Mass spectrometry

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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.

Simple Urine Drug Screening with MS β-glucuronidase: Quick Start Guide and Demo Video

MS β-glucuronidase urinalysis workflow overview, features and benefits, and quick start guide video for your drug testing application needs.

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

Neonicotinoids

Learn more about Neonicotinoids - active substances used in plant protection products to control harmful insects.

Analysis of Melamine in Milk

Melamine was extracted from milk using Supelco® Discovery® DSC-SCX SPE tubes. Analysis was performed by HPLC, using an Ascentis® Express HILIC column.

LC/MS/MS Analysis of Steroid Hormones in Plasma

The conversion of clinical methods to LC/MS/MS offers advantages; however, is accompanied by a few limitations, notably interference effects from the endogenous sample matrix.

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.

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.

Analysis of Fipronil and Fipronil Sulfone in Eggs, Chicken Meat and Mayonnaise

A short abstract on a method using QuEChERS and GC/MS/MS for determination of fipronil & fipronil sulfone.

HPLC Analysis of Insulin Variants and Analogs

Chromatographic technique identifies insulin variants efficiently, aiding in pharmacokinetics.

LC/MS Analysis of Phospholipids in Milk on Asc

(soybean), ≥97%; L-α-Phosphatidylethanolamine from egg yolk, Type III, ≥97% (TLC), lyophilized powder; L-α-Phosphatidylcholine, from egg yolk, Type XVI-E, ≥99% (TLC), lyophilized powder; Sphingomyelin, from chicken egg yolk, ≥95%

PAHs Determination in Paprika Powder using SPE

Paprika spice's PAH contamination risk due to environmental exposure highlights food safety concerns.

Bispecific Monoclonal Antibody Analysis

New size exclusion chromatographic method characterizes bispecific antibodies for biotherapeutics development.

MS Metabolite Library Protocol

MSMLS™ offers high-purity small biochemical molecules for broad primary metabolism studies in an economical, ready-to-use format.

Neonicotinoids Ban: Impact on Plant Material

Analysis of banned neonicotinoid insecticides from dandelion blossoms using QuEChERS and LC-MS.

Bisphenol A Analysis in Food by SPME

Overcoated SPME fiber enables low-level BPA analysis in food via SPME-GC-MS/MS, meeting tighter migration limit regulations.

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.

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

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

Developing a Quantitative SPME Method

Analysis of Isocyanates Using the ASSET™ EZ4-NCO Dry Sampler

The unique sampler design ensures that both the vapor phase and particulate isocyanates are captured and derivatized during sampling.

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

Chiral LC-MS Analysis of Methamphetamine in Urine on Astec® CHIROBIOTIC® V2

Efficient LC-MS separation of methamphetamine enantiomers in urine allows sensitive differentiation of illicit D-methamphetamine from over-the-counter L-methamphetamine.

HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide

LC/MS Analysis of L-Methionine Sulfoximine and Sulfone on Ascentis® Express OH5

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

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.

US EPA Method 8270 (PAH only): GC Analysis of PAHs on SLB®-5ms

GC Analysis of PAHs on SLB®-5ms

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