一种测定鸡肉组织中八氯和九氯-2-苯氧基苯酚的方法。
A method for the determination of octa- and nonachloro-2-phenoxyphenols in chicken tissue.
作者信息
Newsome W H, Shields J B
出版信息
Int J Environ Anal Chem. 1983;14(4):299-306. doi: 10.1080/03067318308071627.
A gas-liquid chromatographic method was developed capable of determining octa- and nonachloro-2-phenoxyphenols in chicken liver or muscle at 0.25 ppb and fat at 2.5 ppb. The method involves extraction with acidified acetone:hexane, cleanup with concentrated H2SO4 and Florisil column chromatography, methylation with diazomethane, and quantitation by capillary column gas-liquid chromatography with electron capture detection. Fortification of liver and muscle at 0.25 or 0.5 ppb and fat at 2.5 or 5.0 ppb and subsequent analysis yielded recoveries averaging 91% for octa- and 97% for nonachlorophenoxyphenol.
已开发出一种气液色谱法，该方法能够测定鸡肝或肌肉中浓度为0.25 ppb的八氯和九氯-2-苯氧基苯酚，以及脂肪中浓度为2.5 ppb的八氯和九氯-2-苯氧基苯酚。该方法包括用酸化的丙酮：己烷萃取、用浓硫酸和弗罗里硅土柱色谱法净化、用重氮甲烷甲基化，以及通过带有电子捕获检测的毛细管柱气液色谱法定量。在肝脏和肌肉中添加浓度为0.25或0.5 ppb的八氯和九氯-2-苯氧基苯酚，在脂肪中添加浓度为2.5或5.0 ppb的八氯和九氯-2-苯氧基苯酚，随后进行分析，八氯-2-苯氧基苯酚的平均回收率为91%，九氯-2-苯氧基苯酚的平均回收率为97%。
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