title: First-order derivative resolution of overlapped PAH peaks with common mass spectra in gas chromatography-mass spectrometry.
abstract: First-order derivative of 15 points smoothed chromatograms of mixtures of benzo(b)fluoranthene (BbF) and benzo(k)fluoranthene (BkF) for the m/z 252 ion obtained using two microscans has been proposed as a simple alternative to the resolution of overlapped chromatographic peaks of these two compounds which have identical mass spectra. The procedure provides limits of detection of 12 and 29ngg(-1) for BbF and BkF, respectively and offers the possibility to use the 250 and 248 ions to confirm the identity of these analytes.
authors: Institute for Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9-164, A-1060 Vienna, Austria. guiquin@alumni.uv.es
authors: Guillermo
authors: G
authors: Quintás
authors: Bernhard
authors: B
authors: Lendl
authors: Agustín
authors: A
authors: Pastor
authors: Miguel
authors: M
authors: de la Guardia