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Spectrophotometric investigation of the uranyl-phenylephrine system

Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema

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2007
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Authors
Pavun, Leposava
Malešev, Dušan
Veselinović, Dragan S.
Article (Published version)
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Abstract
Using spectrophotometric methods and pH-metric measurements, it was found that the uranyl ion and phenylephrine form a 1:2 complex in the pH region 2.50-4.25 with two absorption maxima at 314.2 nm and 340.6 nm. The thermodynamic stability constant at I = 0 and T=298 K (room temperature) of the UO2(II)-phenylephrine complex, UO2(C9H12O2N)2, is log 0 β 2= 14.0 and ΔG2= -79.6 kJ mol-1. A linear dependence of the absorbance at 340.6 nm on the concentration of phenylephrine was obtained in the range from 0.0025 mol dm-3 to 0.0245 mol dm-3 using a solution of 0.025 mol dm-3 UO2(NO3)2 at pH = 3.90 and I = 0.075 mol dm-3. The measurement error was 2.1%. .
Primenom spektrofotometrijskih metoda i pH-metrijskih merenja utvrđeno je da UO2(II)-jon i fenilefrin grade 1:2 kompleks u oblasti rN 2,50 - 4,25 sa dva apsorpciona maksimuma na 314,2 nm i 340,6 nm. Termodinamička konstanta stabilnosti kompleksa UO2(II)-fenilefrin, UO2(C9H12O2N)2, na I = 0 i na sobnoj temperaturi (25°C) iznosi log 0 β 2 = 14,0, a ΔG2= = -79,6 kJ mol-1. Linearna zavisnost apsorbancije od koncentracije fenilefrina u vodenom rastvoru UO2(NO3)2 koncentracije 0,025 mol dm-3 na 340,6 nm dobijena je u intervalu 0,0025-0,0245 mol dm-3 na pH 3,90 i I = 0,075 mol dm-3. Greška merenja iznosi 2.1%. .
Keywords:
complex / uranyl ion / phenylephrine / thermodynamic stability constant
Source:
Journal of the Serbian Chemical Society, 2007, 72, 8-9, 799-807
Publisher:
  • Srpsko hemijsko društvo, Beograd

DOI: 10.2298/JSC0709799P

ISSN: 0352-5139

WoS: 000249768600007

Scopus: 2-s2.0-34548381393
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1
URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/1001
Collections
  • Radovi istraživača / Researchers’ publications
Institution
Pharmacy
TY  - JOUR
AU  - Pavun, Leposava
AU  - Malešev, Dušan
AU  - Veselinović, Dragan S.
PY  - 2007
UR  - http://farfar.pharmacy.bg.ac.rs/handle/123456789/1001
AB  - Using spectrophotometric methods and pH-metric measurements, it was found that the uranyl ion and phenylephrine form a 1:2 complex in the pH region 2.50-4.25 with two absorption maxima at 314.2 nm and 340.6 nm. The thermodynamic stability constant at I = 0 and T=298 K (room temperature) of the UO2(II)-phenylephrine complex, UO2(C9H12O2N)2, is log 0 β 2= 14.0 and ΔG2= -79.6 kJ mol-1. A linear dependence of the absorbance at 340.6 nm on the concentration of phenylephrine was obtained in the range from 0.0025 mol dm-3 to 0.0245 mol dm-3 using a solution of 0.025 mol dm-3 UO2(NO3)2 at pH = 3.90 and I = 0.075 mol dm-3. The measurement error was 2.1%. .
AB  - Primenom spektrofotometrijskih metoda i pH-metrijskih merenja utvrđeno je da UO2(II)-jon i fenilefrin grade 1:2 kompleks u oblasti rN 2,50 - 4,25 sa dva apsorpciona maksimuma na 314,2 nm i 340,6 nm. Termodinamička konstanta stabilnosti kompleksa UO2(II)-fenilefrin, UO2(C9H12O2N)2, na I = 0 i na sobnoj temperaturi (25°C) iznosi log 0 β 2 = 14,0, a ΔG2= = -79,6 kJ mol-1. Linearna zavisnost apsorbancije od koncentracije fenilefrina u vodenom rastvoru UO2(NO3)2 koncentracije 0,025 mol dm-3 na 340,6 nm dobijena je u intervalu 0,0025-0,0245 mol dm-3 na pH 3,90 i I = 0,075 mol dm-3. Greška merenja iznosi 2.1%. .
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Spectrophotometric investigation of the uranyl-phenylephrine system
T1  - Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema
VL  - 72
IS  - 8-9
SP  - 799
EP  - 807
DO  - 10.2298/JSC0709799P
ER  - 
@article{
author = "Pavun, Leposava and Malešev, Dušan and Veselinović, Dragan S.",
year = "2007",
url = "http://farfar.pharmacy.bg.ac.rs/handle/123456789/1001",
abstract = "Using spectrophotometric methods and pH-metric measurements, it was found that the uranyl ion and phenylephrine form a 1:2 complex in the pH region 2.50-4.25 with two absorption maxima at 314.2 nm and 340.6 nm. The thermodynamic stability constant at I = 0 and T=298 K (room temperature) of the UO2(II)-phenylephrine complex, UO2(C9H12O2N)2, is log 0 β 2= 14.0 and ΔG2= -79.6 kJ mol-1. A linear dependence of the absorbance at 340.6 nm on the concentration of phenylephrine was obtained in the range from 0.0025 mol dm-3 to 0.0245 mol dm-3 using a solution of 0.025 mol dm-3 UO2(NO3)2 at pH = 3.90 and I = 0.075 mol dm-3. The measurement error was 2.1%. ., Primenom spektrofotometrijskih metoda i pH-metrijskih merenja utvrđeno je da UO2(II)-jon i fenilefrin grade 1:2 kompleks u oblasti rN 2,50 - 4,25 sa dva apsorpciona maksimuma na 314,2 nm i 340,6 nm. Termodinamička konstanta stabilnosti kompleksa UO2(II)-fenilefrin, UO2(C9H12O2N)2, na I = 0 i na sobnoj temperaturi (25°C) iznosi log 0 β 2 = 14,0, a ΔG2= = -79,6 kJ mol-1. Linearna zavisnost apsorbancije od koncentracije fenilefrina u vodenom rastvoru UO2(NO3)2 koncentracije 0,025 mol dm-3 na 340,6 nm dobijena je u intervalu 0,0025-0,0245 mol dm-3 na pH 3,90 i I = 0,075 mol dm-3. Greška merenja iznosi 2.1%. .",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Spectrophotometric investigation of the uranyl-phenylephrine system, Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema",
volume = "72",
number = "8-9",
pages = "799-807",
doi = "10.2298/JSC0709799P"
}
Pavun L, Malešev D, Veselinović DS. Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema. Journal of the Serbian Chemical Society. 2007;72(8-9):799-807
Pavun, L., Malešev, D.,& Veselinović, D. S. (2007). Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema.
Journal of the Serbian Chemical SocietySrpsko hemijsko društvo, Beograd., 72(8-9), 799-807.
https://doi.org/10.2298/JSC0709799P
Pavun Leposava, Malešev Dušan, Veselinović Dragan S., "Spektrofotometrijsko ispitivanje uranil-fenilefrin sistema" 72, no. 8-9 (2007):799-807,
https://doi.org/10.2298/JSC0709799P .

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