Dicarboxylic acids analyzed by time-of-flight secondary ions mass spectrometry. Part VI: Oxanedioic acid

Abstract

Time-of-flight secondary ion mass spectrometry was carried out to analyze a commercially available octanedioic acid (suberic acid) powder. Positive and negative polarity ion spectra were obtained using a 25 keV Bi3+ ion beam rastered over areas of 50 × 50 μm2. The main observed fragments were the protonated molecule [M+H]+ at 105 Da and the deprotonated molecule [M-H]− at 103 Da with their respective oligomers.