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提出了以ｐＨ ９．２０的２０ ｍ ｍ ｏｌ／Ｌ硼酸缓冲溶液、ｐＨ ６．８６的２０ ｍ ｍ ｏｌ／Ｌ磷酸缓冲溶液和ｐＨ ２．０５ 的５０ｍ ｍ ｏｌ／Ｌ磷酸缓冲溶液作为背景电解质分析９种头孢菌素类抗生素药物纯度的毛细管区带电泳方法。用内部归一化法定量，方法简单快速。讨论了方法的优点和局限性。
A 20 m mol / L borate buffer solution of pH 9.20, a 20 m mol / L phosphate buffer solution of pH 6.86 and a 50 m mol / L phosphate buffer solution of pH 2.05 as a background electrolyte analysis Capillary zone electrophoresis for the determination of nine cephalosporin antibiotics. Using internal normalization method, the method is simple and fast. The advantages and limitations of the method are discussed.