All News

Reversed-phase separation of antidepressants on new C18 and C8 silica-based HPLC columns. (Dionex Corporation)

Two reversed-phase separations of EDTA in a hydrocortisone cream and a nasal spray. (Hamilton Company)

Analysis and purification of chiral compounds using SFC with a laser polarimeter detector. (Regis Technologies Inc.)

GC analysis of essential oils. (SGE, Incorporated)

Comparison of evaporative light-scattering detection and UV-absorbance detection in the HPLC analysis of succinic acid. (Polymer Laboratories, Inc.)

Analysis of heparin using SEC with triple-angle light scattering detection. (Wyatt Technology Corporation)

Description of a non-liquid-filled light-guiding capillary with a polyimide coating. (Polymicro Technologies, LLC)

Fast nitrosamine analysis using a zirconia-based HPLC stationary phase. (ZirChrom Separations, Inc.)

GC analysis of branched alcohols. (SGE, Incorporated)

Continued from last month, this month's column discusses specially designed columns for use in highly aqueous environments. Many of these columns also can be used as regular reversed-phase columns for a range of mobile phases.

Dolan discusses some of the challenges of separating small peaks from large ones and gives some pointers on how to obtain a separation.

Solid-phase extraction of acidic, basic, and neutral pharmaceutical compounds. (Phenomenex Inc.)

Chiral separation of drug enantiomers. (Chiral Technologies, Inc.)

Polymer analysis using HPLC with evaporative light-scattering detection. (Polymer Laboratories, Inc.)

Solid-phase extraction of basic drugs. (Argonaut Technologies)

Use of an SPE-based kit for amino acid sample preparation before GC analysis. (Phenomenex Inc.)

GC analysis of an industrial solvent mixture. (SGE, Incorporated)

Analysis of gelatins using SEC with multiangle light-scattering detection. (Wyatt Technology Corporation)

Reversed-phase LC analysis of nucleotides. (Thermo Hypersil-Keystone)

HPLC separation of herbicide enantiomers. (Regis Technologies, Inc.)

Reversed-phase LC analysis of sulfate–steroid conjugates. (ZirChrom Separations, Inc.)

Description of GC analysis with selected-ion monitoring MS detection and retention-time locking. (Agilent Technologies)

Polymer analysis using GC–MS and LC–MS. (Impact Analytical)

SPE and LC–MS analysis of terfenadine. (Waters Corp.)

Analysis of orange juice using HPLC with evaporative light-scattering detection. (Alltech Associates, Inc.)

HPLC analysis of proteins and peptides. (Phenomenex Inc.)

Synthetic fused-silica capillary tubing with light-guiding properties. (Polymicro Technologies, LLC)

SPE preparation of biological samples for LC–MS analysis. (Spark Holland B.V.)