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Sigma-Aldrich presents an article about the analysis of melamine and related compounds in dog food with the use of more economical gas chromatography-mass spectrometry (GC-MS) instrumentation.

Separation of Alcohols and Esters in Spirits using Serially Connected GC Columns

The Best Approaches to Gas Purification

The Derivatization and Analysis of Amino Acids by GC-MS

Proline Derivatization and Enantioresolution by Chiral GC

Amino acids are building blocks of peptides and proteins. Enantiomeric separation of these molecules can be performed through chromatography by chiral stationary phases. This article describes the chiral GC analysis of one amino acid, proline, after achiral derivatization.

GC Injection Port Septa: Use, Maintenance, Storage and Handling

Proper handling and preventative maintenance instructions for injection port septa; tips to improve the performance of gas chromatography instruments.

Measuring Flows For Gas Chromatography Volumetric vs. Mass

Hopane Reference Standards for use as Petrochemical Biomarkers in Oil Field Remediation and Spill Analysis

We provide high-quality, relevant hopane reference standards to be used as biomarkers for petrochemical oil field remediation and spill analysis.

New cis/trans FAME Standard for Optimising GC System Performance

AOCS and AOAC methods for determining the trans fatty acid composition of foods by gas chromatography require the use of a highly polar cyanosilicone capillary column to provide the best peak resolution attainable of the numerous geometric (cis & trans)

GC Analysis of a 37-Component FAME Mix on Omegawax®

This technical article will discuss GC Analysis of a 37-Component FAME Mix on Omegawax.

Petroleum Hydrocarbon Standards for SIMDIS Analyses

Understanding the boiling point range distribution of petrochemical products is critical for selection of the proper method to process feed stocks, for process control, for contaminant identification and for development of new test methods.

Selecting the Appropriate SPME Fiber Coating –Effect of Analyte Molecular Weight and Polarity

Exactly Why is Low Bleed Important for Capillary Columns?

GC/MS/MS Analysis of Bisphenol A (BPA) in a Fruit Flavored Energy Drink on the SLB-PAHms Column After SPME Using an Overcoated SPME Fiber

Bisphenol A (BPA) plastic is controversial in food and beverage containers. This study demonstrates SPME of BPA from an energy drink using an overcoated PDMS/DVB fiber, followed by GC/MS/MS analysis using SLB-PAHms GC Column.

Solid Phase Microextraction: Frequently Asked Questions

Answers and tips relating to the application of the solid phase micro-extraction technique.

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with Dual-Layer SPE Cartridge

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Validation of a Simple Method for the Alcohol Content in Kombucha Tea by Headspace SPME and GC-MS

Development and validation of a headspace SPME and GC-MS method to determine alcohol content in twenty different Kombucha tea samples.

Determination of 2-Chloroethanol as Marker for Fumigant Ethylene Oxide in Sesame Seeds by HS-SPME-GC-MS

The work describes the development of an HS-SPME-GC-MS method to determine 2-chloroethanol as a marker of fumigant ethylene oxide in different kinds of sesame seed samples.

Gas chromatography