[Determination of zearalenone in edible oils with SEC and LC-ESI-MS/MS]. / Bestimmung von Zearalenon in Speiseölen mit GPC und LC-ESI-MS/MS.

A new method for the determination of zearalenone in edible oils with size exclusion chromatography (SEC) followed by LC-MS/MS as well as HPLC-FLD was developed and validated. By using the LC-MS/MS determination no further clean up step is necessary after the SEC. The correlation coefficient of 0.999 for the two detection systems is acceptable. In this research 77 edible oils were analyzed. The mean average value of 38 corn germ oils was 169 µg/kg, the maximum value amounted up to 921 µg/kg.

[Not Available]. / Bestimmung von deoxynivalenol mittels LC - MS/MS (Tandem Massenspektrometrie).

A sensitive and selective method using high-performance liquid chromatography in combination with atmospheric pressure chemical ionization tandem mass spetrometry (LC-APCI-MS/MS) has been developed for the determination of Deoxynivalenol (DON) in trace levels. The extract was purified with a MultiSep™ column followed by the Vicam™ DON immunoaffinity column. Quantification is based on an external standard method using positive Multiple Reaction Monitoring (MRM). The limit of detection was 5 µg/kg with a signal to noise ratio of 3:1.