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Simultaneous Determination of Eleven Quinolones Antibacterial Residues in Marine Products and Animal Tissues by Liquid Chromatography with Fluorescence Detection

以高效能液相層析螢光法同時分析畜禽水產品中11種喹諾酮類抗菌劑殘留之研究

摘要


建立簡單及有效之多重分析方法檢測雞肉、豬肉、魚及蝦中11種喹諾酮抗菌劑殘留(marbofloxacin、norfloxacin、ciprofloxacin、lomefloxcain、danofloxacin、enrofloxacin、sarafloxacin、difloxacin、oxolinic acid、nalidixicacid、flumequine)。樣品以0.3%偏磷酸∶氰甲烷(1:1, v/v)萃取,經減壓濃縮去除乙腈後注入OASIS HLB固相萃取匣淨化。高效能液相層析分析條件使用以symmetry column C-18(250 mm×4.5 mm i.d., 5 μm)管柱分離,配合3段式程式螢光偵檢器偵測,移動相由0.1%甲酸水溶液及乙腈組成進行梯度沖堤。空白肌肉組織添加3種濃度(25、50及250 ng/g;除了DAN添加濃度爲6.25, 12.5及62.5 ng/g)建立線性、偵測極限、定量極限、精密度及精確度之確效試驗。11種喹諾酮抗菌劑之添加試驗之平均回收率爲71.7至105.3%,定量極限爲5.0至28.0 ng/g。結果顯示本方法簡單、快速、敏感且適合例行性分析工作。

並列摘要


A simple and efficient multiresidue method was developed for determining 11 quinolones (QNs; marbofloxacin, norfloxacin, ciprofloxacin, lomefloxacin, danofloxacin, enrofloxacin, sarafloxacin, difloxacin, oxolinic acid, nalidixic acid and flumequine) in chicken, pork, fish and shrimp. The analytes were extracted with 0.3% metaphosphoric acid and acetonitrile (1:1, v/v), followed by a HLB cartridge clean-up procedure. The HPLC separation was carried out on a symmetry column C-18 (250 mm×4.5 mm i.d., 5 μm) with linear gradient elution of 0.1% formic acid and acetonitrile as mobile phase and programmable fluorescence detection. The method was validated by spiking blank animals tissues at three different levels (25, 50 and 250 ng/g; except 6.25, 12.5 and 62.5 ng/g for DAN) while the linearity, detection limit, quantification limit, precision and accuracy were checked. Mean recoveries of 11 QNs from edible animal tissues were 71.7-105.3%. The limits of quantification in different muscle tissues ranged from 5.0 to 28.0 ng/g. The results showed this method was simple, rapid, sensitive and suitable for routine tests.

並列關鍵字

Quinolones residue HPLC

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