TY - JOUR
T1 - Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl
AU - Tshuma, Joel
AU - Alarcón-Ángeles, Georgina
AU - Palacios-Beas, Elia
AU - Vargas-García, Roberto
AU - Ramírez-Silva, María Teresa
AU - Rojas-Hernández, Alberto
N1 - Funding Information:
We want to acknowledge by partial financial support to CONACyT through the 46124 project and to PROMEP through the Analytical Chemistry Group UAM-I-CA-33, PIFI-3.
PY - 2007/4
Y1 - 2007/4
N2 - The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pKa2 = 8.551 ± 0.024 and pKa3 = 11.728 ± 0.016.
AB - The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pKa2 = 8.551 ± 0.024 and pKa3 = 11.728 ± 0.016.
KW - Acidity constants
KW - Chelating agents
KW - Hydroxyoximes
KW - Oximes
UR - http://www.scopus.com/inward/record.url?scp=33847417552&partnerID=8YFLogxK
U2 - 10.1016/j.saa.2006.05.004
DO - 10.1016/j.saa.2006.05.004
M3 - Artículo
SN - 1386-1425
VL - 66
SP - 879
EP - 883
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
IS - 4-5
ER -