Processor groups extracted ion chromatogram peaks by retention time to isolate product ion signals for mass spectrometry analysis.
An intermediary swab extracts lead particles from oral fluid, resolving the trade-off between blood test precision and patient compliance.
Selective ion fragmentation isolates intact mass labels from co-eluting contaminants to resolve interference and improve quantification accuracy.
A data processing system calculates a sensitivity factor to create a corrected mass chromatogram from target peak intensities.
Multi-frequency voltages create and redistribute a bipolar ion cloud via polarizing fields, extending neutralization range without gas streams.
Segmented waveform analysis excludes high-value segments to isolate noise components, resolving the trade-off between estimation simplicity and accuracy.
A mass spectrometer ionization interface applies one high-voltage signal to both electrostatic spray and corona discharger, reducing circuit complexity.
Segmented pressure-flow reducers decouple atmospheric sampling from vacuum focusing, increasing particle transmission efficiency by 20-fold.
Gas chromatography cleans complex matrices, preventing competitive ionization and boosting IMS sensitivity.
A control system compares sample mass spectra against reference libraries and combines similarity indexes to categorize samples.
Zirconia toughened alumina maintains electrical insulation at 350°C, preventing breakdown in mass spectrometers.
A principal component analysis and variable grouping method processes spectrometry data to identify correlated variable groups.
A protective diaphragm with a central aperture shields projection systems from scattered particles in charged-particle exposure apparatus.
Precise background subtraction in complex samples uses defined chromatographic fluctuation time and mass precision windows to remove chemical interference.
Sealed vessels with 13C-labeled standards eliminate hydrogen-deuterium exchange and elution time shifts, ensuring accurate quantification.
Remote imaging systems use grazing angle light beams to resolve low concentration samples on textured surfaces without increasing device complexity.