Meaning
High-resolution analytical testing of polymer extracts identifies unknown chemical compounds that migrate from plastic packaging. Utilizing gc-qtof-ms screening allows laboratories to detect and identify non-intentionally added substances like degradation products or trace contaminants. This method combines chromatographic separation with accurate mass measurements to pinpoint the chemical formula of each migrant.
Identification Power
Determining the origin of off-odors or potential toxins in molded parts requires a technique that can identify compounds without reference standards. The gc-qtof-ms screening process achieves this by comparing mass spectra against extensive libraries and calculating the isotopic patterns of the detected ions. This capability helps quality control teams trace the source of contaminants to specific raw materials, regrind batches, or process lubricants.
Identifying these compounds early prevents full-scale production runs from using contaminated resins, saving thousands of dollars in wasted material and downtime.
Process Application
Resin compounders use this advanced analysis to screen incoming additives and masterbatches for purity. Running gc-qtof-ms screening on raw materials ensures that no unexpected reaction byproducts are introduced into the compounding extruder, where heat could generate further impurities. The high sensitivity of the instrumentation allows the detection of volatile and semi-volatile substances at concentrations below parts per billion.
Compliance Value
Regulatory clearance for high-purity applications like medical devices or infant feeding bottles depends on proving the absence of harmful migrants. Using gc-qtof-ms screening provides the detailed chemical profiles necessary to complete toxicological risk assessments for food-contact plastics. This documentation protects brand owners from product liability claims and ensures that all components comply with international chemical safety laws.
