Polzhofer K
Z Lebensm Unters Forsch. 1978 Sep 28;167(3):162-4. doi: 10.1007/BF01122837.
Analytical methods for the determination of MCPA (2-methyl-4-chlorophenoxyacetic acid) and TERBACIL (3-tert. butyl-5-chloro-6-methyluracil) in apples are described. The detection limits of the methods are 0.04 mg/kg for TERBACIL and 0.1 mg/kg for MCPA. With additions between 0.05--0.1 mg TERBACIL/kg apples the recovery rates lie between 95--105%. With additions between 0.1--0.5 mg MCPA/kg apples the recovery is between 103--114%.
