Articles
Analysis of PCBs in Fish Oil
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 elec...
Kathy Stenerson, Caitlin Brown
Reporter US Volume 33.4 (Food & Bev. Suppl.)
Keywords: Chromatography, Column chromatography, Electron capture detector, Fractionation, Gas chromatography, High performance liquid chromatography, Mass spectrometry, Sample preparations, Size-exclusion chromatography, Solid phase extractions
Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge
Ginger comes from the rhizome of the plant Zingiber officinale. It has been used for thousands of years as both a spice for cooking and a treatment for ailments such as nausea, gastrointestinal (GI) ...
Keywords: Capillary electrophoresis, Cardiovascular, Enzyme activity, Gas chromatography, Gas chromatography mass spectrometry, Gastrointestinal, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass selective detector, Mass spectrometry, Pesticides, Reductions, Solid phase extractions
Analysis of Pesticides in Black Tea by GC/MS/MS on SLB® Using Supelclean™ Ultra Cleanup
From our library of Articles, Sigma-Aldrich presents Analysis of Pesticides in Black Tea by GC/MS/MS on SLB® Using Supelclean™ Ultra Cleanup
Keywords: Gas chromatography, Mass spectrometry, Sample preparations
Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with a Novel Dual-Layer SPE Cartridge
Turmeric is a plant indigenous to south Asia, with a majority of its production coming from India. The rhizome of the plant is used to produce powdered turmeric, which is used in foods, cosmetics, an...
Katherine K. Stenerson
Principal R&D Scientist
Keywords: Anti-inflammatory agents, Antimicrobials, Capillary electrophoresis, Cosmetics, Gas chromatography, High performance liquid chromatography, Mass selective detector, Mass spectrometry, Pesticides, Reductions, Solid phase extractions
Bath Salts in Urine
LC-MS Analysis of Illicit Bath Salts in Urine on Ascentis Express HILIC after Solid Phase Extraction (SPE) on Supel-Select SCX
Keywords: Chromatography, Diagnostic, Forensic, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Sample preparations, Separation, Solid phase extractions
Determination of PAHs in Paprika Powder Using a Novel SPE Cartridge
Paprika is a spice made from dried sweet peppers, and is used for flavor and color in many types of cuisine. Contamination with polynuclear aromatic hydrocarbons (PAHs) can occur when pepper plants a...
Katherine K. Stenerson
Keywords: Capillary electrophoresis, Chromatography, Gas chromatography, Mass spectrometry, Pesticides, Reductions, Sample preparations, Size-exclusion chromatography, Solid phase extractions, Solvents
GC Analysis of PCBs in Soybean Oil After Extraction using EZ-POP NP SPE
From our library of Articles, Sigma-Aldrich presents GC Analysis of PCBs in Soybean Oil After Extraction using EZ-POP NP SPE
Keywords: Chromatography, Electron capture detector, Gas chromatography, Sample preparations, Solid phase extractions
GC/MS/MS Analysis of Pesticides in Ginseng on SLB®-5ms after QuEChERS Cleanup usingSupelClean™ Ultra
From our library of Articles, Sigma-Aldrich presents GC/MS/MS Analysis of Pesticides in Ginseng on SLB®-5ms after QuEChERS Cleanup usingSupelClean™ Ultra
Keywords: Gas chromatography, Mass spectrometry, Pesticides, Size-exclusion chromatography, Solid phase extractions
Improved Recoveries and Lower Background for GC/MS/MS and LC/MS/MS Analysis of Pesticides in Green Tea
Tea is second only to water as the most popular beverage worldwide. All teas come from the leaves of the same plant, camellia sinensis. The various types of tea arise from differences in how and wher...
Katherine K. Stenerson
Reporter US Volume 34.4
Keywords: Agriculture, Capillary electrophoresis, Gas chromatography, High performance liquid chromatography, Mass spectrometry, Oxidations, Pesticides, Reductions, Solid phase extractions, Vitamins
LC/MS/MS Analysis of Aflatoxins in Cannabis on Ascentis® Express 2.7µm Phenyl-Hexyl after Cleanup using Supel™ Tox AflaZea SPE
From our library of Articles, Sigma-Aldrich presents LC/MS/MS Analysis of Aflatoxins in Cannabis on Ascentis® Express 2.7µm Phenyl-Hexyl after Cleanup using Supel™ Tox AflaZea SPE
Keywords: Chromatography, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Sample preparations, Solid phase extractions
QuEChERS Cleanup and Analysis of Veterinary Drugs in Milk by LC/MS/MS
The use of mass spectrometry (MS) as an analytical technique allows quick screening, identification, and confirmation of contaminants. In spite of advances that MS instrumentation brings to achieve e...
Olga I. Shimelis, and Jennifer Claus
Reporter US Volume 34.1
Keywords: Antibiotics, Calorimetry, Environmental, High performance liquid chromatography, Mass spectrometry, Pesticides, Phase transitions, Sample preparations, Separation, Solid phase extractions, Veterinary
UHPLC/MS of Drugs and Metabolites in Urine following Enzymatic Hydrolysis
β-D-Glucuronide glucuronosohydrolase enzymes, commonly shortened to β-glucuronidase, play an important role in the analysis of biological fluids for the presence of metabolites for drug screening and...
Craig Aurand, Manager; Kristen Brown, Pennsylvania State University
Reporter US Volume 33.2
Keywords: Carbohydrate metabolism, Derivatizations, Digestions, Enzyme activity, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Metabolism, Metabolites, Sample preparations, Separation, Solid phase extractions, Solvents
SPE Cartridges (Tubes) - Phase Selection Guide
The SPE Tube Configuraton Guide will help you choose the appropriate bed weight and cartridge dimensions.
Keywords: Agriculture, Calorimetry, Environmental, Fractionation, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Pesticides, Pharmaceutical, Solid phase extractions