Gas Chromatographic Retention Behavior of Polycyclic Aromatic Hydrocarbons (PAHs) and Alkyl- Substituted PAHs on Two Stationary Phases of Different Selectivity

Published

November 8, 2017

Author(s)

Federica Nalin, Lane C. Sander, Walter B. Wilson, Stephen A. Wise

Abstract

Retention indices (RIs) for 45 polycyclic aromatic hydrocarbons (PAHs) and 63 methyl- substituted PAHs were determined by gas chromatography – mass spectrometry (GC-MS) using two different stationary phases: a 50% (mole fraction) phenyl-substituted methylpolysiloxane and a 50% (mole fraction) liquid crystalline dimethylpolysiloxane. Retention data were obtained for parent PAHs from molecular mass (MM) 128 Da (naphthalene) to 328 Da (benzo[c]picene) and for 12 sets of methyl-PAHs (methylfluorenes, methylanthracenes, methylphenanthrenes, methylfluoranthenes, methylpyrenes, methylbenz[a]anthracenes, methylbenzo[c]phenanthrenes, methylchrysenes, methyltriphenylenes, methylbenzo[a]pyrenes, methylperylenes, and methylpicenes). Molecular shape descriptors such as length-to-breath ratio (L/B) and thickness (T) were determined for all the PAHs studied. Correlation between RIs and L/B ratio was evaluated for both stationary phases with a better correlation observed for the 50% liquid crystalline phase (correlation coefficients ranging from 0.22 to 1.00).

Citation

Analytical and Bioanalytical Chemistry

Pub Type

Journals

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Keywords

Polycyclic aromatic hydrocarbons (PAHs), Methyl-substituted polycyclic aromatic hydrocarbons (Methyl-PAHs), retention indices, gas chromatography, stationary phases, shape selectivity.

Citation

Nalin, F. , Sander, L. , Wilson, W. and Wise, S. (2017), Gas Chromatographic Retention Behavior of Polycyclic Aromatic Hydrocarbons (PAHs) and Alkyl- Substituted PAHs on Two Stationary Phases of Different Selectivity, Analytical and Bioanalytical Chemistry, [online], https://doi.org/10.1007/s00216-017-0700-4 (Accessed October 8, 2024)