TY - JOUR
T1 - Voltammetry of chromium(VI) at the liquid|liquid interface
AU - O'Mahony, Aoife M.
AU - Scanlon, Micheál D.
AU - Berduque, Alfonso
AU - Beni, Valerio
AU - Arrigan, Damien W.M.
AU - Faggi, Enrico
AU - Bencini, Andrea
PY - 2005/10
Y1 - 2005/10
N2 - The voltammetry of hexavalent chromium (ammonium dichromate) at the interface between two immiscible electrolyte solutions is reported. Detection of Cr(VI) by ion transfer voltammetry is possible by use of an organic phase ionophore, which facilitates the transfer of Cr(VI) from the aqueous into the organic phase. The ionophore was the penta protonated form of polyamine macrocycle 2,5,8,11,14-pentaaza[15]-16,29-phenanthrolinophane (NeoTT). Cyclic voltammetry showed an increase of the peak current on increasing the concentration of Cr(VI). Square wave voltammetry with background subtraction was employed for low level concentration detection. The lowest concentration detected was 0.25 parts per million of Cr(VI).
AB - The voltammetry of hexavalent chromium (ammonium dichromate) at the interface between two immiscible electrolyte solutions is reported. Detection of Cr(VI) by ion transfer voltammetry is possible by use of an organic phase ionophore, which facilitates the transfer of Cr(VI) from the aqueous into the organic phase. The ionophore was the penta protonated form of polyamine macrocycle 2,5,8,11,14-pentaaza[15]-16,29-phenanthrolinophane (NeoTT). Cyclic voltammetry showed an increase of the peak current on increasing the concentration of Cr(VI). Square wave voltammetry with background subtraction was employed for low level concentration detection. The lowest concentration detected was 0.25 parts per million of Cr(VI).
KW - Ammonium dichromate
KW - Facilitated ion transfer
KW - Hexavalent chromium
KW - ITIES
KW - Liquid|liquid interface
UR - http://www.scopus.com/inward/record.url?scp=25444480487&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2005.06.011
DO - 10.1016/j.elecom.2005.06.011
M3 - Article
AN - SCOPUS:25444480487
SN - 1388-2481
VL - 7
SP - 976
EP - 982
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 10
ER -