Why do you degas the eluent in IC?

Degassing the eluent in ion chromatography (IC) is essential to remove dissolved gases, such as carbon dioxide and oxygen, which can interfere with the separation process and lead to baseline noise or drift. This ensures a stable and reproducible baseline in the chromatogram, enhancing the accuracy of the measurements. Additionally, degassed eluents can improve peak resolution and minimize bubble formation in the system, which can disrupt flow and affect detector response. Overall, degassing contributes to more reliable and precise analytical results.