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建立水产品中氟乐灵残留量的气相色谱检测方法。水产品均质后,用丙酮提取,经正己烷液液萃取,弗罗里硅土固相萃取柱净化后,用气相色谱仪进行测定,外标法定量。该方法在0.5～100ng/mL质量浓度范围内,线性良好,定量限为1.0ng/g。分别在鳗鲡、三疣梭子蟹、文蛤、中国对虾和鲫鱼5种水产品中添加1～10ng/g氟乐灵,回收率在74.8%～99.7%之间。该方法操作简单、灵敏、准确,可以满足水产品中氟乐灵检测要求。
To establish a method for the determination of trifluralin residues in aquatic products by gas chromatography. After homogenization of aquatic products, extraction with acetone, n-hexane liquid-liquid extraction, Florisil solid-phase extraction column purification, determination by gas chromatography, external standard. The method in the range of 0.5 ~ 100ng / mL concentration, good linearity, the limit of quantification was 1.0ng / g. 1 ~ 10 ng / g trifluralin was added to 5 kinds of aquatic products such as eel, portunus trituberculatus, clam, shrimp and crucian carp, respectively. The recoveries ranged from 74.8% to 99.7%. The method is simple, sensitive and accurate, and can meet the testing requirements of trifluralin in aquatic products.