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High‐performance thin‐layer chromatography with atmospheric solids analysis probe mass spectrometry for analysis of gasoline polymeric additives
Author(s) -
Beaumesnil Mathieu,
Mendes Siqueira Anna Luiza,
HubertRoux Marie,
LoutelierBourhis Corinne,
Afonso Carlos,
Racaud Amandine,
Bai Yang
Publication year - 2020
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.8755
Subject(s) - chemistry , chromatography , mass spectrometry , analytical chemistry (journal) , silica gel , analyte
Rationale The offline coupling of high‐performance thin‐layer chromatography (HPTLC) with atmospheric solids analysis probe mass spectrometry (ASAP‐MS) was evaluated for the characterization of polymeric additives in gasoline. Methods A protocol was developed to optimize the ion signal. A glass capillary was moistened with deionized water, and then dipped into silica gel scratched from an HPTLC plate. The capillary tube was fixed to the ASAP holder and introduced into the ionization source for analysis by MS. Silica gel, reversed‐phase C18 and cellulose stationary phases were evaluated. Results The effect of the stationary phase and the nature of analyte were evaluated using polypropylene glycol and polyisobutylene succinimide polyamine as analyte molecules. The optimal ionization conditions are significantly different between ASAP and HPTLC/ASAP‐MS analyses. In particular, a higher desorption gas temperature was required to produce ions from the silica gel HPTLC plate. The presence of the stationary phase reduces the internal energy of the ions and limits the fragmentation. Conclusions HPTLC/ASAP‐MS is a very fast and efficient technique for the analysis of polymers in formulated fuels. Good ionization efficiency was obtained with all investigated stationary phases.