Simple Determination of Residual Anticoccidial Drugs(Diclazuril and Nicarbazin) in Chicken Tissues by HPLC.

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  • ＨＰＬＣによる鶏組織中の残留抗コクシジウム剤（ジクラズリルおよびナイカルバジン）の簡易分析法
  • HPLC ニ ヨル ケイ ソシキ チュウ ノ ザンリュウ コウコクシジウムザイ ジクラズリル オヨビ ナイカルバジン ノ カンイ ブンセキホウ

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A simple and rapid determination of anticoccidial drug residues, diclazuril (DCZ) and nicarbazin (NCZ), in chicken tissues has been developed. DCZ and NCZ were extracted with acetonitrile from chicken liver, muscle, and fat. The extract was rinsed with n-hexane saturated with acetonitrile and then evaporated. The residue was dissolved in 1.4 mL of acetonitrile-methanol (1 : 1), then 1.0 mL of n-hexane saturated with acetonitrile-methanol (1 : 1) was added, and the mixture was partitioned by the addition of 0.6 mL of water. DCZ and NCZ in the aqueous layers were determined by HPLC on an Xterra RP-18 column with acetonitrile-0.5% ammonium acetate containing 0.01 mol/L tetra-n-butylammonium hydrogen sulfate (43 : 57) as the mobile phase. The mean recoveries (n=5) of DCZ and NCZ spiked in chicken tissues at the maximum residue levels were 92.0∼95.6% (CV 2.4∼3.0%) and 87.3∼89.4% (CV 1.7∼2.8%), respectively. The detection limits of DCZ and NCZ were 0.01 and 0.004 μg/g, respectively.

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