FU Guang-xiang,ZHANG Ting,PENG Yu-lin,LÜ Yin-ni.Determination of Three Quinolone Antibiotics in Biological Samples by High Performance Liquid Chromatography Coupled with Electromembrane Extraction[J].Journal of Instrumental Analysis,2024,43(09):1467-1473.
FU Guang-xiang,ZHANG Ting,PENG Yu-lin,LÜ Yin-ni.Determination of Three Quinolone Antibiotics in Biological Samples by High Performance Liquid Chromatography Coupled with Electromembrane Extraction[J].Journal of Instrumental Analysis,2024,43(09):1467-1473. DOI: 10.12452/j.fxcsxb.24051748.
Determination of Three Quinolone Antibiotics in Biological Samples by High Performance Liquid Chromatography Coupled with Electromembrane Extraction
An analytical method was developed for the rapid determination of three quinolone antibiotics in urine and fish tissues by electromembrane extraction(EME) coupled with high performance liquid chromatography(HPLC). The urine was diluted,and the fish meat was minced and extracted with pH 5.0 phosphate buffer,followed by EME. The receiving solvent for drug extraction was determined to be 10 mmol/L hydrochloric acid at pH 2.0,extraction voltage of 35-70 V,extraction time of 20 min,and HPLC detection. Results showed that the three quinolone antibiotics in urine and fish meat showed good linearity in their respective mass concentration ranges with correlation coefficients(
r
2
) greater than 0.99. The limits of detection and limits of quantification of the drugs ranged from 2.0 to 5.2 ng/mL and from 6.8 to 17.6 ng/mL in urine and from 12 to 36 ng/g and from 42 to 121 ng/g in fish,respectively. The recoveries of quinolone antibiotics in urine and fish matrix spiked at three different concentration levels were 67.7%-127% with the relative standard deviations(RSDs,
n
=6) of 4.2%-10%. The pretreatment method is simple,with low dosage of organic reagents,good purifi
cation effect and reproducibility,and can meet the requirements for the determination of the three quinolone antibiotics in urine and fish.