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Polycyclic aromatic hydrocarbons (PAHs) were analyzed as adsorbates on borosilicate glass at levels from 40pg (5.5pgmm -2 ) to 7μg (1μgmm -2 ) using laser desorption-ionization (LDI) in air at ambient pressure and 100 o C with ion characterization by mobility spectrometry. Gas-phase positive ions with distinctive mobilities were produced from six PAHs using an unfocused...
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