Stout S J, Steller W A, Tondreau R E, Manuel A J, daCunha A R
J Assoc Off Anal Chem. 1985 Jan-Feb;68(1):71-5.
Residue methodology is described for the determination of AC 217,300 residues in pasture grass and crop samples. After extraction and subsequent cleanup on an XAD-2 column, residues of AC 217,300 are determined by liquid chromatography (LC), using a reverse phase paired-ion chromatographic system and detection at 300 nm. The method has a validated limit of sensitivity of 0.05 ppm with corresponding control values for the commodities analyzed of less than 0.01 ppm. Apparent residues over 0.05 ppm can be confirmed by either gas chromatography with an electron capture detector (GC-EC) or gas chromatography-negative ion chemical ionization mass spectrometry (GC-NICI). The direct GC-NICI method circumvents the need for sample cleanup on the XAD-2 column, and offers a greatly simplified procedure that is useful for screening samples. Recoveries of AC 217,300 from the commodities analyzed have been satisfactory with all methods of analysis.
描述了用于测定牧草和作物样品中AC 217,300残留量的残留分析方法。在XAD - 2柱上进行萃取和后续净化后，采用反相离子对色谱系统并在300 nm波长处检测，通过液相色谱法（LC）测定AC 217,300的残留量。该方法的有效灵敏度限值为0.05 ppm，所分析商品的相应对照值小于0.01 ppm。超过0.05 ppm的表观残留量可通过带有电子捕获检测器的气相色谱法（GC - EC）或气相色谱 - 负离子化学电离质谱法（GC - NICI）进行确认。直接GC - NICI方法无需在XAD - 2柱上进行样品净化，提供了一种大大简化的程序，可用于筛选样品。所有分析方法对所分析商品中AC 217,300的回收率均令人满意。
