IonPacAS9-SC
034656-06
Page 3 of 28
4.6
Eluents that Contain Solvents .............................................................................................................................. 13
4.7
Regenerant Preparation for the AMMS III ....................................................................................................... 13
4.8
The Sample Concentrator .................................................................................................................................... 14
SECTION 5 - EXAMPLE APPLICATIONS ................................................................................. 15
5.1
Production Test Chromatogram .......................................................................................................................... 16
5.2
Inorganic Anions Including Chlorate and Chlorite ........................................................................................... 17
5.3
Resolution of Low-Concentration Analytes - EPA Water Matrix ................................................................... 18
5.4
Varying the Eluent System - 22 mM Borate ....................................................................................................... 19
5.5
Varying the Eluent System - 10 mM Borate with Column Purge .................................................................... 20
SECTION 6 - TROUBLESHOOTING GUIDE ............................................................................ 21
6.1
High Backpressure ................................................................................................................................................ 21
6.1.1 Finding the Source of High System Pressure .......................................................................................................... 21
6.1.2 Replacing Column Bed Support Assemblies .......................................................................................................... 21
6.2
High Background Or Noise .................................................................................................................................. 22
6.2.1 Preparation of Eluents ............................................................................................................................................. 22
6.2.2 Borate Eluent Precautions ....................................................................................................................................... 22
6.2.3 A Contaminated Guard or Analytical Column ........................................................................................................ 23
6.2.4 A Contaminated Anion Trap Column, ATC-3 ........................................................................................................ 23
6.2.5 Contaminated Hardware .......................................................................................................................................... 24
6.2.6 A Contaminated Anion Self-Regenerating Suppressor, ASRS-ULTRA ................................................................ 24
6.2.7 Contaminated Anion MicroMembrane Suppressor, AMMS III ............................................................................. 25
6.2.8 A Contaminated Anion Atlas Electrolytic Suppressor, AAES ............................................................................... 25
6.3
Loss of Front End Resolution ............................................................................................................................... 27
6.4
Poor Peak Resolution ............................................................................................................................................ 27
6.4.1 Loss of Column Efficiency ...................................................................................................................................... 27
6.4.2 Poor Resolution Due to Shortened Retention Times ............................................................................................... 27
6.5
Spurious Peaks ....................................................................................................................................................... 27
