Chovancová J, Matisová E, Bátora V
J Assoc Off Anal Chem. 1985 Jul-Aug;68(4):741-5.
Residues of ethylenethiourea (ETU) in grapes and wine were determined by capillary gas chromatography and paper chromatography, without a cleanup step, and after derivatization to S-benzyl-ETU. The detection limit was 0.0002 mg/kg for flame ionization detection, 0.008 mg/kg for paper chromatography with photodensitometric evaluation of the detected spot. Results were compared with a generally used GC method specifying electron capture detection of trifluoroacetylated S-benzyl-ETU. The recoveries of ETU in grapes and wine at different concentration levels were determined. ETU residues were determined in treated grapes but no residues were detected in wine.
采用毛细管气相色谱法和纸色谱法，在不进行净化步骤的情况下，以及在衍生化为S-苄基乙撑硫脲后，测定葡萄和葡萄酒中的乙撑硫脲（ETU）残留量。火焰离子化检测的检测限为0.0002 mg/kg，纸色谱法对检测斑点进行光密度测定评估时的检测限为0.008 mg/kg。将结果与指定对三氟乙酰化S-苄基乙撑硫脲进行电子捕获检测的常用气相色谱法进行比较。测定了不同浓度水平下葡萄和葡萄酒中ETU的回收率。在经过处理的葡萄中测定了ETU残留量，但在葡萄酒中未检测到残留。
