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Units of amperometric and coulometric modes

http://www.chromforum.org/viewtopic.php?t=21564

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Units of amperometric and coulometric modes

Posted: Thu Dec 20, 2012 1:11 am
by thohry
Hi all,

I have some methods using ECD detector in amperometric mode and the signal considered is in the scale of nC. I thought in amperometry, the unit is in nA and in coulometry it is in nC. Am I wrong at some points ?

Thanks

Re: Units of amperometric and coulometric modes

Posted: Mon Jan 07, 2013 1:11 pm
by Markus Laeubli, Metrohm
Dear thohry

You are right amperometry usually meaures current (I) and coulometry measures charge (Q). But especially in Pulsed Amperometric Detection charge is quite often charge or integrated (over time) current is measured.
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