In this paper,natural pyrethrum nano-capsule with a wall of the copolymer of styrene(St) and methyl methactylate(MMA) was prepared by means of microemulsion polymerization.

Progress in detecting natural pyrethrins in Chrysanthemum cinerariifolium;

Efficacy of Pyrethrins against Xenopsylla cheopis;

Efficacy of pyrethrins aerosol against cockroaches;

Influence of supercritical carbon dioxide extraction of pyrethrins by using ultrasound;

Preliminary study on the effect of ultrasound on supercritical carbon dioxide extraction of pyrethrins;

Separation and Purification of Natural Pyrethrins by Reversed Phase High Performance Liquid Chromatography;

Study on extraction of pyrethrin by compressed CO_2;

Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.

Compared with Soxhlet method and supercritical carbon dioxide extraction, microwave extraction of pyrethrins is a rapid method (about 200 s) with less solvent consumption (about 240 mL), higher yield and better product with light color.

Determination of Pyrethroids Residues in Tea by High Performance Liquid Chromatography with Ultrasonic Extraction;

Study of Three Kinds of Pyrethroids in Poisonous Fish Sample with Gas Chromatography;

Progress of Pyrethroids Insecticides;