Mass spectrometry

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Showing 1-30 of 76 results

GC Analysis of Aldehydes (PFBOA Derivatives) in Beer on SLB®-5ms after SPME using a 65 µm PDMS/DVB Fiber

LC/MS/MS Analysis of Aflatoxins in Hops on Ascentis® Express 2.7 μm Phenyl-Hexyl after Cleanup Using Supel™ Tox AflaZea SPE

Developing a Quantitative SPME Method

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.

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.

LC/MS Analysis of Glyphosate and Metabolites on apHera™ NH2, 2 mm I.D. Column

Protocol for LC/MS Analysis of Glyphosate and Metabolites on apHera™ NH2, 2 mm I.D. Column

Peptide Mapping LC-MS/MS Analysis Workflow for Adalimumab

An optimized LC-MS/MS based workflow for low artifact tryptic digestion and peptide mapping of monoclonal antibody, adalimumab (Humira) using filter assisted sample preparation (FASP).

Mass Spectral Column Bleed in Nitrogen-Containing Polar-Embedded HPLC Stationary Phases

AOAC Method 2011.11: UHPLC/MS/MS Analysis of Vitamin D2 and Vitamin D3 on Titan™ C18

Separation of Ergocalciferol (D2), analytical standard; Cholecalciferol (D3), analytical standard

GC Analysis of Terpenes in Cannabis on Equity-1 after Headspace SPME

GC Analysis of Terpenes in Cannabis on Equity®-1 after Headspace SPME using 50/30 μm DVB/CAR/PDMS Fiber

Biological Testing for Amphetamine and Methamphetamine Abuse

In this study, optimized methods are presented for sample preparation and chiral chromatography for the LC/MS analysis of amphetamine and methamphetamine enantiomers in urine.

GC Analysis of Sterols (Silylated Derivatives) in Olive Oil (Free Sterol Fraction) on SLB®-5ms after SPE using Discovery DSC-Si

Separation of Cholesterol; Brassicasterol; Campesterol; Stigmasterol; β-Sitosterol

Chiral LC-MS/MS of D- and L-2-Hydroxyglutaric Acid Biomarkers

We describe here a rapid and sensitive method to separate and measure D-2-OHG and L-2-OHG enantiomers using high-resolution mass spectrometry (HRMS) detection.

Fast and Reliable Environmental Analysis of Aldehyde and Ketone Air Pollutants

Aldehydes and ketones are ubiquitous air pollutants. Along with esters and ethers, they are major components of indoor air pollution and are therefore important for industrial hygiene applications.

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.

LC/MS Analysis of Nucleotides on SeQuant ZIC-cHILIC

HILIC separation is an alternative that permits sensitive MS detection and without the use of ion-pair reagents.

Online SPE/LC-MS Method for the Rapid Analysis of Thyroid Hormones in Plasma

Determination of the thyroid hormones T4, T3 and rT3 from plasma using an Ascentis Express RP-Amide cartridge to trap the analytes, and a Phenyl-Hexyl column to resolve them.

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.

LC/MS Analysis of Nucleotides SeQuant^® ZIC^®-cHILIC – Effect of pH

ZIC®-cHILIC is a densely bonded zwitterionic stationary phase with phosphorylcholine functional groups covalently attached to silica.

Extraction and Analysis of PAHs in Olive Oil using Molecularly Imprinted Polymer SPE and GC-MS

Enrichment of Phospholipids in Biological Samples Using HybridSPE-PL

A simple method to enrich phospholipids from plasma samples, involving a HybridSPE-PPT 96-well plate that both retains phospholipids and removes precipitated proteins.

Rapid, Sensitive, and Quantitative LC/MS/MS Determination of Digitoxin and Digoxin in Plasma

Immunoassay-based methods for digitoxin or digoxin exist, but are time consuming, labor intensive, and not selective due to similarities in their chemical structures.

LC/MS/MS Analysis of Interacting Cardiac Drugs Digoxin, Quinidine, Amiodarone and Verapamil on Titan™ C18

Empowering Biochemists to Analyze Glycoproteins with Exceptional Reproducibility

Fast, high-resolution separations of procainamide labeled glycans - dextran ladder, human IgG and cetuximab

Determination of Triclosan in Environmental Waters

Triclosan was detected in waste water plant discharge using HPLC followed by UV and MS/MS detection.

Improved Determination of Volatile Organic Compounds in Water by SPME and GC/MS: ISO Standard 17943

High performance, reliability, and reproducibility of HS-SPME in combination with GC/MS for the determination of VOCs in water was proven in an interlaboratory trial. The new ISO 17943 using HS-SPME is an improvement on existing official methods for this determination

Purification of Serum Peptides for MALDI Mass Spectrometry with Amicon® Ultra Centrifugal Filters

Biomarkers play an essential role in the drug discovery and development process.

Workflow and Analysis of Stressed and Unstressed Antibody Samples By Size Exclusion Chromatography

A complete SEC-UV workflow for quantifying monoclonal antibody fragments, monomers, and aggregates, including procedure for a system suitability test and heat stressing of antibodies.

HPLC Analysis of Insulin Variants and Analogs

Chromatographic technique identifies insulin variants efficiently, aiding in pharmacokinetics.

High-Throughput Glycoprofiling Workflow for Rituximab

SEC-MS protocol for rapid glycoprofiling of monoclonal antibodies with antibody purification and mass spectrometer calibration.

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