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Achieve Exceptional Resolution of PAHs, Including Several Isomer Sets Using SLB®-ILPAH Capillary GC Columns
SLB®-ILPAH is a special purpose column based on an ionic liquid stationary phase providing unique selectivity and efficient column dimensions allowing exceptional resolution of PAHs
Exactly Why is Low Bleed Important for Capillary Columns?
Exactly Why is Low Bleed Important for Capillary Columns?
The Derivatization and Analysis of Amino Acids by GC-MS
The Derivatization and Analysis of Amino Acids by GC-MS
Parabens in Topical Preparations Using SPME-GC-MS
Parabens in Topical Preparations Using SPME-GC-MS
GC Column Selection Guide
An optimized chromatographic separation begins with the column. Learn to select the proper capillary column based on stationary phase, column I.D., film thickness, and column length.
Flame Retardant Analytical Standards
Flame Retardant Standards: PBDE Standards. Polybrominated diphenyl ether standards accompany our chromatography products for this important analysis.
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.
Comparison of QuEChERS Products for the Extraction of Planar Pesticides from Spinach
Supel™ QuE Verde combines a novel carbon with zirconia coated silica (Z-Sep+) to provide an optimum balance between planar pesticide recovery and color removal.
GC Analysis of Neroli Essential Oil on SLB®-5ms
GC Analysis of Neroli Essential Oil on SLB®-5ms
Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shaking
Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shaking
How to Choose a Capillary GC Column
Achieve better gas chromatography separations with an appropriate column. Review the most significant factors for gc column selection: stationary phase, internal diameter, film thickness, and column length.
Resolving by Mass
Resolving by Mass
Analysis of Pesticide Residues in Pistachios Using QuEChERS Extraction and Cleanup with Supel™ QuE Z-Sep+
Pistachios contain approximately 45% fat, which can result in a significant amount of coextracted matrix in the acetonitrile extract generated using the QuEChERS procedure. A zirconia based adsorbent significantly reduces coextracted matrix prior to LC-MS or GC-MS.
SPME-GC-MS Determination of Phthalate Esters in Ramen Noodle Flavor Packets
A sensitive, quantitative, and reproducible SPME-GC/MS procedure was developed by Supelco for the extraction of phthalate esters from oily food matrices, such as the flavored oils included with ramen noodle kits.
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.
200 Meter GC Columns for Detailed Analysis of cis/trans FAME Isomers
The SP-2560/SLB-IL111 column pairing allows for comprehensive and accurate (qualitative and quantitative) determinations of saturated and trans fatty acids.
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.
A Comparison of Two Solid Phase Extraction Methods for the Analysis of Polyaromatic Hydrocarbons in Butter
Analysis of PAHs in butter can pose a special challenge due to the high fat content and the lipophilic nature of PAHs.
Analysis of Fats (Fatty Acids, FAMEs, Glycerides) in Food and Beverages
This article explores the analysis of fats in food and beverage products. From derivatization of fatty acids to FAMEs, to analysis of FAME isomers, and more we are your one-stop shop for all of your food and beverage analysis needs.
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.
Analysis of Pesticides in Baby Food by Solid Phase Microextraction (SPME) Using a New Overcoated Fiber
A direct immersion SPME method using a new overcoated SPME fiber was developed for the extraction of pesticides from pureed prune baby food.
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge
The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer
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.
Improved Recoveries and Lower Background for GC/MS/MS and LC/MS/MS Analysis of Pesticides in Green Tea
A procedure for cleanup of green tea extracts provides low background and allowed for the analysis of more pesticides at lower levels than QuEChERS. Uses less solvents and no toluene.