Insecticides and World Health: WHO Expert Committee on Insecticides

6 Health and Insecticides

Health and Insecticides

Pyrethroids are synthetic chemicals similar to pyrethrins in the pyrethrum extract which is obtained from Chrysanthemum plant. Historically, pyrethroids have been classified into two classes that differ in their chemical structure and symptoms of exposure: Type I pyrethroids include allethrin, tetramethrin, d-phenothrin, permethrin, and bioresmethrin. Type II pyrethroids include cypermethrin, c...

Herbicides and insecticides effects on green algae and cyanobacteria strain

The toxic effects of herbicides (Machete, Saturn) and pesticides (Diazinon and Malathion) on green algae, Scenedesmus obtusiusculus, and cyanobacteria, Anabaena flos aquae, were studied. The results indicated that Machete and Saturn, in comparison to Diazinon and Malathion, were more toxic. On the other hand it was revealed that green algae was more sensitive to the pesticides than the cyanobac...

Insecticides

volume is divided into two parts. Part one contains specifications for technical DDT, BHC, met oxyc or^ chlordane, dieldrin, BHC containing 90% or rnore isomer, Pyrethrem extract (cerosol grade), water dispersible powder concentrates containing DDT and BHC and emulsion concentrates containing DDT, BHC and Dieldrin, all being intended for use against vectors of diseases of man. Part two contains...

WHO Expert Committee on Biological Standardization.

This report presents the recommendations of a WHO Expert Committee commissioned to coordinate activities leading to the adoption of international recommendations for the production and quality control of vaccines and other biologicals and the establishment of international biological reference materials. The report starts with a discussion of general issues brought to the attention of the Commi...