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农药新剂型——微乳粒剂配制的可行性研究 总被引:3,自引:2,他引:1
以三唑磷为模式农药,研究了一种外观为颗粒状、用水稀释后成微乳液的农药新剂型——微乳粒剂配制的可行性。以乳状液的中位径(D50)为因变量,各表面活性剂用量为自变量,采用混料均匀试验设计并结合偏最小二乘回归法筛选表面活性剂品种;用比例法与对分法优化各表面活性剂用量;采用旋转挤压造粒法造粒。将筛选获得的农乳500与农乳602号用于配制15%三唑磷微乳粒剂,其乳状液外观为淡蓝色透明状,分散相颗粒迁移速度为0,且不同水质(水硬度:0~3 420 mg/L,水温:10~50 ℃)下乳液稳定性均合格;乳状液D50为54.2 nm,粒径分布范围为15.7~122 nm,粒径增大速率为0.01%/min;乳状液在相对离心力10 730×g下离心5 min未发生相分离。结果表明:该三唑磷微乳粒剂的乳状液为微乳液,微乳粒剂可以成功配制。 相似文献
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XING Shou-ye ZHOU Xu-zheng LI Bing NIU Jian-rong WEI Xiao-juan ZHANG Ji-yu 《中国畜牧兽医》2014,41(11):275-278
The study was aimed to observe the allergic reaction of ivermectin microemulsion injection on animals. Active systemic allergy test and passive cutaneous anaphylaxis test were carried out to study the allergic reaction of ivermectin microemulsion injection on Wistar rat and guinea pig, respectively, according to . The results showed that the allergic reaction of ivermectin microemulsion injection on Wistar rat and guinea pig were both negative. The study provided experiment evidences for the safety evaluation of ivermectin microemulsion. 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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利用2 %假蒟微乳剂对几种供试菌和试虫进行室内毒力测定。生长速率法进行杀菌剂毒力测定的试验结果表明:假蒟微乳剂对弯孢霉属的抑制效果最好,其EC50仅为3.26 mg/L,远低于对照药剂多菌灵的50.71 mg/L;胶孢炭疽菌对多菌灵表现极强的耐药性,而假蒟微乳剂则对胶孢炭疽菌抑制效果较好,其EC50仅为14.40 mg/L。浸渍法进行杀虫剂毒力测定的试验结果表明,假蒟对蚜虫的活性最高,其LC50为7.110 mg/L,对斜纹夜蛾、小菜蛾、菜青虫、橡副珠蜡蚧和椰心叶甲,均表现较好的杀虫活性。 相似文献
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