Search results
Results From The WOW.Com Content Network
Parathion methyl, or methyl parathion, is an organophosphate insecticide, possessing an organothiophosphate group. It is structurally very similar to parathion-ethyl . It is not allowed for sale and import in nearly all countries around the world, while a few allow it under subject to specified conditions only.
Parathion, also called parathion-ethyl or diethyl parathion, is an organophosphate insecticide and acaricide.It was originally developed by IG Farben in the 1940s. It is highly toxic to non-target organisms, including humans, so its use has been banned or restricted in most countries.
In 1999, the EPA banned most uses of methyl parathion and azinphos methyl, citing the risks they pose to children. [18] Both methyl parathion and azinphos methyl are organophosphates. Organophosphates are pesticides that kill insects by disrupting nerve impulses. Unfortunately, these pesticides have the same effect on humans.
Farmers and everyone in surrounding areas of pesticide poisoning are exposed and at risk of all the long term effects. [45] The neurotoxicity of certain pesticides has been implicated as a potential contributing factor to the development of neurodegenerative diseases, raising concerns about their long-term impact on human health.
Parathion was among the first marketed, followed by malathion and azinphosmethyl. Although organophosphates were used in considerable qualities they were originally less important than organochlorine insecticides such as DDT , dieldrin , and heptachlor .
The biodegradation mechanism of many OPs has been studied deeply, especially for the methyl parathion, whose degradation genes and enzymes were cloned and purified. There is a need to select more useful strains, since only a few bacteria have been studied thoroughly in relation to the functional enzymes and genes. [21]
Exposure to high amounts of aldicarb can cause weakness, blurred vision, headache, nausea, tearing, sweating, and tremors in humans. High doses can be fatal to humans because it can paralyze the respiratory system. [9] In South Africa (where Aldicarb is popularly known as Two Step) it is widely used by burglars to poison dogs. [15] [16] [17]
Paraoxon is one of the most potent acetylcholinesterase-inhibiting insecticides available, around 70% as potent as the nerve agent sarin, and so is now rarely used as an insecticide due to the risk of poisoning to humans and other animals. Paraoxon has been used by scientists to study acute and chronic effects of organophosphate intoxication.