Unique thermospray mass spectrometry of 1,4-benzoquinone and analogs in ammonium acetate solutions

✍ Scribed by T. A. Gctek; M. L. Vestal; C. H. Vestal; W. A. Korfmacher; D. W. Miller; J. P. Freeman

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 498 KB
• Volume: 26
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210260806

✦ Synopsis

In general, iom corresponding to [ M + HI+ and/or IM + NH,] + are observed in thermospray mass spectrometry (TSMS) when using ammonium acetate in the liquid carrier. For several quinones investigated, unique thermospray mass spectra were detected with a mass spectral peak corresponding to an I M + 161 + ion being observed in aqueous ammonium acetate solutions. Investigation of 1,dbenzoquinone (BQU) and structurally analogous quinones indicated that amhe conjugate formation with BQU and similar quinones was the on'gin of the unique IM + 161+ ion in E M S . When methanol was added to the liquid carrier, ions corresponding to methoxy conjugation were detected. Higb-performance liquid chromatography followed by TSMS or electrochemical detection gave evidence that this amiw and methoxy conjugate formation was occurring in the thermospray source area.