| 动物可食性组织中克拉维酸残留HPLC-MS/MS检测方法 |
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| 引用本文： | 李帅鹏,黄显会,杨刚,郭春娜.动物可食性组织中克拉维酸残留HPLC-MS/MS检测方法[J].中国农业科学,2013,46(23):5012-5019. |
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| 作者姓名： | 李帅鹏 黄显会 杨刚 郭春娜 |
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| 基金项目： | 2010 年农业行业标准制修订项目（201012147） |
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| 摘 要： | 【目的】建立动物可食性组织中克拉维酸残留检测的高效液相色谱-串联质谱方法。【方法】1 g组织样品用3 mL 0.01 mol•L-1乙酸铵和3 mL乙腈提取后，经二氯甲烷反相提取净化，取水相定容到4 mL，正己烷除脂后上机检测。流动相为乙腈和0.1%甲酸水，梯度洗脱，经Luna 5μ C8色谱柱分离，采用电喷雾电离，多反应监测负离子模式对克拉维酸进行定量分析。【结果】采用基质匹配法对组织中克拉维酸的含量进行标准校正，克拉维酸质量浓度在5—500 μg•L-1范围内与峰面积间呈现良好的线性关系（r＞0.999）；组织中加标样品的检出限（按信噪比S/N≥3计）为10 μg•kg-1，定量限（按信噪比S/N≥10计）为20 μg•kg-1。在定量限、1/2最高残留限量、最高残留限量、2倍最高残留限量4个添加水平下，组织中克拉维酸的平均回收率为76.39%—89.26%，日间相对标准偏差为1.89%—6.20%。【结论】该方法可用于动物可食性组织中克拉维酸残留的分析检测。
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| 关 键 词： | 高效液相色谱-串联质谱 克拉维酸 可食性组织 残留 |
| 收稿时间： | 2013-05-13 |
Determination of Clavulanic Acid Residue in Edible Tissues of Animals by High Performance Liquid Chromatography-Tandem Mass Spectrometry |
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| LI Shuai-Peng,HUANG Xian-Hui,YANG Gang,GUO Chun-Na.Determination of Clavulanic Acid Residue in Edible Tissues of Animals by High Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Scientia Agricultura Sinica,2013,46(23):5012-5019. |
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| Authors: | LI Shuai-Peng HUANG Xian-Hui YANG Gang GUO Chun-Na |
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| Institution: | National Reference Laboratory of Veterinary Drug Residues，College of Veterinary Medicine，South China Agricultural University，Guangzhou 510642 |
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| Abstract: | 【Objective】A confirmatory method was developed for the determination of clavulanic acid (CLAV) residue in edible tissues of animals by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). 【Method】 One gram tissues were extracted by 3 mL 0.01 mol•L-1 ammonium acetate solution and 3 mL acetonitrile，a back-extraction of the acetonitrile with dichloromethane，aqueous layer was diluted to 4mL，and the sample was determined by HPLC-MS/MS after defatted with N-hexane. The chromatographic separation was achieved on a Luna 5μ C8 column using 0.1% formic acid in water and acetonitrile as mobile phases with gradient elution. The identification of CLAV was carried out by MS/MS equipped with electrospray ionization in negative scanning and multiple reaction monitoring (MRM) modes. 【Result】Matrix-matched calibration standard was used for the quantification. Good linearity was achieved with correlation coefficients more than 0.999 for all analytes in the concentration of 5-500 μg•L-1. The limit of detection (LOD，S/N≥3) was 10 μg•kg-1 in tissues, and the limit of quantification (LOQ，S/N≥10) was 20 μg•kg-1. The mean recoveries at the four spiked levels of LOQ, 1/2MRL (the maximum residue limit), MRL and 2MRL were in the range of 76.39%-89.26% , with the inter-day relative standard deviations (RSD) of 1.89%-6.20%. 【Conclusion】In conclusion, the established method can be applied for the determination of CLAV residues in edible tissues of animals. |
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| Keywords: | high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) clavulanic acid edible tissues residue |
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