Paperboard Hydrocarbon Extraction and LC-GC-FID Analysis Protocols
Paperboard LC-GC-FID testing requires ethanol swelling, mCPBA epoxidation, and accurate UCM baseline integration to verify MOSH and MOAH migration compliance.
Paperboard Extraction
Chemical Recovery
Analytical techniques designed to isolate soluble components from a fiber matrix are used to evaluate the safety and purity of materials. In the laboratory, paperboard extraction identifies the presence of residual chemicals such as adhesives, sizing agents or printing ink constituents. The procedure isolates these substances into a liquid medium for further quantification.
Solvent Interaction
Choice of solvent depends on the polarity of the target compounds and the intended end use of the packaging. When paperboard extraction is performed for food contact compliance, technicians often use food simulants like ethanol or vegetable oil to mimic the behavior of actual groceries. The material is soaked or agitated at specific temperatures to encourage the migration of molecules from the solid fibers into the liquid phase.
Polar solvents are effective for pulling out starches and surface treatments, while non-polar options target mineral oils and synthetic resins. Heating the mixture speeds up the process but must be controlled to prevent the degradation of the cellulose itself. The resulting liquid is then filtered and analyzed using chromatography to identify specific contaminants.
Precision here is mandatory.
Regulatory Compliance
Limits for migration are strictly defined by regional authorities to prevent the contamination of consumer products. Testing confirms that the concentrations of specific substances remain below the thresholds set by safety standards. Documentation of these results is a requirement for supplying the food industry.