Meaning
Spectroscopic analytical instrumentation utilizing high-temperature argon plasma excites elemental atoms to measure trace metal concentrations in dissolved polymer samples. Chemical testing via icp oes quantifies heavy metal additives, catalyst residues and inorganic fillers such as titanium dioxide and calcium carbonate down to parts-per-million levels. Resin compounders digest plastic samples in hot concentrated acids before nebulizing the liquid matrix into the plasma torch.
High accuracy elemental profiling verifies compliance with RoHS directives and packaging heavy metal limits.
High-energy Plasma
Ionization of vaporized liquid samples causes elements to emit characteristic light wavelengths under high temperatures. Operating icp oes equipment enables analytical chemists to simultaneously quantify multi-element profiles in complex polymer matrices. Emission intensity directly correlates with elemental concentration against prepared calibration standards.
Sub-ppm detection capabilities identify trace lead and cadmium contaminants in recycled plastic streams.
Quality Assurance
Testing laboratories rely on elemental profiling to verify raw additive loading and masterbatch dispersion quality. Testing resin lots with icp oes confirms correct concentrations of inorganic flame retardants and pigments. Process engineers adjust feeder rates when mineral filler loading deviates from target formulation limits.
Quantitative trace metal analysis prevents off-spec resin lots from reaching injection moulding lines.
Environmental Screening
Environmental regulations strictly limit concentrations of toxic heavy metals in plastic packaging and electronic housings. Utilizing icp oes provides definitive proof that plastic parts comply with global restricted substance lists. Failure to detect heavy metal contamination leads to product recalls and custom hold actions.
Certified analytical reports validate resin compliance across international trade routes.
