Issue Information :
ماهنامه با شماره پیاپی سال 2005
Pages :
-842
From page :
843
To page :
0
Abstract :
A chemically modified electrode (CME) was prepared and studied as a potentiometric sensor for the end-point detection in the automatic titration of vanadium(V) with EDTA. The CME was constructed with a paste prepared by mixing spectral-grade graphite powder, Nujol oil and N-2-naphthoyl-N-ptolylhydroxamic acid (NTHA). Buffer systems, pH effects and the concentration range were studied. Interference ions were separated by applying a liquid-liquid extraction procedure. The CME did not require any special conditioning before using. The electrode was constructed with very inexpensive materials and was easily made. It could be continuously used, at least two months without removing the paste. Automatic potentiometric titration curves were obtained for V(V) within 5 × 10^-5 to 2 × 10^-3 M with acceptable accuracy and precision. The developed method was applied to V(V) determination in alloys for hip prothesis.
Journal title :
Talanta
Serial Year :
2005
Journal title :
Talanta
Record number :
111626
Link To Document :
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