Emilia Marchei et al.
Journal of pharmaceutical and biomedical analysis, 41(4), 1468-1472 (2006-05-16)
A simple and rapid procedure based on gas chromatography-mass spectrometry (GC-MS) is described for determination of synephrine, active principle of Citrus aurantium plant, in solid and liquid dietary supplements. After the addition of 3,4-methylenedioxypropylamphetamine as internal standard (I.S.), a liquid-liquid...
Ralf Pätzold et al.
Chirality, 18(7), 551-557 (2006-05-10)
Synthetic dipeptides comprising mixtures of enantiomers, diastereomers, or sequential isomers were converted into their N-perfluoroacetyl dipeptide esters (perfluoroacetyl: trifluoroacetyl, pentafluoroacetyl, heptafluorobutyryl; ester: methyl, 1-propyl, 2-propyl, 2,2,2-trifluoroethyl) and analyzed by GC-MS on the chiral stationary phases Chirasil-L-Val and Lipodex-E using helium...
Comparison of RapiTest? with Emit? d, au? and GC-MS for the Analysis of Drugs in Urine.
Korte, T., et al.
Journal of Analytical Toxicology, 21, 49-53 (1997)
Y S Oh-Shin et al.
Journal of chromatography. A, 769(2), 285-291 (1997-05-09)
A rapid and simple gas chromatographic method for the simultaneous determination of malathion, parathion, fenitrothion, diazinon and carbaryl in drinking water is presented. A fused-silica SE-54 column was used for the separation of the insecticides and was split into two...
I Jakasa et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 811(2), 177-182 (2004-11-04)
We developed a sensitive method for determination of polyethylene glycols (PEGs) of different molecular weight (MW) in the human stratum corneum (SC) obtained by tape stripping. The analysis is based on derivatization with pentafluoropropionic anhydride (PFPA) and gas chromatography-electron capture...