Hypochlorite determination by IC?

[peterjakab]

Hello,

Is it possible to measere hypochlorite (ClO-) anion (high dilution, low level concentration, ppb-ppm range) with the following setup, KOH EG, AS19 column, ADRS 600 suppressor, CD detector?

I didn't find any application note where the measurable compound is ClO- and the Virtual Column Simulator don't contain that analyte.

I'm worried about the following:

-cause damage on the stationary phase

-cause damage on the suppressor membrane

Can I be brave enought to inject this type of sample? 🙂

Thank you!

[Molly_I2]

@peterjakab Great to see your question and welcome back. Let me start the conversation on our side for you and see what we can find out. @The_Ion_Lady and @chris-shevlin, hoping you can help me sort some information for peterjakab.

[JeffRohrer · Accepted solution]

The problem is that it is not very stable and will convert to chlorite, chlorate, and chloride (mostly the last two as chlorite will be an intermediate).  Hypochlorite is also a weak acid and not likely to be detected by suppressed conductivity. Older work (>30 years) showed detection with a platinum working electrode. That would be a good research project but you would still have the problem with the analyte's instability.

[peterjakab]

Dear @JeffRohrer 

I understand. Thank you your help and answer!

[Molly_I2]

@peterjakab I thought I would follow up and mention that we do have a link for technical support that takes you directly to a team to help with troubleshooting Contact Us | Thermo Fisher Scientific - US 

Usually, by using a relevant product sku you can get in touch with the right team fairly quickly. If you think you need a more detailed discussion about your method in particular, this might be a good resource for you.