title: Electron ionization mass spectra and their reproducibility for trialkylsilylated derivatives of organic acids, sugars and alcohols.
abstract: Mass spectra of trialkylsilyl derivatives of fatty acids, dicarboxylic acids, hydroxyacids, oxoacids, sugars, amino acids and alcohols were obtained. Amino acids were analyzed as tert-butyldimethylsilyl derivatives; all other model compounds were analyzed as trimethylsilyl derivatives. Reproducibility of the electron ionization (EI) mass spectra for the derivatives obtained was discussed. It was shown that, for many investigated derivatives, composition of the respective mass spectra depended greatly on ion source contamination. The trimethylsilylated alpha-tocopherol mass spectrum composition was most significantly influenced by ion source contamination. This compound can be used to test ion source contamination.
authors: Chemistry Department, Chair of Analytical Chemistry, Moscow State University, Leninskie Gory 1, bld. 2, 119992 GSP-2 Moscow, Russian Federation. sobolevsky@environment.chem.msu.ru
authors: Tim G
authors: TG
authors: Sobolevsky
authors: Elena S
authors: ES
authors: Chernetsova
authors: Alexander I
authors: AI
authors: Revelsky
authors: Igor A
authors: IA
authors: Revelsky
authors: Alexander B
authors: AB
authors: Starostin
authors: Barbara
authors: B
authors: Miller
authors: Vincent
authors: V
authors: Oriedo
mesh_terms: D000438:Alcohols / Q000032:analysis / Q000737:chemistry*; D002241:Carbohydrates / Q000032:analysis / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation / Q000379:methods*; D014297:Trimethylsilyl Compounds / Q000737:chemistry*
chemical_list: D000438:Alcohols; D002241:Carbohydrates; D005227:Fatty Acids; D014297:Trimethylsilyl Compounds