University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Potentiometry

Classification: Potentiometry -> oscillographic

Citations 1

"Oscillating Flow Injection Stripping Potentiometry"
Anal. Chim. Acta 1995 Volume 309, Issue 1-3 Pages 293-299

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Spas D. Kolev, Christopher W. K. Chow, David E. Davey* and Dennis E. Mulcahy

Abstract: Portions of 100 µL of a solution of Cu(II) in 100 mM HCl were injected into a carrier stream (2 ml/min) of 1 mg/l of mercury(II) nitrate in 100 mM HCl and were mixed in a 1.5 m long PTFE coil. The mixed solution was passed to a flow cell and portions of 267 µL oscillated to-and-fro over a Pt auxiliary electrode plus a Hg-coated glassy C electrode at -900 mV vs. a Ag/AgCl reference electrode sited in the waste stream. Using zero, 4 and 8 sample oscillations, calibration graphs were linear for 0-1000 ppb of Cu(II), non-linearity being observed with 16 sample oscillations.
Copper(II)