Avoiding Split Peaks in Gas Chromatography for QuEChERS Extracts in Acetonitrile

Acetonitrile injections don’t damage Rxi-5Sil MS GC columns. But urban legends persist, so analysts sometimes do unnecessary and laborious solvent exchanges for QuEChERS extracts. A real problem that might warrant solvent exchange is mismatch between the polar solvent acetonitrile and…