| 低浓度乐果的纯化过程研究 |
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| 引用本文： | 黄美英,李军,陈亮. 低浓度乐果的纯化过程研究[J]. 农药, 2004, 43(2): 80-82 |
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| 作者姓名： | 黄美英 李军 陈亮 |
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| 作者单位： | 重庆三峡学院化工系,重庆,万州,404000;四川大学化工系,四川,成都,610065 |
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| 基金项目： | 国家自然科学基金资助项目(批注号:20376048)，重庆三峡学院资助课题 |
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| 摘 要： | 以低浓度乐果(86．2％)为原料，采用熔融结晶和发汗操作对乐果纯化过程进行了研究，考察了熔融结晶和发汗时间、温度对乐果纯度的影响，结果表明：在30℃下结晶60min，得到的晶体在35℃下发汗120min，晶体纯度可达98％以上，产品质量达到国家标准。
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| 关 键 词： | 乐果 熔融结晶 发汗 |
| 文章编号： | 1006-0413(2004)02-080-03 |
Purification of low concentrations of dimethoate |
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| HUANG Mei-Ying,LI Jun,CHEN Liang. Purification of low concentrations of dimethoate[J]. Pesticides, 2004, 43(2): 80-82 |
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| Authors: | HUANG Mei-Ying LI Jun CHEN Liang |
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| Affiliation: | HUANG Mei-Ying1,LI Jun2,CHEN Liang2 |
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| Abstract: | Melt crystallization and a sweating procedure were used to purify low concentrations of dimethoate. Theeffects of crystallization temperature and time, and sweating temperature and time on dimethoate purity were investigated.Crystallization for 60 min at less than 30oC, and sweating for 120 min at less than 35oC, yielded dimethoate crystals with>98%, a level of purity that meets national standards. |
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| Keywords: | Dimethoate melt crystallization sweating |
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