• 关键词：毛细管气相色谱  呋喃丹  ¹⁴)C标记呋喃丹  棉籽残留  土壤残留

• 基金项目：

• 李重九
• 北京农业大学应用化学研究所

• 钱传范
• 北京农业大学应用化学研究所

• 韩熹莱
• 北京农业大学应用化学研究所

• 摘要：使用OV-101玻璃毛细管柱气相色谱法测定棉籽和土壤中的呋哺丹和3-羟基呋喃丹,减少了农药在柱上的吸附和分解,分开了农药与植物中的干扰物质,减少了样本的前处理步骤,其回收率分别约为80％,变异系数小于20％。以¹⁴C标记呋喃丹测定各前处理步骤的损失率,表明农药的损失主要是由于酸解及固体物质的吸附。两年三地田间试验的结果说明,按照推荐药量在棉田使用呋喃丹,棉田和土壤中的残留均低于检测限。

• Abstract：Glass capillary column coated with OV-101 was used to analyse carbofuran and 3-hydroxy carbofuran residues in cotton seeds and soil. The technique depressed the thermal decomposition and the absorption of the pesticides during the separation and could separate the components of interest from the interfering substances. The average recoveries of carbofuran and 3-hydroxy carbofuran in cotton seeds and soil using the technique were around 80 percent and the primary loss of the pesticides during the analysis was contributed to acid hydrolysis and absorption, according to the results of experiments using 14C labeled pesticides.

• Key words：capillary column GC  carbofuran  pesticide residue  soil  cotton seeds.

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