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MSTFA/MSTFA-d9 Derivatization of Amphetamine for GC/MS Detection and Identification
Example displays how MSTFA/MSTFA-d9 derivatization of amphetamine provides valuable information in mass spectra and chromatograms using SLB-5ms GC column.
GC Analysis of Total Petroleum Hydrocarbons (TPH) on SLB®-5ms
Separation of Hexane; Heptane; Octane; Nonane; Decane; Undecane; Dodecane; Tetradecane; Hexadecane; Octadecane; Eicosane; Tetracosane; Octacosane; Dotriacontane; Hexatriacontane; Tetracontane; Tetratetracontane
radiello® Diffusive Air Sampling Application - Volatile Organic Compounds (VOCs) Thermally Desorbed
Volatile organic compounds are trapped by adsorption and recovered by thermal desorption, analysis is performed by capillary gas chromatography and FID or MS detection.
Determination of Headspace Volatiles in Distilled Spirits Using SPME Coupled to GC
In this article, SPME-GC was successfully used to identify many volatile compounds present in the headspace over several spirits.
Analysis of Polychlorinated Biphenyls in Fish Oil Using Supelclean™ EZ-POP NP, Silica Gel SPE, and an SLB®-5ms GC Column
Polychlorinated biphenyls (PCBs) were once widely used in many industrial and commercial applications such as insulating fluids, dielectrics, and lubricants. This included their extensive use in electrical transformers. PCB use has been banned in many countries, and the Stockholm Convention
Extraction and Analysis of PAHs from Grilled Hamburger
A QuEChERS approach was effectively used to extract PAHs from grilled hamburger meat; the SPB-608 GC column provided the selectivity necessary to resolve all but one isomeric set.
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling.
Dual-Column GC Analysis of Organochlorine Pesticides on SLB®-5ms and SLB®-35ms
The primary column is used to determine presence of the target analytes in the sample; the secondary column of a different selectivity confirms whether a positive match.
GC Analysis of Agricultural Pesticides (Standard) on SLB®-5ms
GC Analysis of Agricultural Pesticides (Standard) on SLB®-5ms
US EPA Method 8141: GC Analysis of Organophosphorus Pesticides (OP-Pest) on Equity®-5, NPD Detection
analytical standard; Tokuthion, technical grade, pkg of 50 mg; Crotoxyphos; Phorate; Azinphos-ethyl; Diazinon; Azinphos-methyl; Demeton-O; Dimethoate; Chlorpyrifos-methyl
Analysis of Residual Solvents in Hemp Extract by Headspace SPME-GC/MS
The use of solid phase microextraction (SPME) allowed for the straightforward, fast, sensitive, and accurate GC/MS determination of the residual solvent content of spiked and unspiked samples of hemp extract.
GC Analysis of Fatty Acids in Walnuts and Peanuts
Determination of the fatty acid composition of nuts using established methods for GC analysis on capillary columns of 3 selectivities: Omegawax, SP-2560, and ionic liquid based SLB-IL111.
Testing Food for Fipronil Contamination
Test your food for fipronil contamination using our analytical standards, certified reference materials, solvents, and columns for analysis.
Veterinary Drug Residues
The use of veterinary drugs may be integral to the process of raising food producing animals and fish. These can include antibiotics, hormones, and steroids.
GC Analysis of Volatiles in Milk on Supel-Q™ PLOT after SPME using a 75 µm PDMS/Carboxen Fiber
Separation of 4-Methyl-2-pentanone; Dimethyl disulfide; Hexanal; 3-Methylpentane; Acetone
GC Analysis of Terpenes in Hops (Cascade Variety) on Equity®-1 after Headspace SPME using 50/30 µM DVB/CAR/PDMS Fiber
-ß-Farnesene; Humulene; γ-Muurolene; γ-Selinene; Geranyl isobutyrate; ß-Selinene; a-Muurolene; a-Selinene; γ-Cadinene; Calamenene; Δ-Cadinene; Caryophyllene oxide; Humulene oxide
Standard Methods 6040D: GC Analysis of Geosmin and 2-MIB on SLB®-5ms after SPME using 50/30 µm DVB/Carboxen/PDMS Fiber
Separation of 2-Isopropyl-3-methoxypyrazine 20 ppt; 2-Isobutyl-3-methoxypyrazine; 2-Methylisoborneol; (±)-Geosmin 10 ppt
GC Analysis of Methanol Impurity in Biodiesel on Equity®-1 after SPME using 85 µm Polyacrylate Fiber
GC Analysis of Methanol Impurity in Biodiesel on Equity®-1 after SPME using 85 µm Polyacrylate Fiber
ENVI-Carb Plus for the Extraction of Propylene Glycol and Ethylene Glycol from Water
ENVI-Carb Plus for the Extraction of Propylene Glycol and Ethylene Glycol from Water
Developing a Quantitative SPME Method
Developing a Quantitative SPME Method
GC Analysis of Volatiles in Roasted Coffee Beans on Omegawax® after SPME using a 50/30 µm DVB/Carboxen/PDMS Fiber
-Cymene; 2,5-Dimethylpyrrole; Acetoin, ≥96%, FCC, FG; 2,5-Dimethylpyrazine; 2,6-Dimethylpyrazine; 2-Ethylpyrazine, ≥98%, FG; 2,3-Dimethylpyrazine; 4-Heptanone; 3-Ethylpyridine; 2,3,5-Trimethylpyrazine; Furfural; Pyrrole; Furfuryl acetate; Linalool; Linalyl acetate; 5-Methylfurfural; γ-Butyrolactone; 2-Acetyl-1-methylpyrrole; Furfuryl alcohol; 2-Acetylpyrrole; Pyrrole-2-carboxaldehyde
FAME Standard for Optimizing GC System Performance
FAME Standard for Optimizing GC System Performance
Standards for ISO 18857-2
Analysis of alkylphenols and alkylphenol ethoxylates: Sigma-Aldrich is pleased to offer the complete range of labeled compounds listed in ISO 18857-2 for the analysis of OP, NP and their mono- and diethoxylates.
acrylamide in food
Acrylamide analysis has been a very hot topic since the chemical was identified in food in 2002 by researchers at the Swedish National Food Administration.
New GC-MS Method for Mycotoxin Analysis
An article regarding A New GC-MS Method for Mycotoxin Analysis Using 13C-marked Mycotoxin Derivatives from Sigma-Aldrich.com
GC Analysis of Omega 3 Fatty Acids in Fish Oil Capsules and Farm Raised Salmon
nalysis of the omega 3 fatty acid profiles from fish oil capsules and salmon, highlighted through the use of 2 GC columns of different selectivity for analysts who wish to perform confirmatory analysis.
GC Analysis of PBDE Flame-Retardant Compounds
GC Analysis of PBDE Flame-Retardant Compounds
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