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DC Polarography – Dropping Hg electrode (DME) - PowerPoint PPT Presentation


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DC Polarography – Dropping Hg electrode (DME). http://www.ceb.cam.ac.uk/data/images/groups/CREST/Teaching/hydro/fig1.gif. First analytically reproducible electrode, quantitiative metal ion and organic analysis . Prof. Jaraslov Heyrovsky, Charles Univ., Prague, Czech Republic,

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http://www.ceb.cam.ac.uk/data/images/groups/CREST/Teaching/hydro/fig1.gifhttp://www.ceb.cam.ac.uk/data/images/groups/CREST/Teaching/hydro/fig1.gif

First analytically reproducible electrode, quantitiative metal ion and organic analysis

slide4

Prof. Jaraslov Heyrovsky, Charles Univ., Prague, Czech Republic,

Nobel Prize in Chemistry 1959 for discovery of Polarography

Prof. Petr Zuman, Clarkson Univ.

Heyrovsky’s PhD student and my

advisor, “scientific grandpa” to some

of you!

slide5

Modern 3-electrode potentiostat

Voltage follower

Output, I vs. E

To computer

slide6

Counter

= I Rcell

I Ru

working

Counter reference working

slide7

Steady state I-E methods

• dc polarogrpahy

• rotating disk voltammetry

• square wave voltammetry

Square wave input