TY - JOUR
T1 - On the complex formation of CdCl2 with 1-furoylthioureas
T2 - Preconcentration and voltammetric behavior of Cd(II) at carbon paste electrodes modified with 3-monosubstituted and 3,3-disubstituted derivatives
AU - Estévez-Hernández, O.
AU - Hidalgo-Hidalgo de Cisneros, J. L.
AU - Reguera, E.
AU - Naranjo-Rodríguez, I.
N1 - Funding Information:
O.E.H. thanks Faculty of Sciences (University of Cadiz, Spain), through its PhD program with Havana University. J.L.H.H. and I.N.R. acknowledge the financial support from Junta de Andalucía, FEDER (Fondo Europeo de Desarrollo Económico y Regional) and the Ministerio de Educación y Ciencia of Spain (Project CTQ2004-03708/BQU).
PY - 2007/1/10
Y1 - 2007/1/10
N2 - Two series of 1-furoylthioureas were used as modifiers of carbon paste electrodes (CPE). The preconcentration of Cd(II) at CPE modified with these 3-monosubstituted and 3,3-disubstituted 1-furoylthioureas and its subsequent voltammetric determination was studied with Cd(II) test solution. The preconcentration of cadmium at the surface of the modified CPE varied with the steric and electronic nature of the present CS neighboring groups. This is in accord with the changes observed in the Raman spectra of the ligands after complexation with CdCl2, and with the chemical yields of the complexes obtained.
AB - Two series of 1-furoylthioureas were used as modifiers of carbon paste electrodes (CPE). The preconcentration of Cd(II) at CPE modified with these 3-monosubstituted and 3,3-disubstituted 1-furoylthioureas and its subsequent voltammetric determination was studied with Cd(II) test solution. The preconcentration of cadmium at the surface of the modified CPE varied with the steric and electronic nature of the present CS neighboring groups. This is in accord with the changes observed in the Raman spectra of the ligands after complexation with CdCl2, and with the chemical yields of the complexes obtained.
KW - Carbon paste electrode
KW - Cd(II) complexes
KW - Furoylthioureas
KW - Raman
KW - Surface complex
UR - http://www.scopus.com/inward/record.url?scp=33845773290&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2006.03.042
DO - 10.1016/j.snb.2006.03.042
M3 - Artículo
SN - 0925-4005
VL - 120
SP - 766
EP - 772
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
IS - 2
ER -