Page 495 - Applied Pharmacognosy

• On the other hand, if the pesticide is known , so the
determination of pesticide residue can be carried out
according to well established analytical techniques.
Determination of total chlorine and phosphorus

• Most pesticides contain organically – bound chlorine and
phosphorus.

• Preparation of the sample
• Extract the sample with a mixture of water and acetonitrile.

• Pesticides are soluble in this solvent and some polar and
moderately polar compounds may also be dissolved.