有机酸采用高效液相色谱-同位素比率质谱联用技术(HPLC-IRMS)结合有机酸专用柱Prevail Organic Acid测定食醋中有机酸的碳同位素比.同时,HPLC-IRMS测定食醋有机酸,有效的前处理净化过程可减缓液相色谱测试过程中在线过滤系统中的滤膜堵塞的情况.结果表明,不同产地食醋的乳酸和苹果酸的δ13C值具有显著性差异,能为产地...
Isotopic analysis of sweet wine main components was performed by HPLC-co-IRMS. For the majority of the wines under study, 未~(13)C values of glucose, fructose, glycerol and ethanol were determined in a single run. These 未~(13)C isotope ratios are variable form one sample to another ...
GUYON F,GAILLARD L,SALAGOTY M H,et al.Intrinsic ratios of glucose,fructose,glycerol and ethanol13C/12C isotopic ratio determined by HPLC-co-IRMS:toward determining constants for wine authentication[J].Analytical and bioanalytical chemistry,2011,401(5):1551-1558....
Isotope ratio mass spectrometry (IRMS)HPLC sample preparationNandrolone and/or its precursors are included in the World Anti-doping Agency (WADA) list of forbidden substances and methods and as such their use is banned in sport. 19-Norandrosterone (19-NA) the main metabolite of these compounds ...
X.ColamoniciC.CurcioD.MolaioniF.PizzardiM.STEROIDS -SAN FRANCISCO THEN STONEHAM THEN NEW YORK-de la Torre X, Colamonici C, Curcio D, Molaioni F, Pizzardi M, Botre F (2011) A simplified procedure for GC/C/IRMS analysis of underivatized 19-norandrosterone in urine following HPLC purifi-...
Dugo G, Bonaccorsi I, Sciarrone D, Schipilliti L, Russo M, Cotroneo A, Dugo P, Mondello L & Raymo V (2012) Characterization of cold-pressed and processed bergamot oils by using GC-FID, GC-MS, GC-C-IRMS, enantio-GC, MDGC, HPLC and HPLC-MS-IT-TOF. The Journal of Essential Oil ...
The presence of herniarin is confirmed in genuine samples through high-pressure liquid-chromatographymass spectrometryion traptime of flight (HPLC-MS-IT-TOF). The isotopic ratios herein reported, for all the samples analyzed, represent a useful tool for the evaluation of genuineness of cold-pressed...
The data from light stable isotope ratio mass spectrometry (IRMS), ultra-high performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLC-HRMS), and nuclear magnetic resonance (NMR) analysis methods were used in combination with multivariate analysis to characterize honey ...