Gas chromatography

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GC Analysis of Spearmint Essential Oil on SLB®-IL59

-Cymene; Linalool; Menthol; α-Terpineol; Menthyl acetate

GC Analysis of Permanent Gases and Light Hydrocarbons on Carboxen-1006 PLOT and a Packed Column (Carboxen® 1004)

Separation of Methane; Acetylene; Carbon monoxide; Water; Nitrogen; Carbon dioxide; Ethane; Ethylene

Principal Component Analysis (PCA) Evaluation of Seven Commercial Ionic Liquid Capillary GC Columns

In order to cover a broad range of possible solute-stationary phase interactions, 95 solutes with varied functional groups were selected to perform stationary phase characterization.

GC Analysis of Class 3 Residual Solvents on OVI-G43

Butyl methyl ether; Acetic acid; 2-Butanone; Ethyl acetate; Tetrahydrofuran; 1-Butanol; Isopropyl acetate; Heptane; Propyl acetate; 3-Methylbutanol; 4-Methyl-2-pentanone; Isobutyl acetate; Butyl acetate; Dimethyl sulfoxide; Anisole; Cumene

GC Analysis of Neroli Essential Oil on SLB®-5ms

SPME Fiber Performance Tips for Volatiles & Semi-Volatiles

Enhance the extraction capability of Supelco SPME fibers for the collection of volatiles, semi-volatiles and polar compounds. spme

Resolves Difficult Sample Matrix Problems

In the flavor and fragrance industry, analytical chemists are often required to isolate key ingredients, off-flavor components, or trace organic compounds from their sample matrices without altering their structure or composition.

SupraSolv® GC Solvent Specifications

Our GC solvents have been specially developed and tested for ECD, FID and MS detection or for headspace gas chromatography to ensure accurate, reliable and reproducible analytical results.

GC Analysis of C2-C22 Free Fatty Acids on Nukol™

Separation of Methyl oleate; Caprylic acid; Heptanoic acid; Methyl decanoate; Methyl dodecanoate; Myristic acid; Methyl palmitate; Methyl palmitoleate; Methyl stearate; Methyl linoleate; Methyl linolenate; Acetic acid; Arachidic acid; Behenic acid; Propionic acid; Isobutyric acid; Valeric acid; Isovaleric acid; Isocaproic acid;

The Effect of Container Materials on Production of Light Induced Off-Flavors in Milk – A Study Using SPME-GC-MS

Various plastics used as barriers to the production of off-flavors in light exposed milk were examined using HS-SPME with a new Carboxen®/PDMS coated Nitinol fiber followed by GC-MS analysis allowing detection of low MW analytes at levels <1 ng/mL.

HPLC Analysis of Active Cannabinoid Compounds in Gummy Bear Candy on Ascentis® Express Biphenyl with UV Detection after Extraction

Tetrahydrocannabinolic acid A solution, 1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material.

SPME in the Analysis of Illicit Drugs

SPME is used in the analysis of amphetamine compounds by doing pre-extraction derivatization, and is also used in general determinations of other drugs of abuse.

Radiello Diffusive Sampler for Monitoring 1,3-Butadiene and Isoprene in Workplace Air

The manufacturing of elastomers makes wide use of 1,3-butadiene (CAS No. 106-99-0) and isoprene (2-methyl- 1,3-butadiene, CAS No. 78-79-5). Both compounds are classifi ed as carcinogenic by the International Agency for Research on Cancer (IARC). 1,3-Butadiene is currently listed in

Biodiesel

Learn more about Biodiesel as a renewable, alternative diesel fuel produced from vegetable oils, animal fats, or recycled restaurant grease.

Gas Chromatography (GC) Column Selection Guide

Learn to select the proper capillary column based on stationary phase, column I.D., film thickness, and column length.

The Use of Derivatization Reagents for Gas Chromatography (GC)

Derivatization is a technique that usually involves a reaction of the analyte(s) of interest with a particular derivatization reagent.

Complete Workflow for the Analysis of California List of Pesticides in Cannabis by LC-MS/MS and GC-MS/MS

To show product safety, it is mandatory to test cannabis flowers for the presence of pesticides. In this article, we show a complete workflow for sample preparation and analysis of cannabis for the pesticides registered in California, by LC-MS/MS and

US EPA Method 8041: GC Analysis of Phenols on Equity®-5

Separation of multiple phenolic compounds using chromatography for analytical purposes, ensuring accurate identification and quantification.

Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS

Resolving by Mass

GC Injection Port Issues: Two Case Studies (Peak Tailing and Low Response)

Proper product selection and preventative maintenance for the GC inlet are vital elements that impact performance of the GC instrument.

Melamine Analysis via GC-MS

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)

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