Las columnas Supelcosil® ABZ+ Plus ofrecen elevada desactivación y selectividad única. Las partículas de sílice desactivadas con una distribución granulométrica muy estrecha aseguran una elevada eficiencia a baja contrapresión. Después de las reacciones de enlace y "fijación de grupos residuales" ("endcapping"), la fase ABZ+ Plus protege de forma efectiva los grupos silanol que no han reaccionado con la sílice, impidiendo que interaccionen con la mayor parte de los analitos, y proporciona picos simétricos independientemente de la funcionalidad del analito. Esta fase también le permite usar tampones de menor fuerza iónica sin necesidad de añadir un modificador de amina.
Características y beneficios
• Elevada eficacia para analitos polares, no polares y con carga • Picos simétricos para los compuestos más reactivos • Selectividad extraordinaria para compuestos polares y con carga.
Productos recomendados
Discover LiChropur reagents ideal for HPLC or LC-MS analysis
Información legal
SUPELCOSIL is a trademark of Sigma-Aldrich Co. LLC
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 810(1), 77-83 (2004-09-11)
Liquid chromatography with a column-switching technique was developed for simultaneous direct quantification of levofloxacin, gatifloxacin and moxifloxacin in human serum. Serum samples were injected on a LiChroCART 4-4 pre-column (PC) filled with a LiChrospher 100 RP-18, 5 microm where fluoroquinolones
Journal of pharmaceutical and biomedical analysis, 37(4), 757-762 (2005-03-31)
A highly sensitive method was developed and validated for determining the free fraction of flunarizine in human plasma. Equilibrium dialysis was used for the separation of free (unbound) drug and liquid chromatography/tandem mass spectrometry (LC-MS/MS) was used for quantitation. Post-dialysis
Absorption, distribution, metabolism, and excretion (ADME) properties are of invaluable importance to a bioactive compound. Permeation process is one of the most widely studied by many different techniques. Among them, reversed-phase liquid chromatography (RP-LC) is proving to be of great
Rapid communications in mass spectrometry : RCM, 23(18), 2885-2890 (2009-08-12)
F2-isoprostanes are a family of prostaglandin F2-like compounds that are formed by free-radical-catalyzed peroxidation of arachidonic acid. Several F2-isoprostanes, but in particular 8-epi PGF(2alpha), are widely used as oxidative stress biomarkers. An analytical method based on liquid chromatography with negative
Journal of chromatography. A, 855(1), 191-202 (1999-10-09)
A qualitative determination of 20 underivatized proteinic amino acids by LC-MS is reported. The need for chromatographic separation before mass spectrometry determination is demonstrated based on the study of several amino acid pairs which have some similar characteristics. Two suitable
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