Ion Chromatography
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Forum Posts

Resolved! Troubleshooting: Too little suppressing current for KOH eluent.

Hello team, I need your insights on the recent incident we had on our IC. What happened was that one of our analysts set a wrong suppressor current (50mA) for a sequence using 35mM KOH as eluent (recommended is 87-141 mA). IC system was exposed to su...

5kyul by Involved Contributor II
  • 325 Views
  • 7 replies
  • 1 kudos

Resolved! Conductivity Detector Cell Issue

Dear Community, We had an issue with the conductivity detector, so I am looking for any idea and/or related troubleshooting experience. What happened is that the baseline signal is periodically decrease (up to 0.2 µS) and comes back up over a span of...

5kyul by Involved Contributor II
  • 792 Views
  • 7 replies
  • 1 kudos

Resolved! Nitrite determination in domestic wastewater

Dear Community, The goal anion (F, Cl, NO2, NO3, SO4, PO4) analysis in domestic wastewater (particules, hydrophobic matrices) We have to reach LOD 50 ug/L for nitrite, for the others the LODs are higher. I'm thinking about the following, with some qu...

peterjakab by Involved Contributor II
  • 589 Views
  • 3 replies
  • 1 kudos

Resolved! Iodate, periodate by IC

Dear IC Community,I would like measure iodate, periodate.I fould one application (what is no MS detection) for iodate determination, based on IC-PAD (AN37).The Virtual Column Simulator shows coelution for F and IO3 with KOH eluents, and just a minima...

peterjakab by Involved Contributor II
  • 797 Views
  • 3 replies
  • 0 kudos

Acetate ion determination polymers using KOH

I am using As19 thermo column and DRS600 suppressor on ICS6000. The Eluent is KOH. The suppressor is operated in Dynamic mode. Acetate seems to appear and then disappear. I am trying to calibrate 0.25 mg/L to 20 mg/L. along with Fluoride, nitrate, ch...