论文部分内容阅读
在载气、固定液、检测器相同的条件下 ,利用直径 0 5 3mm内涂 0 7μm膜厚的阿皮松 (Apiezon)L固定液的大孔径毛细管柱分析有机磷杀虫剂 ,其分析时间 ,可比 2m长 ,含 5 % (质量分数 )固定液的填充柱时间快 1倍以上。使用 0 5 3mm大孔径毛细管柱分析有机磷杀虫剂时 ,可以使某些热稳定性较差的化合物避免发生分解现象 ,如辛硫磷 ,甲基辛硫磷 ,二溴磷 ,敌百虫。内径 0 5 3mm固定液膜厚为 1 0mm以上的 1 0m长大孔径毛细管柱很有希望代替常规使用的长约 2m ,固定液为 3%～ 5 % (质量分数 )不锈钢柱 (3mm外径 )或玻璃填充柱 (2mm内径 )
Under the same conditions of carrier gas, fixative and detector, the organophosphorus insecticide was analyzed by using a large aperture capillary column with a diameter of 0 5 3mm coated with Apiezon L fixing solution having a thickness of 0 7μm. The analysis time , Can be more than 2m long, with 5% (mass fraction) fixed liquid packed column time more than doubled. Analysis of organophosphorus insecticides using a 0 5 3mm large-pore capillary column can prevent some compounds with poor thermal stability from decomposition, such as phoxim, phoxim, dibromophosphate, trichlorfon . Diameter 0 5 3mm fixed 10m long membrane thickness of 10mm long large-aperture capillary column is expected to replace the conventional use of about 2m, fixed solution of 3% to 5% (mass fraction) stainless steel column (3mm outer diameter) Or glass packed column (2mm inner diameter)