Application Notes: General

• USP monograph modernization using ion chromatography • USP modernization for titration of pharma involves moving to autotitration

This application note describes an analysis of EU polycyclic aromatic hydrocarbons in pumpkin seed oil using a liquid–liquid extraction, followed by a Bond Elut EMR–Lipid cleanup..

Hallucinogenic mushrooms, known as magic mushrooms, contain psychoactive compounds such as psilocin and psilocybin (Figure 1). This hallucinogenic effect means they are constantly offered on the black market. Therefore, the reliable quantification of these compounds is a particularly important task for forensic analysis because their results have a significant impact on the judgement passed by the courts.

We recently introduced a new series of UHPLC columns with a particle size of 1.6 µm. Here we explain how to transfer an existing HPLC method to a new UHPLC method using polyphenols as an example.

• CESI-MS is vital for nitrosamines analysis in post-harvest fumigation • Results of USDA testing of CESI-MS tools

The Guide to LC Troubleshooting is a valuable resource, not just for analytical chemists but for anyone who uses liquid chromatography. This eBook-containing charts that are published in a logical and easy-to-understand format-discusses common LC problems and their causes, and offers solutions for addressing them in the laboratory.

• Overview of extraction technology in food safety studies • How a single, automated method extracts pesticides from various matrices • Q&A: Improving sample prep for LC/GC analysis of plastics, foods & more

Eliminating laborious sample preparation, field-flow fractionation greatly facilitates the absolute characterization of lignosulfonates by multi-angle light scattering.

• Background on capillary electrophoresis • Importance of glycan screening • Benefits of high-throughput screening with intuitive data analysis

One of the fundamental tenets of chromatography is the interaction between an analyte and stationary phase.

Plastics play a role in just about every market sector and research area including agriculture, food, packaging, pharmaceuticals, medical implants, and personal care products, making the potential leaching of additives like antioxidants or slip additives a major concern. In this article learn how the EDGE is able to extract additives from plastics in a fraction of the time of traditional techniques.

Analysis of paralytic shellfish toxins using a HPLC single step-gradient method with products of post-column derivatization detected using a fluorescence detector

Phenol formaldehyde resins (PFR) are used in various industrial products because of their versatile properties. Thermoplastic and thermo-reactive resin types differ in the degree of remaining reactive groups and their molar mass distribution (MMD). We compared the MMDs of two phenolic resins by gel permeation chromatography (GPC).

A simple 15-minute extraction method is all that is needed to quickly prep plastics for phthalate analysis.

A simple 15-minute extraction method is all that is needed to quickly prep plastics for phthalate analysis.

This application note shows the pyrolysis-GC×GC–HRMS profiles of crude oils for more detailed separations and more complete characterization of complex matrices, especially on the speciation of heteroatoms such as sulphur-containing compounds.

SEC-MALS analysis of cellulose provides absolute molar mass distributions to understand the impact of different extraction processes. The biopolymer is solubilized in DMAC, enabling liquid chromatography without degradation.

Chitosans are analyzed by SEC-MALS to determine molar mass moments and distributions.

Quantifies affinity, stoichiometry of biomolecular assemblies, helping understand the mechanism of interaction and develop therapeutics that target and modulate them.