Photoinitiator Migration Limits in Food Contact Print Finishes
Photoinitiator migration limits demand complete photopolymer conversion or functional containment to keep extractable residues below 10 parts per billion.
GC-MS MS Quantification
Chemical Analysis
Highly sensitive measurement of volatile and semi-volatile organic contaminants in paperboard packaging utilizes tandem mass spectrometry coupled with gas chromatography. Through gc-ms ms quantification, laboratories identify and measure trace amounts of mineral oils and plasticizers. This analytical technique separates complex mixtures before fragmenting the molecules for precise detection.
It represents the standard for tracking migration risks.
Analytical Sensitivity
Tandem mass spectrometry operates by isolating a specific precursor ion and fragmenting it further to detect unique product ions, which eliminates background noise. This high selectivity allows analysts to measure contaminants even when they are present in complex paperboard matrices. Standard chromatography columns separate the substances by boiling point and polarity.
The resulting chromatograms provide clear peaks that correspond to the concentration of each compound.
Packaging Compliance
Application of this quantification technique is standard practice when testing recycled paperboard for food contact suitability. Since recycled fibers can contain residues from previous uses, converters must prove that these substances do not migrate into food above permitted limits. By using this tandem method, laboratories can detect contaminants at parts-per-billion levels, which ensures that even trace amounts are identified.
This precision allows packaging manufacturers to verify the performance of functional barrier layers. This testing provides the scientific data required to sign compliance declarations for demanding food brands.