气相色谱/质谱(GC/MS)测定蔬菜中甲基对硫磷农药和呋喃丹的优化
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X592

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国土资源部地质大调查子项目资助项目(121201511202)


Optimization of Determination Method of Parathion-methyl and Carbofuran in Vegetables by GC/MS
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    摘要:

    利用气相色谱/质谱(GC/MS)同时测定及确定蔬菜中甲基对硫磷农药和克百威(呋喃丹)的残留量。研究了振荡提取时间、提取剂用量、盐加入量、浓缩条件等操作条件对分析方法的影响。得到的优化分析条件如下:振荡提取时间为90 min、提取剂用量为70 mL、盐加入量为3 g、浓缩条件为温度50℃低压0.09 atm;该方法的相对标准偏差<10%,样品的加标回收率为甲基对硫磷82.5%、克百威为93.5%。本方法可以满足这2种杀虫剂在蔬菜中的检测要求。

    Abstract:

    Parathion-methyl and carbofuran residues in vegetables were determined by gas chronmatography-mass spectrometry(GC/MS).The effects of shaking and extraction time,extractant volume,salt content,preconcentration condition and other operation conditions on the analysis method were investigated.The results showed that optimal conditions were shaking and extraction for 90 min,extractant volume being 70 mL,3 g for salt concentration,preconcentration condition for 50℃ and low pressure 0.09 atm.The relative standard deviations of the method were below 10%.The recoveries percent of two insecticides were 83.5% for parathion-methyl and 93.5% for carbofuran.So the method can be used in analyzing them in vegetables.

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赖晶晶,罗丽,程温莹.气相色谱/质谱(GC/MS)测定蔬菜中甲基对硫磷农药和呋喃丹的优化[J].东北农业科学,2008,33(2):53-55.

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  • 收稿日期:2007-10-18
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  • 在线发布日期: 2025-01-06
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