TY - JOUR
T1 - Electrochemical Determination of Trace Amounts of Gold(III) by Anodic Stripping Voltammetry Using a Chemically Modified Electrode
AU - Turyan, Iva
AU - Mandler, Daniel
PY - 1993/8/1
Y1 - 1993/8/1
N2 - An electrochemically pretreated glassy carbon electrode (GCE) modified with an aza crown ether, 8,9,17,18-dibenzo-1,7-dioxa-10,13,16-triazacyclooctadecane (DDTC), has been used for the very sensitive and selective analysis of trace amounts of gold(III). A detection limit of 4.2 × 10-10 M was obtained by applying anodic stripping voltammetry. The parameters that affect the sensitivity and possible interferences by other ions have been examined in detail. The modified electrodes exhibit high stability and, therefore, have been used repeatedly without mechanical regeneration. Finally, the method has been successfully applied to determine gold traces in a geological sample.
AB - An electrochemically pretreated glassy carbon electrode (GCE) modified with an aza crown ether, 8,9,17,18-dibenzo-1,7-dioxa-10,13,16-triazacyclooctadecane (DDTC), has been used for the very sensitive and selective analysis of trace amounts of gold(III). A detection limit of 4.2 × 10-10 M was obtained by applying anodic stripping voltammetry. The parameters that affect the sensitivity and possible interferences by other ions have been examined in detail. The modified electrodes exhibit high stability and, therefore, have been used repeatedly without mechanical regeneration. Finally, the method has been successfully applied to determine gold traces in a geological sample.
UR - http://www.scopus.com/inward/record.url?scp=0001239029&partnerID=8YFLogxK
U2 - 10.1021/ac00063a026
DO - 10.1021/ac00063a026
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AN - SCOPUS:0001239029
SN - 0003-2700
VL - 65
SP - 2089
EP - 2092
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 15
ER -