Betker W R, Smead C F, Evans R T
J Assoc Off Anal Chem. 1976 Mar;59(2):278-83.
Determinations of the active ingredient in technical and formulated metribuzin were compared by gas-liquid chromatography (GLC) using various solvents, infrared (IR) spectrophotometry, and high-pressure liquid chromatography (HPLC). Ketones could not be used as a solvent for GLC analysis because of Schiff base formation. The GLC method using ethylene glycol monomethyl ether gave results about 1% higher for technical metribuzin than the other methods. GLC using methylene chloride solvent agreed with IR and HPLC results to within 0.4%. GLC using methylene chloride is the preferred method.
采用气液色谱法（GLC）、红外（IR）分光光度法和高压液相色谱法（HPLC），使用多种溶剂，对工业用和制剂用嗪草酮中的活性成分进行了测定比较。由于席夫碱的形成，酮类不能用作GLC分析的溶剂。使用乙二醇单甲醚的GLC法测得的工业用嗪草酮结果比其他方法高约1%。使用二氯甲烷溶剂的GLC法与IR和HPLC结果的误差在0.4%以内。使用二氯甲烷的GLC法是首选方法。
