Grob Mix GC-FID Replicate Injections for Atmospheric Pressure Peak Area Correction (APPAC) and Integration Benchmarking

GC-FID replicate injection dataset of a Grob mix standard at eight concentration levels (5–1000 µg/mL) in methanol, acquired over five months (April–August 2022) on an Agilent 6890N gas chromatograph. Designed to study systematic baseline artifacts, dilution errors, and integration reproducibility. Each run includes the raw FID signal (Agilent .ch format) and ChemStation integration results. 2693 injections total, two replicates per level per session.