Meaning
Efficiency value measures the proportion of molecules that are successfully converted into ions for detection during a chemical analysis. A high mass spectrometry ionization yield is necessary for the sensitive detection of trace additives and contaminants in polymer samples. If a substance does not ionize well, it may remain invisible to the detector even if it is present in the plastic at high levels.
Detection Sensitivity
Factors such as the chemical structure of the migrant and the settings of the ion source influence the outcome. In mass spectrometry ionization yield studies, researchers often find that polar molecules are much easier to detect than non-polar ones like waxes or simple hydrocarbons. Adjusting the chemistry of the mobile phase in the chromatograph can sometimes improve the yield for difficult substances.
Matrix Suppression
Presence of other chemicals in the polymer extract can interfere with the ionization process and lower the signal. This effect, known as quenching, makes the mass spectrometry ionization yield unpredictable when analyzing complex materials like recycled plastics. Careful sample preparation and the use of internal standards are required to compensate for these variations.
Quantification Accuracy
Understanding the yield for each target compound is essential for converting the detector signal into a concentration.
