第 44 卷第 4 期 |  | Vol. 44 No. 4 | 2014 年 8 月 | Aug 2014 |
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所屬欄目:農藥及中間體
10%硫氟肟醚·甲基嘧啶磷微囊懸浮劑的制備及其藥效實(shí)驗 |
李 敏1,2,李 濤1,2,高恒旭1,2,陳九星1,2,虞孝云3
(1. 湖南化工研究院 國家農藥創(chuàng )制工程技術(shù)研究中心,湖南 長(cháng)沙 410014; 2. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室,湖南 長(cháng)沙 410014; 3. 湖南海利常德農藥化工有限公司, 湖南 常德 415001) |
摘 要:采用界面聚合法,以甲苯-2,4-二異氰酸酯為囊材,制備了硫氟肟醚·甲基嘧啶磷微囊懸浮劑。利用激光粒度分析儀、透射電鏡和液相色譜對制備的微囊懸浮劑粒子進(jìn)行了表征,室內藥效實(shí)驗考察了其對玉米象的活性。結果表明:10%硫氟肟醚·甲基嘧啶磷微囊粒徑約0.10~0.35 μm,且分布較為均勻;具有較高的包裹率和載藥量,硫氟肟醚的包裹率為90.34%,甲基嘧啶磷包裹率為90.92%;熱貯和低溫穩定性實(shí)驗結果表明微囊懸浮劑具有良好的熱貯和低溫穩定性。室內藥效實(shí)驗表明硫氟肟醚·甲基嘧啶磷微囊懸浮劑對儲糧害蟲(chóng)的有很好的活性。界面聚合法制備的硫氟肟醚·甲基嘧啶磷微囊懸浮劑環(huán)境友好,持效期明顯延長(cháng),適于儲糧害蟲(chóng)的防治。 |
關(guān)鍵詞:硫氟肟醚;甲基嘧啶磷;微囊懸浮劑;藥效 |
中圖分類(lèi)號:S482.3 文獻標識碼:A 文章編號:1009-9212(2014)04-0026-04 |
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The Preparation and Field Efficacy Trials of 10% Thiofluoximate·Pirimiphos-methyl Aqueous Suspension Concentrate |
LI Min1,2, LI Tao1,2, GAO Heng-xu1,2, CHEN Jiu-xing1,2, YU Xiao-yun3
(1. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China; 2. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China; 3. Hunan Haili Changde Pesticides & Chemicals Co., Ltd, Changde 415001, China) |
Abstract:The microcapsule of 10% thiofluoximate·pirimiphos-methyl CS with a mean diameter of 0.10~0.35 μm was prepared by interfacial polymerization and characterized by dynamic light scattering (DLS), transmission electron microscope(TEM)and high-performance liquid chromatography (HPLC). The activity against sitophilus zeamais was investigated and showed that the control effect on stored-product pests was well and the ef?cacy duration was significantly prolonged. The encapsulation rates of thiofluoximate and pirimiphos-methyl were 90.34% and 90.92%, respectively. |
Key words:thiofluoximate; pirimiphos-methyl; aqueous suspension concentrate; control efficacy |
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基金項目: 國家科技支撐計劃-高純甲基嘧啶磷清潔生產(chǎn)關(guān)鍵技術(shù)(2011BAE06A07-09)。
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作者簡(jiǎn)介: 李 敏(1987-),女,山東濱州人,助理研究員,碩士,主要從事農藥制劑加工技術(shù)研究(E-mail:limin_1011@163.com)。
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收稿日期:2014-06-30
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