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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Naaga on April 24, 2017, 03:46:11 PM

Title: Ion chromatrography
Post by: Naaga on April 24, 2017, 03:46:11 PM
Hallo :)
I have understood that there is a difference between ion chromatography and ion exchange chromatography, but I have led and can not figure out what the difference is.
I know that IEC is HPLC with another kind of colunm. But I thought it was the same as ion chromatography.
Is there anyone who can help me with the difference?

Thanks.
Title: Re: Ion chromatrography
Post by: Arkcon on April 24, 2017, 08:23:00 PM
Hallo :)
I have understood that there is a difference between ion chromatography and ion exchange chromatography,

There is.

Quote
but I have led and can not figure out what the difference is.

OK.  Lets start with the definitions for each that you have.

Quote
I know that IEC is HPLC with another kind of colunm. But I thought it was the same as ion chromatography.

Yes they will use different columns and eluents, but there's a bit more to ion chromatography.

Quote
Is there anyone who can help me with the difference?

Thanks.
Title: Re: Ion chromatrography
Post by: Naaga on April 25, 2017, 09:31:01 AM
IEC = stationary phase for HPLC
IC = technique/system developed for the separation of inorganic ions and organic acids
with inline conductivity detector.

How does the column work ?
I found that the ions binds directly to the ion-exchange resins but I also found that there is a barrier around the resins where only particles with no charge can pass through, so it is only the particals with no charge that binds directly to the resins.
Which is correct ?