Hanspeter Sprecher

ORCID: 0009-0008-7990-4403
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About
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Research Areas
  • Analytical Chemistry and Chromatography
  • Effects and risks of endocrine disrupting chemicals
  • Chromatography in Natural Products
  • Pesticide Residue Analysis and Safety
  • Essential Oils and Antimicrobial Activity
  • Phytochemistry and biological activity of medicinal plants
  • Pharmacological Effects and Assays

Merck (Germany)
2023

The method herein described involves a rapid and limited-volume (0.5 mL of acetonitrile) solvent-extraction sample preparation process, for pesticide determination in hemp seed oil. extraction was characterized by the absence both clean-up or pre-concentration steps. extracts were directly analyzed through cryogenic-modulation comprehensive two-dimensional gas chromatography coupled to triple quadrupole mass spectrometry. novelty characterizing present research [compared previous one (Arena...

10.1016/j.chroma.2023.464432 article EN cc-by Journal of Chromatography A 2023-10-05

Abstract Matrix-based certified reference materials (CRMs) play a central role in the analysis of food contaminants for ensuring measurement accuracy and comparability, as they exhibit same matrix effects during sample preparation under investigation. However, availability such CRMs is still limited. This also true containing polycyclic aromatic hydrocarbons (PAHs), which maximum levels are set EU by Commission Regulation (EU) 2023/915 Switzerland regulation SR 817.022.15. Therefore, whey...

10.1007/s00216-023-04863-9 article EN cc-by Analytical and Bioanalytical Chemistry 2023-07-28
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