Abstract
A method for extracting butyl‐, cyclohexyl‐, octyland phenyl‐tin compounds in fruit juices was developed using 0.05% tropolone in 25% pentane/diethyl ether. Methyl derivatives formed by Grignard reaction were quantified by gas chromatography‐atomic absorption spectrometry. Several fruit juices contained low ng cm−3 levels of butyl‐ and octyl‐tins. Gas chromatography‐mass spectrometry, used for the confirmation of the butyl‐ and octyl‐tins, also detected phenyl‐ and cyclohexyl‐tin compounds at levels below the GC AA detection limits (0.03–0.05 ng Sn cm−3).