Mineral Oil Findings in Recycled Fibre Food Packaging
Recycled paperboard packaging requires verified functional barriers and HPLC-GC-FID test dossiers to prevent gas-phase MOSH and MOAH food contamination.
MOSH MOAH HPLC-GC-FID
Hyphenated System
Analytical characterization of mineral oil residues requires the coupling of high performance liquid chromatography with gas chromatography and flame ionization detection. The mosh moah hplc-gc-fid method allows for the automated separation of saturated and aromatic hydrocarbons before they are quantified. This dual stage approach is the gold standard for detecting contamination in paper packaging and food.
It removes the need for manual cleanup steps that can introduce errors into the results.
Detector Quantification
Carbon atoms passing through a hydrogen flame create ions that are measured as an electrical current. In the mosh moah hplc-gc-fid setup, the flame ionization detector provides a signal that is proportional to the mass of the hydrocarbons in the sample. This universal response allows the laboratory to quantify the entire unresolved complex mixture without needing a separate calibration standard for every individual compound.
Data Interpretation
Results are typically reported as a total milligram per kilogram value for each of the two hydrocarbon fractions. Using mosh moah hplc-gc-fid, an analyst can see the distribution of different carbon chain lengths, which helps in identifying the source of the oil. A sharp peak might suggest a specific lubricant, while a broad hump often points toward recycled paper or newsprint inks.