Page 493 - Applied Pharmacognosy

• 7- Pesticides of plant origin as tobacco leaf and • nicotine

alkaloid; pyrethrum flower and

• pyrethrins; derris root and rotenoids.

•

• 8- Mescellaneous as bromopropylate, ethylene
• oxide........

Determination of pesticide residues

• chlorinated hydrocarbons and organophosphorus
pesticides retain a long residual action