Wilken C, Baltes W, Mehlitz I, Tiebach R, Weber R
Z Lebensm Unters Forsch. 1985 Jun;180(6):496-7. doi: 10.1007/BF02044302.
A rapid procedure for the isolation and clean-up on a silica gel column is described for the determination of Ochratoxin A from pork kidneys. The detection limit is 0.3 microgram/kg.