Toward the accurate analysis of C1-C4 polycyclic aromatic sulfur heterocycles

Analytical Chemistry
Christian ZeiglerAlbert Robbat

Abstract

Polycyclic aromatic sulfur heterocycles (PASH) are sulfur analogues of polycyclic aromatic hydrocarbons (PAH). Alkylated PAH attract much attention as carcinogens, mutagens, and as diagnostics for environmental forensics. PASH, in contrast, are mostly ignored in the same studies due to the conspicuous absence of gas chromatography/mass spectrometry (GC/MS) retention times and fragmentation patterns. To obtain these data, eight coal tar and crude oils were analyzed by automated sequential GC-GC. Sample components separated based on their interactions with two different stationary phases. Newly developed algorithms deconvolved combinatorially selected ions to identify and quantify PASH in these samples. Simultaneous detection by MS and pulsed flame photometric detectors (PFPD) provided additional selectivity to differentiate PASH from PAH when coelution occurred. A comprehensive library of spectra and retention indices is reported for the C(1)-C(4) two-, three-, and four-ring PASH. Results demonstrate the importance of using multiple fragmentation patterns per homologue (MFPPH) compared to selected ion monitoring (SIM) or extraction (SIE) to identify isomers. Since SIM/SIE analyses dramatically overestimate homologue concentratio...Continue Reading

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Citations

Jan 30, 2016·Polycyclic Aromatic Compounds·Jan T Andersson, Christine Achten
May 17, 2014·Chemical Communications : Chem Comm·Sung-Tong Chin, Philip J Marriott
Jun 24, 2021·Journal of Chromatography. a·Ifeoluwa G IdowuGregg T Tomy
Apr 30, 2017·Environmental Science & Technology·Carlos A ManzanoYifeng Zhang

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