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Validation of GC–MS-MS for Detection and Confirmation of Low-Level Dioxins
Cristian Cojocariu, Paul Silcock, and Alexander Kotz
Newly introduced European Commission regulations permit the use of GC–MS-MS triple quadrupole technology for dioxin quantification and confirmation. In this application note, the Thermo Scientific™ TSQ™ 8000 Evo triple quadrupole GC–MS-MS system is used in accordance with the new requirements to detect and confirm low-level dioxins in animal fat, fish meal, and egg extracts with excellent selectivity and sensitivity comparable to that of GC-HRMS.
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European Commission Criteria for the Use of GC–MS-MS for Dioxin Analysis
Cristian Cojocariu, Manuela Abalos, Esteban Abad Holgado, and Paul Silcock
This application note presents an evaluation of the performance of the Thermo Scientific™ TSQ™ 8000 Evo GC–MS-MS system for dioxin analysis based on new European Commission criteria. Both solvent standards and food and feed samples are used. The results obtained using GC–MS-MS analysis are also compared to those from a GC-HRMS instrument. Download the app note |
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Three-Fold Increase in Productivity for Pesticide Residue Analysis in Baby Food
Cristian Cojocariu, Michael T. Hetmanski, Paul Silcock, and Richard J. Fussell
Babies are particularly vulnerable to the adverse health effects of pesticides, so accurate and sensitive detection, quantification, and identification of these chemicals in baby foods is critical. This application note describes analysis of 132 target pesticide residues in baby food using the Thermo Scientific™ TSQ™ 8000 Evo GC–MS-MS system. This system uses direct injection of low sample volumes of QuEChERS acetonitrile extracts, in combination with fast temperature ramps to shorten GC run times and ultimately increase laboratory productivity while providing high quality results.
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Analysis of Alkylphenols Using GC–MS-MS and Automated SRM Development
Inge de Dobbeleer, Joachim Gummersbach, and Hans-Joachim Huebschmann
Alkylphenols and ethoxylated alkylphenols are used as surfactants in a broad range of applications, from processing wood and metals, to use as emulsifiers in polymerization, and even as solvents for flavorings. They are also environmental toxins, regulated in the EU. This application note describes the analysis of alkylphenol compounds in food and environmental matrices, illustrating the productivity, high precision, and repeatability of results from the Thermo Scientific™ TSQ™ Duo GC–MS-MS system with automated selected reaction monitoring (SRM) development. Download the app note |
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Static Headspace Analysis of Residual Solvents in Flexible Packaging
Silvia Gemme and Massimo Santoro
European Standard absolute method EN 13628-1: 2002 is designed to detect residual solvents that may leach from inks or adhesives in flexible packaging onto food products. The study described in this application note uses a Thermo Scientific™ TRACE™ 1310 GC with a headspace autosampler and the Thermo Scientific™ Dionex™ Chromeleon™ Chromatography Data System software to detect and quantify residual solvents, such as acetone and propanol, in standard mixtures.
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Rapid and Reliable Detection of Dissolved Gases in Water
Andrea Caruso and Massimo Santoro
Hydraulic fracturing, or fracking, is a technique that involves creating small fractures in rock to maximize fluid removal and well productivity. However, the liberated gases may contaminate water reservoirs. This application note describes a method using a Thermo Scientific™ TRACE™ 1310 gas chromatograph with a headspace autosampler and flame ionization detector (FID) to detect and quantitate both low and high levels of dissolved gases in water samples, illustrating the system’s simple, robust, and reliable ability to test for testing possible impacts of hydraulic fracturing. Download the app note |
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Detection of Organochlorine Pesticides by GC-ECD
Andrea Caruso and Massimo Santoro
Organochlorine insecticides, such as lindane and DDT, are among the oldest and most toxic synthetic pesticides. They are known to bioaccumulate and persist in the environment. This application note describes a convenient method for analyzing and quantifying organochlorinated pesticides via gas chromatography using an electron capture detector (ECD), creating a viable, simple alternative to mass spectrometry. Download the app note |
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