Cation Analysis in the Presence of PEG (YS-50)
Waste water from electronic production factories may contain hydrophilic polymers. As a waste water model, sample containing mono- and di-valent cations in the presence of polyethylene glycol (PEG2000) was prepared. Ion chromatography (cation) column, IC
YS-50 was used under non-suppressor method. All cations analyzed showed good recovery without having any effect from polyethylene glycol. Some PEG2000 is adsorbed on the column, however this can be removed by adding 50% ACN in the eluent.
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Sample :10micro-L
Cation mixture in 5% PEG2000 solution
No. |
cation |
Recovery (%) |
| 1. |
Li+ 2mg/L |
106 |
| 2. |
Na+ 10mg/L |
104 |
| 3. |
NH4+ 10mg/L |
101 |
| 4. |
K+ 20mg/L |
101 |
| 5. |
Mg2+ 10mg/L |
99 |
| 6. |
Ca2+ 10mg/L |
97 |
Column : Shodex IC YS-50 (4.6mmID*125mm)
Eluent : 4mM Methanesulfonic acid aq.
Flow rate : 1.0mL/min
Detector : Non-suppressed conductivity
Column temp. : 40deg-C