Andreas Hoffmann
9 Papers
37 Citations
Andreas Hoffmann is an academic researcher. The author has contributed to research in topics: Gas chromatography & Chemistry. The author has an hindex of 8, co-authored 9 publications.
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Papers
Application of stir bar sorptive extraction to the determination of polycyclic aromatic hydrocarbons in aqueous samples.
TL;DR: The technique of stir bar sorptive extraction for polycyclic aromatic hydrocarbons determination shows excellent linearities for 5 point calibrations and Carry-over seems to be negligible for most of the compounds.
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Determination of stale-flavor carbonyl compounds in beer by stir bar sorptive extraction with in-situ derivatization and thermal desorption-gas chromatography-mass spectrometry.
TL;DR: The method showed good linearity over the concentration range from 0.1 to 10 ng ml(-1) for all analytes and the correlation coefficients were higher than 0.9993, and was successfully applied to low-level concentration samples.
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Analysis of volatile organic compounds in human urine by headspace gas chromatography-mass spectrometry with a multipurpose sampler
TL;DR: The high practicability of the multipurpose sampler for both gaseous and liquid samples together with the here shown good reproducibility and sensitivity make this single CIS-GC-MS system very attractive for routine clinical use in metabolic profiling of organic volatile (headspace) and non-volatiles (liquid).
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Identification of plasticizers in medical products by a combined direct thermodesorption-cooled injection system and gas chromatography-mass spectrometry
TL;DR: The combination of a new thermodesorption module with a cooled injection system now provides a powerful system for direct analysis of volatile trace compounds in gaseous, liquid and solid samples by gas chromatography-mass spectrometry (GC-MS).
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Full evaporation dynamic headspace and gas chromatography-mass spectrometry for uniform enrichment of odor compounds in aqueous samples.
TL;DR: The feasibility and benefit of the FEDHS-GC-MS method was demonstrated with analyses of key odor compounds including hydrophilic and less volatile characteristics in beverages (whiskey and green tea) and heat-induced artifact formation for potent odorants was also examined.
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