Agilent7890B1.5%OV-17+2%QF-1/Chromosorb AW DMCS玻璃柱2m*3mm

食品中六六六、滴滴涕残留量的测定,国内大多采用磺化法净化.但此法碰到主要问题是乳化现象严重,有时甚至变成糊状,很难静置分层,若延长净化时间又影响结果的准确,特别是使β-666,δ-666结果偏低.为了防止乳化现象。

浩瀚色谱（山东）应用技术开发有限公司建立同时测定蔬菜、水果、茶叶、食用植物油等食品中六六六、滴滴涕和三氯杀螨醇的方法。方法:先用有机溶剂将食品中六六六、滴滴涕和三氯杀螨醇等残留物提取出来,再经浓硫酸磺化后采用气相色谱法测定。结果:该方法能很好地将4种六六六异构体、4种滴滴涕异构体和三氯杀螨醇分离开,三氯杀螨醇的加标回收率在84.0%~95.0%,相对测量不确定度小于10%,*低检出量为0.01 ng。结论:该方法能同时测定食品中六六六、滴滴涕和三氯杀螨醇残留量。

名称：安捷伦7890B玻璃柱
规格：2m*1/4，80-100目
型号：1.5%OV-17+2%QF-1/Chromosorb AW DMCS（80-100目）
编号：20220726001
*高温度：240°C
 
For the determination of the residues of DDT in food, sulfonation method is mostly used in domestic purification. But the main problem with this method is that the phenomenon of emulsification is serious, sometimes it even becomes paste, and it is difficult to stand for stratification. If the purification time is prolonged It also affects the accuracy of the results, especially the results of β-666 and δ-666 are low. In order to prevent emulsification.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a method for the simultaneous determination of 666, DDT and Dicofol in vegetables, fruits, tea, edible vegetable oils and other foods. Methods: The residues of hexahexahexanol, DDT and dicofol in food were extracted with organic solvent, then sulfonated with concentrated sulfuric acid and determined by gas chromatography. Results: The method could well separate four hexahexahexahexaisomers, four DDT isomers and dicofol. The recovery rate of dicofol was between 84.0% and 95.0%, and the relative measurement uncertainty was less than 10%. , the minimum detection amount was 0.01 ng. Conclusion: This method can simultaneously determine the residues of hexahexahexanol, DDT and dicofol in food.

Name: Agilent 7890B glass column
Specifications: 2m*1/4, 80-100 mesh
Model: 1.5%OV-17+2%QF-1/Chromosorb AW DMCS (80-100 mesh)
No.: 20220726001
Maximum temperature: 240°C