The third installment in a four-part series on chemical noise in mass spectrometry discusses examples of chemical ionization and fast atom bombardment in conjunction with MS/MS.

Spectroscopy?s annual overview presents new instrumentation that was introduced at the Pittsburgh Conference and Exposition on Analytical Chemistry and Applied Spectroscopy (PittCon), held this year March 10?13 in Orlando, Florida.

Often, mass spectra of compounds found in water supplies are not found in mass spectral libraries. Ion composition elucidation (ICE) provides the elemental compositions of the ions observed in their mass spectra. This information is used to identify the compounds.