|
Determination of Four Cephalosporin in Water by High Performance Liquid Chromatography with Hollow Fiber-based Liquid Phase Microextraction |
|
View Full Text Download reader |
DOI: |
KeyWord:hollow fiber based liquid phase microextraction ionic liquid high performance liquid chromatography cephalosporin water |
Author | Institution |
ZHONG Jia-sheng,MENG Bi-zhen,CHEN Zhen-yang,ZENG Huan-xiang,ZHOU Xiang-rong |
Sinopharm ZhijunShenzhen Pharmaceutical Co.,Ltd. |
|
Hits: 1983 |
Download times: 806 |
Abstract: |
A method of high performance liquid chromatography with hollow fiber-based liquid phase microextraction(HF-LPME/HPLC) was developed for the analysis of four trace cephalosporin antibiotics,i.e.cefazolin(CZO),cefuroxime(CXM),ceftazidime(CAZ) and cefoxitin(FOX) in water.The optimized conditions were as follows:1-octyl-3-methylimidazolium hexafluorophosphate([Omin]PF6) added with 10% trioctylphosphine oxide(TOPO) was selected as extraction solvent,in which TOPO was used for assisted extraction.The pH of sample solution was adjusted to 2.5.The extraction was conducted for 20 min at 30 ℃,with a stirring rate of 600 r/min.Four cephalosporin antibiotics were separated within 7 min on an Agilent Poroshell 120 EC-C18 column(100 mm×4.6 mm,2.7 μm) using 0.05 mol/L sodium acetate buffer(pH 4.0)-acetonitrile(9∶1,volume ratio) as mobile phase.Results showed that there were good linear relationships for four cephalosporin with the enrichment factors of 45-78 and the limits of detection(LOD) of 0.2-0.7 ng/mL.Recoveries for the four analytes ranged from 83.2% to 102%,with relative standard deviations(RSD) of 2.0%-9.8%.With the advantages of simple operation,high efficiency,low cost,low solvent consumption,environmental protection and high sensitivity,the proposed method was suitable for the determination of four trace cephalosporin residues in water. |
Close |
|
|
|