What is persistent organic pollutants?
Persistent organic pollutants have four important characteristics: First, environmental persistence: because of its biodegradation, photolysis, chemical decomposition has a high resistance, it is difficult to be decomposed; Second, bioaccumulation: because it has Low water solubility, high fat solubility characteristics, it can bio-adipose tissue in the bio-accumulation in animals and humans to achieve the concentration of poisoning; Third, long-distance migration capacity: it can evaporate through the atmosphere in the long-distance migration , Resulting in global pollution spread; Fourth, high toxicity: these substances are mostly carcinogenic, teratogenic, mutagenic effect.
Persistent Organic Pollutants (POPs), refers to the synthesis of human beings can persist in the environment, through the bio-food chain (net) accumulation, and harmful to human health caused by chemical substances. Such as dioxin produced by incomplete combustion, belong to such substances.
Persistent organic pollutants belong to chemicals. Persistent organic pollutants must belong to chemicals.
