资源类型

期刊论文 1

年份

2013 1

关键词

检索范围:

排序: 展示方式:

Fast determination of tobramycin by reversed-phase ion-pair high performance liquid chromatography with

Liang ZHU, Jingkang WANG

《化学科学与工程前沿(英文)》 2013年 第7卷 第3期   页码 322-328 doi: 10.1007/s11705-013-1348-z

摘要: A simple and direct method without a derivation step for routine analysis of tobramycin has been developed. This method used reversed-phase ion-pair high performance liquid chromatography (HPLC) with a refractive index (RI) detector and a C18 column which is stable at pH above 1.00. The presence of 4.50 mg·mL trifluoroacetic acid (TFA) in the mobile phase improved the protonation of tobramycin and the formation of ion-pairs, and thus reduced its hydrophility. This unique separation–detection combination showed good linearity with correlation coefficients 0.9996 in the concentration range of 0.25–2.50 mg·mL . The quantitation limit and detection limit were determined to be 0.23 mg·mL and 0.071 mg·mL , respectively. Tobramycin was recovered in 98.00%, 98.84% and 99.64% for tobramycin solutions at concentrations of 2.25 mg·mL , 1.50 mg·mL and 0.75 mg·mL , respectively. The relative standard deviations for six spiked samples ranged from 0.20% to 2.40%, indicating a good reproducibility of this method.

关键词: tobramycin     aminoglycoside     refractive index detector     high-performance liquid chromatography     ion-pairing    

标题 作者 时间 类型 操作

Fast determination of tobramycin by reversed-phase ion-pair high performance liquid chromatography with

Liang ZHU, Jingkang WANG

期刊论文