固相萃取-气相色谱-质谱联用法测定蔬菜和小麦粉的恶霉灵
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(锦筑(烟台)食品研究开发有限公司,山东 烟台 264006)

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蔡柳燕 女 工程师 研究方向为食品安全与分析E-mail:cailiuyan@jinzhu-foods.com.cn

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Determination of hymexazol residues in vegetables and wheat flour by solid phase extraction-gas chromatography tandem-mass spectrometry
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(Jinzhu (Yantai) Food Research and Development Co. Ltd.,Shandong Yantai 264006,China)

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    摘要:

    建立一种应用气相色谱-质谱联用法测定蔬菜、小麦粉、糙米和西瓜中恶霉灵残留量。方法 前处理用乙腈提取,提取液使用固相萃取柱(2 g/10 ml)净化,最终提取液用硅烷化试剂(BSTFA)进行衍生化。气相方法以DB-5ms毛细管柱(30 m×0.25 mm,0.25 μm)处理,质谱选择离子监测模式(SIM)测定。结果 小麦粉和多种蔬菜的恶霉灵在0.010和0.100 mg/kg两个浓度水平的加标回收率范围为63%~101%,不同样品回收率RSD<10%,方法检出限为0.003 mg/kg,定量限为0.005 mg/kg。结论 该方法灵敏度高,重现性好,适用于快速检测蔬菜和小麦粉的恶霉灵残留量。

    Abstract:

    A method for determination of hymexazol in vegetables and wheat flour by SPE-GC-MS was investigated.Methods Hymexazol was extracted with acetonitrile. The extracts were purified by SPE(2 g/10 ml)and derivatized with BSTFA. The residues of hymexazol were estimated on a DB-5ms capillary column (30 m×0.25 mm, 0.25 μm) by GC/MS under selected ion monitoring mode. Results This method was validated at two different levels of 0.010 and 0.100 mg/kg. Average recoveries obtained from vegetables , wheat flour, brown rice and watermelon samples at two fortified levels were 63%-101% with relative standard deviations (RSD) of less than 10%. Limit of quantitation (LOQ) in these samples were 0.005 mg/kg. Conclusion The method was successfully applied to determine hymexazol in vegetable , wheat flour, brown rice and watermelon.

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蔡柳燕,梁春实,魏树龙,臧金海,马继军.固相萃取-气相色谱-质谱联用法测定蔬菜和小麦粉的恶霉灵[J].中国食品卫生杂志,2015,27(6):643-645.

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  • 收稿日期:2014-10-17
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  • 在线发布日期: 2015-12-14
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