Spectrophotometric investigation of the Acidity constants of fluorescein in various water-organic solvent media
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652036%3A_____%2F08%3A00323597" target="_blank" >RIV/86652036:_____/08:00323597 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Spectrophotometric investigation of the Acidity constants of fluorescein in various water-organic solvent media
Original language description
We use a new procedure for estimating acid ionization constants of fluorescein using the spectrophotometric method at 25_C and at the constant ionic strength I 0.1M (KNO3) in pure water as well as in aqueous media containing variable percentages (10?50%w=v) of organic solvents. The used organic solvents were methanol, ethanol, N,N-dimethyl formamide, dimethyl sulfoxide, acetonitrile, and dioxane. The obtained results indicated that acidity constants decrease as the content of an organic solvent in themedium increases. The acidity constants of all related equilibria are estimated using the whole spectral fitting of the collected data. The DATAN program was applied for determination of acidity constants. The effects of various solvents on absorption properties and acidity constants of each component are also discussed.
Czech name
Spektrofotometrické zkoumání konstatny kyselosti fluoresceinu v různých vodních a organických rozpouštědlech
Czech description
Zde publikujeme novou metodu pro odhad ionizační konstatny fluoresceinu za použití spektrofotometrické metody. Bylo pracováno za konstatní teploty 25°C a konstantantí iontové síly, měření probíhala ve vodných i směsných organických roztocích (metanol, etanol, N, N-dimethyl formamid, dimethyl sulfoxidu, acetonitril a dioxan). Bylo zjištěno, že ionizační konstanta klesá s obsahem organických rozpouštědel
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EB - Genetics and molecular biology
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Communications
ISSN
0098-6445
e-ISSN
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Volume of the periodical
195
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
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UT code for WoS article
000257226100006
EID of the result in the Scopus database
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