Methane chemical ionization (CI)-selected ion monitoring (SIM) mass spectrometry was
used to identify and conclusively distinguish 19 organochlorine pesticides from …

The gas chromatograph-mass spectrometer (GC/MS) system has become a powerful tool for
analysis of trace organic contaminants in environmental samples, largely because of the …

GCMS techniques using chemical ionization have been em-ployed to characterize by
molecular weight composition, five FDA reference Aroclor standards. The results Indicated …

The responses of selected‐ion monitoring of electron impact mass spectra and selected‐
reagent‐ion chemical ionization mass spectra of polychlorinated biphenyls (PCBs), relative …

Performance characteristics were determined for an analytical method that Includes
automated Interpretation of mass spectra of polychlorinated biphenyls (PCBs) and 21 …

In time-programmed limited mass scan gas chromatography—mass spectrometry, discrete
portions of the mass range are selected to monitor the presence of characteristic groups of …

A quadrupole ion trap mass spectrometer coupled with a gas chromatograph was used to
study the reactions of two co-eluting polychlorinated biphenyl (PCB) compounds, congener …

Determination of polychlorinated biphenyls (PCBs) by level of chlorination provided
distinguishing characteristic features for nine Aroclor formulations that are available as …

The use of gas chromatography-mass spectrometry (GC-MS) with electron impact (EI) and
positive and negative chemical ionization (PCI and NCI, respectively) is a valuable …

Positive Ion chemical ionization GC/MS was evaluated for the quantitation of
polychloroblphenyls (PCBs) using 10 or less selected PCB standards. Positive Ion chemical …