6%戊唑醇微乳剂

本文介绍了6％戊唑醇微乳剂配方的组成和制备方法，并对其性能和田间药效进行了测试和试验。     

30%毒死蜱微乳剂的研究、性状及药效

本文介绍了30％毒死蜱微乳剂配方的组成和制备方法．并对其性能和田间药效进．行了测试和试验。     

Fingerprint of GBE by Microemulsion High Performance Thin-layer Chromatography

Twelve types of gingko flavonoids were separated with SDS/n -C4 HgOH/n- C7 Hls/H2O microernlusion as developer on polyamide film. The polarity of the microemulsion was regulated through adding or reducing water. Compared with general mobile phase, the sensitivity of detection was improved markedly and the test results were satisfied. By means of HPTLC, fingerprint was argued on gingko flavonoids. It can meet the needs of simple and convenient, reasonable standard quality control methods.     

纳米CuI催化偶联反应合成二苯醚类农药中间体

二苯醚是一种重要的农药中间体,通过W/O微乳法,制备出形貌均一的球状纳米CuI,并应用于催化C-O交叉偶联反应中,在温和的反应条件下,合成了具有优良产率的二苯醚类化合物,该方法可在今后的农药合成中应用。     

W/O微乳液体系中SA和MS清除·O_2~-的研究

以水溶液体系作为对照,利用分光光度法研究了W/O型微乳液体系中水杨酸（SA）和水杨酸甲酯（MS）清除超氧阴离子自由基（·O2-）的性能.结果发现,在水浴时间为20min、pH值为8.20和邻苯三酚加入量适宜的情况下,W/O微乳液体系中SA、MS对·O2-的清除率分别可达72.92%、81.47%.微小的pH值变化会引起邻苯三酚自氧化速率的显著变化,电解质溶液对其也有明显的影响,但对SA、MS清除·O2-的能力影响不大.     

17O-核磁共振法研究农药微乳剂浊点与 其组份之间的相关性

农药微乳剂浊点是微乳剂的主要质量技术指标之一。研究了3种不同种类农药的微乳剂组份与浊点的关系,并利用17O-核磁共振(17O-NMR)方法对其机理进行了探究。研究表明:浊点与表面活性剂、助表面活性剂与水之间形成的氢键强度成正相关;随着水质硬度的上升,浊点下降。建议选用亲水性强的表面活性剂和极性较强的助表面活性剂来配制微乳剂,同时为了节约成本和便于工厂生产,可采用自来水来配制农药微乳剂,而采取其他措施来提高农药微乳剂的浊点。     

2.5%氟铃脲·甲氨基阿维菌素苯甲酸盐微乳剂的研制

本文介绍2.5%氟铃脲·甲维盐微乳剂的研制,简述了该微乳剂的特点、配方选择、贮藏稳定性等试验结果,表明该微乳剂较乳油成本低、药效好、使用安全,具有良好开发前景。     

山楂黄酮的薄层色谱分离鉴定研究

研究了山楂（山里红Crataegus pinnatifida Bge.var major N.E.Br)黄酮类化合物新的薄层色谱分离鉴定方法。以十二烷基硫酸钠-正丁醇-正庚烷-水微乳液为展开剂，利用聚酰胺薄层色谱法能使山楂黄酮完全分离。从山楂叶中分离得到7个黄酮斑点，山楂果中得到7个黄酮斑点，但二者的斑点不完全相同。与用正丁醇：乙酸：水4：1：5为展开剂的聚酰胺薄层色谱法比较发现，微乳薄层色谱法检测灵敏度高、分离效果理想。     

Content Determination of Ivermectin in the Ivermectin Microemulsion Injection

In order to establish the determination method of ivermectin (IVM) in the ivermectin microemulsion injection by high performance liquid chromatography (HPLC), Hypersil ODS2 colunm (5 μm,4.6 mm×250 mm) was used in this study. The mobile phase composed of methanol, acetonitrile and water (35:60:5,V/V/V) at a flow rate of 1 mL/min. The detection wave length was set at 244 nm and the column temperature was 30 ℃. The results showed that the HPLC system suitability of IVM was good. A good linear correlation of IVM was observed within the concentration range 80 to 320 μg/mL, and the average recovery rate was 101.90%±2.94% with RSD was 2.88%, the regression equation was Y=22 700X+2 510 (R²=0.9998). The RSD of IVM content in ivermectin microemulsion injection was 1.86%. The method was accurate and reliable,reproducible,easy to operate, which could be used in new type of ivermectin microemulsion injection. The method could be used as the basis of quality control and establishing a quality standard, and to provide basis for quality evaluation, also can provide reliable reference for safe veterinary clinical application in the future.     

杀虫单微乳剂提高对小菜蛾和水稻纵卷叶螟防治效果的原理

用Zisman方法测定水稻和甘蓝叶片的临界表面张力分别为36.70mN/m和36.40mN/m。用GB5549－90方法测定杀虫单微乳剂推荐剂量药液的表面张力为30.02mN/m左右,小于水稻和甘蓝苞菜叶的临界表面张力,药液中表面活性剂达到或超过了临界胶束浓度,室内和田间试验表明,杀虫单微乳剂提高了对水稻纵卷叶螟和甘蓝小菜蛾的防治效果,减少50％左右的杀虫单用量。