BzAMSA decreases. The value of the pH of the upper buffer threshold for all tested systems decreases during their heating. With the increase of the electron-donor properties of the N-substituent in the AMSA–MeAMSA–HEAMSA–t-BuAMSA series, the value of their electronegativity decreases to result in lowering of the pH values of the lower buf-fering action limit of these systems. For the more lipophilic N-substituents (n-C4H9, n-C7H15 and C6H5CH2), this regularity is not typical.It has been established that with increasing the CYAMSK/CYAMSA concentration ratio, the buffer capacity of YNHCH2SO3H–YNHCH2SO3K–H2O systems with hydrophilic aminomethansulfonic acids (Y = H, CH3 and HOCH2CH2) increases. For systems with lipophilic n-PrAMSA and t-BuAMSA, their buffer capacity doesn’t change at 0.4 ≤ QKOH/QYAMSA ≤ 1.0.The obtained data on the buffer capacity of the investigated systems is recommended for use in chemical analysis, microbiological and biochemical studies. |
| publisher |
V.I.Vernadsky Institute of General and Inorganic Chemistry |
| publishDate |
2019 |
| url |
https://ucj.org.ua/index.php/journal/article/view/79 |
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