Mineral oil hydrocarbon (MOH) contaminants can be found in foods such as cereals, baked goods, fats and oils, coffee and many more. MOH can be introduced through process aids, additives, and machine- and lubricating oils used during food processing. Packaging such as jute bags used to store and transport foods, recycled cardboard, and printing inks are other major sources of MOH contamination. MOH are separated into Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH). Some MOAH are known carcinogens and MOSH are known to accumulate in human body tissue. Subsequently, food products should be analyzed and monitored for their presence.

Aroma Office 2D (Gerstel K.K.) is an integrated software approach for simultaneous processing of retention index (RI) and mass spectra (MS) for rapid and improved identification of flavor/aroma compounds. The previous Ver. 6 (and earlier) of this software ran on the Agilent ChemStation platform and the current Ver. 7 upgrades to integration into MassHunter Unknowns Analysis. After MassHunter deconvolution and mass spectral library search, the data is processed by Aroma Office with cross searching of deconvoluted library search results and RI values. The Aroma Search module allows an entire Total Ion Chromatogram (TIC) to be processed automatically.

1,4-Dioxane is a chemical contaminant formed in trace amounts as a byproduct during the manufacturing process of detergents, foaming agents, emulsifiers and some solvents, which are widely used ingredients of commercial products such as soaps, detergents, shampoos, cosmetics, and cleaning agents. This has led to detectable levels of 1,4-dioxane in the final products resulting in consumer exposure. 1,4-Dioxane has been identified as a potential human carcinogen. A 2016 report by the Department of Health and Human Services lists 1,4-dioxane as reasonably anticipated to be a human carcinogen.

In this study, the GERSTEL PYRO was used for the pyrolysis of various materials that are relevant to forensic analysis applications, including paints, adhesives, and cosmetics. A GERSTEL MultiPurpose Sampler (MPS) was used in combination with GERSTEL PYRO and GERSTEL Cooled Injection System (CIS 4), enabling effi cient automation of the thermal extraction and pyrolysis of complex forensic materials. Fractionated and smart-ramped pyrolysis modes followed by gas chromatography mass spectrometry (GC-MS) analysis were used to determine important volatile additives and pyrolysates (from polymers) present in a diverse set of samples.

Preparation of calibration standards and quality control samples are critical tasks in chemical analysis. The accurate and precise transfer of liquid standards and solutions is critical for ensuring the validity of analytical results. Automating the accurate transfer of liquid standards and solutions helps to improve the quality of the analytical procedure while freeing the analyst from performing tedious and repetitive manual tasks

Gas Chromatography-Olfactometry (GC-O) is an essential technique in aroma analysis. Olfactory detection is often performed in parallel with GC detection, for example, using a mass spectrometer. To ensure that an Olfactory Detection Port (ODP) is installed properly and is in good working condition, a performance checkout procedure is required. An ODP checkout standard has therefore been developed and its application is discussed in this document.

enLiquid-liquid extractions are used to extract and concentrate analytes from aqueous matrices. This extraction technique is widely accepted as shown by its inclusion ...

Static headspace analysis is often considered to be useful only when the analytes of interest are present in high concentrations. Although techniques like solid phase microextraction (SPME) and dynamic headspace (DHS) have better extraction effi ciencies, due to advances in mass spectrometry design, VOCs can now be detected in the parts per billion range using static headspace. Static headspace is routinely used for blood alcohol determination and for the analysis of residual solvents in pharmaceuticals. Method development is fast and simple, usually with little to no sample preparation.

Laboratory samples are typically extracted prior to analysis by sensitive GC-MS or LC-MS/MS methods to separate the analytes of interest from the bulk of matrix components ...

In this study, Thin Film Solid Phase Micro-Extraction (TF-SPME) devices with carboxen/polydimethylsiloxane (CAR/PDMS), divinylbenzene/polydimethylsiloxane (DVB/PDMS), and hydrophilic lipophilic balanced/polydimethylsiloxane (HLB/PDMS) coatings are investigated for their usefulness for beverage analysis in combination with Stir Bar Sorptive Extraction (SBSE) using the GERSTEL Twister®. A variety of beverages are analyzed including almond milk, black tea, strawberry banana juice, amber lager, and pumpkin ale. The GERSTEL MPS is used in combination with a CIS 4 inlet and thermal desorber for automated thermal desorption of the TF-SPME devices.