Although not the method of choice of researchers and regulatory laboratories, GC methods have been developed for analysis of patulin. These methods generally involve the formation of trimethylsilyl ether derivatives and detection by electron capture or mass spectrometry (MS) . Tarter and Scott  described the use of heptafluorobutyrate (HFB) derivatives of patulin with chromatographic separation on a nonpolar fused silica capillary column and electron capture detection. Application of the method to naturally contaminated apple juice gave a detection limit of 10 ^ patulin/l. A recent publication by Llovera et al.  described the detection of underivatized patulin by MS at a detection limit of 4 ^ patulin/l apple juice.
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