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  • Title: [Determination of avermectin, diclazuril, toltrazuril and metabolite residues in pork by high performance liquid chromatography-tandem mass spectrometry].
    Author: Gong X, Sun J, Dong J, Yu J, Wang H.
    Journal: Se Pu; 2011 Mar; 29(3):217-22. PubMed ID: 21657050.
    Abstract:
    A method for the determination of avermectin, ivermectin, doramectin, moxidectin, eprinomectin, diclazuril, toltrazuril and its two metabolite residues in pork was developed using QuEChERS method with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The sample was extracted with acetonitrile and purified through QuEChERS method using ODS as the sorbent. The target compounds were separated on a Venusil ASB C18 column (150 mm x 2.1 mm, 3.0 microm) and detected by HPLC-MS/MS. The linear ranges were 0.005 - 0.2 mg/L and the correlation coefficients were all above 0.990. The average recoveries and the relative standard deviations ranged from 73.2% to 91.5% and from 12% to 17% at the spiked levels of 0.005, 0.01 and 0.02 mg/kg for the 9 analytes in pork matrix. This method is reliable, and suitable for the determination of the residues of avermectin and related compounds in pork.
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