Determination of the Residues of Fenamidone and MPID in Animal Source Foods by HPLC-MS
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Abstract:
The samples were extracted with acetonitrile, purified by activated PS-DVB and carbon column, and analyzed on C18 column by using a gradient elution using acetonitrile (A)- 5 mmol/L ammonium acetate methanol aqueous solution (B) (V:V=40:60) as mobile phase. The calibration curve presented a good linear relationship between the peak areas and concentrations in the range of 0.05~0.8 μg/mL fenamidone and 0.5~8.0 μg/mL MPID, with correlation coefficients more than 0.999. The average recoveries of standard addition at this concentration level ranged from 82.09% to 109.16%, and the relative standard deviation (RSD) was in the range of 2.46% to 7.89%. The limits of quantification of fenamidone and MPID in animal source foods were 2.0 μg/kg and 20.0 μg/kg. It was suitable for determination of fenamidone and MPID residues in animal source foods with high sensitivity and selectivity.
