In the work presented here, perfluorinated compounds were extracted from different food types (egg, fish and meat) using a QuEChERS-like approach followed by online-SPE cleanup and LC-MS/MS determination. In addition to validating the analysis method in accordance with the EU Guidance Document [1], matrix-based calibrations were compared to solvent-based calibrations to illustrate the matrix effects and demonstrate the cleanup efficiency. Online-SPE enables the injection of large amounts of sample extract, helping to reach the required quantification limits of 0.01 to 0.05 μg/kg.

Pesticides are frequently determined in various food and beverage types and in environmental samples. A common sample preparation method used is known as QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe). The method involves salting-out liquid-liquid extraction with acetonitrile and subsequent clean-up of the extract using dispersive solid-phase extraction. Usually, 1 – 2 μL of the extract is then injected into the analytical instrument for analysis. To further improve the sensitivity, automated evaporative concentration of the extract using the GERSTEL mVAP can be combined with Large Volume Injection in the GERSTEL CIS 4 inlet and GC-MS analysis.

Nylon is an important class of synthetic polymers used in a variety
of products. Nylon polymers are aliphatic polyamides that are classified in two groups according to their composition. These are the Ω-aminocarboxylic acid-type and the diamine-dicarboxylic acid-type. The Ω-aminocarboxylic acid-types consist of a single amine group attached to a carbonyl group. The diamine-dicarboxylic acid-types consist of two amine groups attached to a repeating  dicarbonyl group. The thermal degradation products of the two nylon categories are well established [1-3].

Plant-based proteins are a rapidly growing market with plantbased seafood replacement also seeing significant growth in recent years. The key to the overall food experience is the aroma perceived while consuming the product.

In this study, four immersion extraction techniques using the GERSTEL PDMS Twister® and PDMS/HLB TF-SPME devices were compared for their efficacy in extracting a broad range of flavor compounds in hard seltzer beverages.

Acrylates and methacrylates are two important classes of polymers used in a wide variety of products.

In this study, volatiles were collected from the headspace around plants for subsequent determination by GC/MS. Passive air sampling was performed using Thin Film Solid Phase Microextraction (TF-SPME) devices coated with divinylbenzene/polydimethylsiloxane (DVB/PDMS) as well as with the GERSTEL Twister® coated with PDMS. Active air sampling was performed onto thermal desorption tubes filled with PDMS foam and Tenax® TA, respectively. Violet star petunias, oakleaf hydrangeas, citronella, and lemon thyme plants were used for this study.

Fatty acid esters of 3- and 2-monochloropropanediol (3-MCPD-e, 2-MCPD-e) and glycidol (Gly-e) are process contaminants that are formed, for example, when edible oils and fats are refined. After ester cleavage during digestion in the human body they pose a relevant health risk and therefore need to be determined in edible oils and fats and in fat containing food.

Acrylamide is a thermal process contaminant formed in foodstuff during heating at temperatures exceeding 120 °C. It is detected especially in French fries, potato chips, bread, and crispbread, as well as in coffee and coffee surrogates. The International Agency for Research on Cancer classifies it as probable human carcinogen and the EU has established indicative values for different foodstuffs.

In the work presented here, the perfluorinated carbonic and sulfonic acids listed in the EU Drinking Water Directive (EU 2020/2184) were determined by an automated method based on solid phase extraction with weak anion exchange sorbent combined with LCMS/MS.