Subscribe to Newsletter

Refine results:

Refine results

App Notes

Results 1361–1370 of 1444

The Use of Flow modulated GCxGC

| Contributed by jsb

The following article describes the use of flow modulated GCxGC for the routine analysis of TPHs in soils and waters.

The Four Best Ways to Extend GC Column Lifetime

| Contributed by Phenomenex

Non-volatiles and high molecular weight compounds can contaminate your GC column, causing performance degradation and poor column lifetime.

Leveraging Ultra-High Efficiency Kinetex® Core-Shell 5 μm Technology for Lab-Scale

| Contributed by Phenomenex

Kinetex 5 μm is the first and only core-shell media available for lab-scale preparative purification.

Analyzing Testosterone in Human Serum

| Contributed by Phenomenex

Testosterone is an androgenic steroid responsible for the development of male reproductive organs, maintaining (or increasing) muscle mass, and bone density.

Better Gel Filtration: A New Look at Method Development Parameters Using Yarra™ GFC Columns

| Contributed by Phenomenex

Yarra columns demonstrate significantly higher inertness to ionic interactions versus other GFC columns; however, such chemical characteristics require optimization to operating parameters. In particular, salt and buffer concentration can have a significant impact on secondary interactions which can influence GFC separations.

Enantioseparation of N-FMOC a-Amino Acids Using Lux® Chiral Stationary Phases in Reversed Phase

| Contributed by Phenomenex

In this technical note, we report the baseline resolved chiral separation of the most common 19 FMOC protected a-amino acids derivatives under reversed phase separation mode using five unique Lux polysaccharide-based chiral stationary phases.

Effective Sample Preparation and Rapid LC/MS/MS Analysis of a Large Pain Panel Screen

| Contributed by Phenomenex

41 pain management drugs from several drug classifications were isolated from urine samples using the specialized Strata-X-Drug B SPE sorbent and analyzed by LC/MS/MS in under 5 minutes using a Kinetex Core-Shell Technology HPLC/UHPLC column.

Separation of Isomers of Vitamin K1 Using Normal Phase HPLC

| Contributed by Thermo Fisher Scientific

Vitamin K1 isomers and related compounds are separated using a silica HPLC column and a normal phase solvent system.

Determination of 24 Pesticide Residues in Red Wine Using a QuEChERS Sample Preparation Approach and LC-MS/MS Detection

| Contributed by Thermo Fisher Scientific

This application presents a fast, easy, and cost-effective method for the determination of 24 pesticide residues in red wine.

Pellicular Anion-Exchange Oligonucleotide Chromatography Coupled with High-Resolution Accurate Mass (HRAM) Mass Spectrometry

| Contributed by Thermo Fisher Scientific

To couple high-resolution pellicular anion-exchange liquid chromatography (pAXLC) of oligonucleotides with HRAM mass spectrometry (MS) and automated desalting to identify impurities and isomeric variants in synthetic oligonucleotides

Register to The Analytical Scientist

Register to access our FREE online portfolio, request the magazine in print and manage your preferences.

You will benefit from:
  • Unlimited access to ALL articles
  • News, interviews & opinions from leading industry experts
  • Receive print (and PDF) copies of The Analytical Scientist magazine

Register