| 分散液液微萃取-气质联用法测定牛奶中酰胺类除草剂 |
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| 引用本文： | 苗雪雪,杨愿愿,刘登彪,杨晓云,徐汉虹.分散液液微萃取-气质联用法测定牛奶中酰胺类除草剂[J].华南农业大学学报,2015,36(2):43-48. |
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| 作者姓名： | 苗雪雪 杨愿愿 刘登彪 杨晓云 徐汉虹 |
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| 作者单位： | 天然农药与化学生物学教育部重点实验室/华南农业大学资源环境学院,广东广州,510642 |
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| 基金项目： | 国家自然科学基金（31071702） |
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| 摘 要： | 【目的】实现牛奶中农药残留快速、准确的分析检测,更好地监督牛奶的食品安全问题.【方法】采用分散液液微萃取技术(DLLME)作为前处理方法,气相色谱-质谱联用(GC-MS)作为色谱分析仪器,建立了牛奶中4种酰胺类除草剂(甲草胺、乙草胺、丙草胺和异丙甲草胺)的残留分析方法.【结果和结论】对影响萃取效率的因素进行了分析和优化,最终选取40μL四氯化碳作为萃取剂,1 000μL甲醇作为分散剂,提取时间设置为1.0 min.在最优的试验条件下,4种酰胺类除草剂质量浓度在0.05~5.00 mg·L-1范围内均具有良好的线性相关,相关系数≥0.997 8.该方法灵敏度高,检出限在0.8~1.4μg·L-1(S/N=3)范围内.该方法应用于实际牛奶样品的检测,4种目标物的平均添加回收率为67.0%~105.7%,相对标准偏差(RSD)为1.6%~8.3%.
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| 关 键 词： | 分散液液微萃取 气相色谱-质谱联用 牛奶 酰胺类除草剂 |
| 收稿时间： | 2013/10/29 0:00:00 |
Determination of the amide herbicides in milk using dispersive liquid-liquid microextraction prior to GC-MS |
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| MIAO Xuexue,YANG Yuanyuan,LIU Dengbiao,YANG Xiaoyun and XU Hanhong.Determination of the amide herbicides in milk using dispersive liquid-liquid microextraction prior to GC-MS[J].Journal of South China Agricultural University,2015,36(2):43-48. |
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| Authors: | MIAO Xuexue YANG Yuanyuan LIU Dengbiao YANG Xiaoyun and XU Hanhong |
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| Institution: | Key Laboratory of Natural Pesticide and Chemical Biology of Ministry of Education/ College of Resources and Environment, South China Agricultural University,;Key Laboratory of Natural Pesticide and Chemical Biology of Ministry of Education/ College of Resources and Environment, South China Agricultural University,;Key Laboratory of Natural Pesticide and Chemical Biology of Ministry of Education/ College of Resources and Environment, South China Agricultural University,;Key Laboratory of Natural Pesticide and Chemical Biology of Ministry of Education/ College of Resources and Environment, South China Agricultural University,;Key Laboratory of Natural Pesticide and Chemical Biology of Ministry of Education/ College of Resources and Environment, South China Agricultural University, |
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| Abstract: | |
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| Keywords: | dispersive liquid-liquid microextraction gas chromatography-mass spectrometry milk amide herbicide |
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