PMID- 17970118 OWN - NLM STAT- MEDLINE DCOM- 20100610 LR - 20181201 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 25 IP - 4 DP - 2007 Jul TI - [Simultaneous determination of residues of three fluoroquinolones in chicken using high performance liquid chromatography with post-column derivatization and terbium sensitized fluorescence]. PG - 553-6 AB - A method of high performance liquid chromatography with post-column derivatization and terbium sensitized fluorescence for simultaneous determination of residues of ciprofloxacin, norfloxacin and enrofloxacin in chicken was established, based on the effect that Tb3+ can sensibilize fluorescence of fluoroquinolones. Under the optimal chromatographic condition, three fluoroquinolones were separated on a C18 column with 0.05 mol/L acetic acid/acetate buffer-acetonitrile (89:11, v/v) as the mobile phase, and at a flow rate of 0.8 mL/min; then were derivatized with 8 x 10(-5) mol/L Tb3+ at 40 degrees C, and at a flow rate of 0.5 mL/min; finally were detected using a fluorescence detector (lamda(ex) = 271 nm, lamda(em) = 545 nm). The recoveries of three fluoroquinolones ranged from 66.3%-88.0% at the added levels of 1.0, 10.0, 50.0, and 100.0 ng/g, and the relative standard deviations (RSDs) were less than 15.0%. The linear range for quantitative analysis was between 0.1 and 500 ng/mL. All the RSDs of the inter-day and intra-day analyses were less than 13.0%. The detection limits were 0.05 ng/g for ciprofloxacin and norfloxacin and 0.08 ng/g for enrofloxacin. The method is sensitive for the determination of multi-residues of fluoroquinolones in chicken. FAU - Qi, Kezong AU - Qi K AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China. jwccqkz@ahau.edu.cn FAU - Zhu, Liangqiang AU - Zhu L FAU - Sun, Guoren AU - Sun G FAU - Shi, Zuhao AU - Shi Z FAU - Peng, Kaisong AU - Peng K LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Fluoroquinolones) RN - 06SSF7P179 (Terbium) RN - 3DX3XEK1BN (Enrofloxacin) RN - 5E8K9I0O4U (Ciprofloxacin) RN - N0F8P22L1P (Norfloxacin) SB - IM MH - Animals MH - Chickens/*metabolism MH - Chromatography, High Pressure Liquid/*methods MH - Ciprofloxacin/analysis MH - Enrofloxacin MH - Fluoroquinolones/*analysis MH - Norfloxacin/analysis MH - Reproducibility of Results MH - Terbium/*chemistry EDAT- 2007/11/01 09:00 MHDA- 2010/06/11 06:00 CRDT- 2007/11/01 09:00 PHST- 2007/11/01 09:00 [pubmed] PHST- 2010/06/11 06:00 [medline] PHST- 2007/11/01 09:00 [entrez] PST - ppublish SO - Se Pu. 2007 Jul;25(4):553-6.