CHEMISTRY: PESTICIDES AND CHEMICALS

non-biological breakdown or transformation of the pesticide

change them from one omopound to one or more derivatives - reactions happen based off PH and moisture levels of the soil

chemical degradation

degradation

hydrolysis, reaction between pesticides and water

water degrades pesticides by dividing large molecules into smaller ones, occur in the surface or root zone or whenever source of water is available

photodegradation

breaking down pesticides by sunlight

BAMBOO RAYON

sodium hydroxide and carbon disulfide

hydroxide ion (pH effect) found in sodium hydroxide is hazardous for the environment. A high concentration in water will result in toxic effects for aquatic organisms e.g. fish.

carbon disulfide is known for evaporating into the air and running off into waterways, contributing to global pollution

diluted solution of sodium hydroxide is added to the cellulose sodium xanthogenate.

also called viscose rayon:" chemically processed cellulose fibers.

chemicals transform the stalk into long cellulose strands which then create bamboo textiles.

COTTON PRODUCTION USES MANY CHEMICALS

most toxic chemical

most widely used pesticide

causes fatal poisoning

TEXTILE DYES

"dyes can adhere to compatible surfaces by solution, by forming covalent bond or complexes with salts or metals, by physical adsorption or by mechanical retention"

composed of a group of atoms known as chromophores