Peter Weigert

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As a means of assessing the performance of European laboratories who contribute analytical data on food contamination to the World Health Organization (WHO) Global Environmental Monitoring Scheme (GEMS), a series of five proficiency testing exercises were carried out during 1993 and 1994. In total 136 laboratories from 21 different countries took part in(More)
  • P Weigert
  • Zeitschrift fur Rechtsmedizin. Journal of legal…
  • 1981
Presented here is a rapid method of identifying 4-hydroxycoumarins in organs or blood samples. Using an ultrasonic homogenizer, a complete analysis is obtained in less than 30 min. Coumarin derivatives are identified by means of derivative UV spectroscopy in the normal spectrum and its first derivation at 340 to 240 nm. HPTLC can be employed as(More)
  • P Weigert
  • Zeitschrift für Lebensmittel-Untersuchung und…
  • 1978
The muscle and fatty tissue of 101 deep-frozen fattened stewing chickens was tested for Hg content. After wet digestion, the mercury content was determined by cold-flameless AAS (atomic absorption spectrometry). The average Hg content in muscle and/or fatty tissue was 0.004 and 0.001 ppm of fresh weight, respectively and thus was very low. The limit value(More)
Presented here is a rapid method of identifying 4-hydroxycoumarins in organs or blood samples. Using an ultrasonic homogenizer, a complete analysis is obtained in less than 30 min. Coumarin derivatives are identified by means of derivative UV spectroscopy in the normal spectrum and its first derivation at 340 to 240 nm. HPTLC can be employed as(More)