Simultaneous determination of triclabendazole and its metabolites in bovine and goat tissues by liquid chromatography-tandem mass spectrometry.
A sensitive liquid chromatography-tandem mass spectrometry method for the simultaneous determination of triclabendazole, its main metabolites (triclabendazole sulphone and triclabendazole sulphoxide) and a marker residue (ketotriclabendazole) in bovine and goat muscle, liver, and kidney samples is developed and validated. Analyte extraction from samples is effectively performed using liquid-liquid extraction by acetonitrile. Chromatographic separation is performed on a C₁₈ reversed-phase column with gradient elution. The analytes are detected by tandem quadrupole mass spectrometry after positive electrospray ionization by multiple reaction monitoring. The limits of detection for analytes are found to be 0.25-2.5 μg/kg in muscle tissues and 1-10 μg/kg in liver and kidney tissues, respectively. The recoveries of edible bovine and goat tissues range from 84.9% to 109.5% when spiked at different levels with analytes, with relative standard deviations generally below 12.8%.
Cai
Chengyuan
C
Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 518 Ziyue Road, Minhang, 200241 Shanghai, People's Republic of China.
Zhang
Lifang
L
Xue
Feiqun
F
Qiu
Minqi
M
Zheng
Wenli
W
D000818:Animals; D000871:Anthelmintics / Q000032:analysis* / Q000378:metabolism*; D001562:Benzimidazoles / Q000032:analysis* / Q000378:metabolism*; D002417:Cattle; D002853:Chromatography, Liquid / Q000379:methods*; D006041:Goats; D007668:Kidney / Q000737:chemistry / Q000378:metabolism; D008099:Liver / Q000737:chemistry / Q000378:metabolism; D009132:Muscles / Q000737:chemistry / Q000378:metabolism; D053719:Tandem Mass Spectrometry / Q000379:methods*; D000077682:Triclabendazole
D000871:Anthelmintics; D001562:Benzimidazoles; D000077682:Triclabendazole