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How to protect IC column
Posted: Tue Feb 08, 2011 1:53 pm
by yaakov
In order to prevent overloading of the IC column due to the high chloride concentration I use onguard Ag cartridge. I am afraid that Ag traces will damage the IC column. That is why I need to add onguard cartridge in H+or Na+ form. Which of them is preferable?
Re: How to protect IC column
Posted: Tue Feb 08, 2011 6:49 pm
by tom jupille
H+ is more easily displaced than is Na+
Re: How to protect IC column
Posted: Sat Feb 12, 2011 1:39 pm
by push
That is clear. But H+ catridge will reduce pH.
Re: How to protect IC column
Posted: Sat Feb 12, 2011 1:45 pm
by Consumer Products Guy
Before injection, can you put the sample solution into a syringe and pass through a silver cartridge to remove the chloride BEFORE injection? We've used Grace/Alltech Maxi-Clean Ag to do that, worked good.
I admit that I never did assay for trace Ag+ in the filtrate though...
Re: How to protect IC column
Posted: Sat Feb 12, 2011 4:25 pm
by tom jupille
That is clear. But H+ catridge will reduce pH.
Ok, so you have to decide the extent to which that is a concern. My guess is that unless you are injecting a *huge* sample, it should not be a problem.