Meaning
Analytical characterization involves bombarding gas phase molecules with a beam of high energy electrons. Laboratory use of electron ionization 70 ev creates reproducible fragmentation patterns for unknown substances. This energy level is the industry standard for comparison against digital spectral libraries.
Fragment Pattern
High energy collisions break molecular bonds in a consistent manner to produce a unique fingerprint. During electron ionization 70 ev the resulting ions are separated by their mass to charge ratio. This distribution reveals the structure of additives or contaminants in a polymer sample.
Ionization Energy
Choosing a specific potential ensures that the fragmentation is extensive enough for identification but not so destructive that the signal is lost. While other levels exist electron ionization 70 ev provides the most comprehensive data for routine screening. The potential of seventy electron volts is sufficient to ionize almost all organic molecules.
Analysis Repeatability
Consistency across different instruments allows for the global exchange of analytical data. Relying on electron ionization 70 ev ensures that a result obtained in one facility can be verified by another. This standardization is vital for monitoring the migration of substances from food packaging.
Quality control teams use these spectra to confirm that the resin contains only approved antioxidants and light stabilizers. The technique identifies trace impurities that could affect the taste or odor of the packaged product.
