Contents of A and B-type trichothecenes and zearalenone mycotoxins in maize grains used for EtOH prodn. were detd. by high-performance lig. chromatog. with mass spectrometry. Presence of 8 from 12 expected mycotoxins was confirmed. The dominating mycotoxin was deoxyniyalenol (190-1386 mu g/kg).