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Journal of Dispersion Science and Technology Volume 29, 2008 - Issue 3
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Original Articles

Preparation and Characterization of Beta Cypermethrin Nanosuspensions by Diluting O/W Microemulsions

Hui Zeng College of Chemistry and Molecular Science, Wuhan University, Wuhan, China
,
Xuefeng Li College of Chemistry and Molecular Science, Wuhan University, Wuhan, China
,
Gaoyong Zhang College of Chemistry and Molecular Science, Wuhan University, Wuhan, China
&
Jinfeng Dong College of Chemistry and Molecular Science, Wuhan University, Wuhan, ChinaCorrespondence[email protected]
Pages 358-361 | Received 28 Jan 2007, Accepted 12 Feb 2007, Published online: 25 Feb 2008
 
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Abstract

Nanosuspensions of beta cypermethrin with narrow size distribution were prepared from O/W microemulsions. Dynamic light scattering showed that the size of nanoparticles of beta cypermethrin changed little by increasing the volume of diluted water. Transmission electron microscopy confirmed that these nanoparticles have spherical shape. The normal phase high performance liquid chromatography assay showed that the precipitation had no influence on the composition of pesticide. The dissolubility of the pesticide shows that the formulation was approved controlled release.

This work was supported by the National Natural Science Foundation of China (NSFC 20233010 and 20573079).

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