| 葱蒜类蔬菜多残留测定高背景干扰问题的研究 |
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| 引用本文： | 张君,马莲菊. 葱蒜类蔬菜多残留测定高背景干扰问题的研究[J]. 沈阳师范大学学报(自然科学版), 2007, 25(2): 224-228 |
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| 作者姓名： | 张君 马莲菊 |
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| 作者单位： | 1. 沈阳市农业检测中心,辽宁,沈阳,110034
2. 沈阳师范大学,化学与生命科学学院,辽宁,沈阳,110034 |
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| 摘 要： | 通过对葱蒜类蔬菜进行每100.0 g样品加入85%磷酸6 mL和微波(500 W)处理1.5min的特殊预处理,配合固相萃取的前处理方法,采用气相色谱-质谱联用法测定76种农药500×10-9水平上的添加回收率.结果表明上述2种预处理能够去除高背景干扰,得到良好的回收率.2者比较,加磷酸的效果略好.
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| 关 键 词： | 葱蒜类蔬菜 农药多残留 高背景 |
| 文章编号： | 1673-5862(2007)02-0224-05 |
| 修稿时间： | 2006-10-09 |
Problem of High Level Background Interference on Multiresidue Determination of Alliaceous Vegetables |
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| ZHANG Jun,MA Lian-ju. Problem of High Level Background Interference on Multiresidue Determination of Alliaceous Vegetables[J]. Journal of Shenyang Normal University(Natural Science Edition), 2007, 25(2): 224-228 |
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| Authors: | ZHANG Jun MA Lian-ju |
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| Affiliation: | 1. Shenyang Agriculture Testing Center, Shenyang 110034, China; 2. College of Chemistry and Life Science, Shengyang Normal University, Shengyang 110034, China |
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| Abstract: | Cooperated with SPE,two special pretreatments were applied on alliaceous vegetable.One was adding 6 mL phosphoric acid(85%) in 100.0 g sample,the other was treated under 500 W microwave for 1.5 min.Recovery of 76 pesticides on 500 ppb level were detected by using GC/MS. Adding phosphoric acid was better,although both of these two treatments could eliminate the interference of high level background and obtain good recovery. |
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| Keywords: | alliaceous vegetables pesticides multiresidue high level background |
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