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http://dx.doi.org/10.3839/jabc.2010.005

Simultaneous Analytical Method for the Neomycin, Gentamicin Residues in Seafood  

Hong, Young-Min (Dongil SHIMADZU Corp. R&D Center)
Lee, Seok-Ki (Dongil SHIMADZU Corp. R&D Center)
Kim, Hyoung-Ah (Department of Preventive Medicine, The Catholic University of Korea)
Hwang, Yu-Kyung (Department of Preventive Medicine, The Catholic University of Korea)
Publication Information
Journal of Applied Biological Chemistry / v.53, no.1, 2010 , pp. 25-30 More about this Journal
Abstract
This paper describes a simultaneous method for the determination of two aminoglycosides (neomycin and gentamicin) using solid phase extraction followed by liquid chromatograph-mass spectrometry. The extract was applied to an WCX and HLB solid phase extraction cartridge. The cartridges were washed with water and methanol, and analytes were eluted with TCA buffer-acetonitrile mixture. The aminoglycosides were separated by ion-pairing reversed phase mode prior to ESI-LC/MS. Under the conditions applied neomycin was almost separated from all the gentamicin compounds. No interfering peaks from endogenous compounds of matrix were noted at the elution position of the analytes. Recoveries of neomycin fortified at levels of 0.25, 0.5, 1.0 and 2.0 mg/kg seafood samples ranged from 92 to 115%. Recoveries of gentamycin fortified at levels of 0.05, 0.1, 0.2, 0.4 mg/kg seafood samples ranged from 99 to 116%. Method detection limits in four seafood sample matrices were between 0.002 and 0.033 mg/kg.
Keywords
aminoglycoside; mass spectrometry; seafood; veterinary drug;
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