heptachlor การใช้

• Heptachlor and its epoxide absorb to soil particles and evaporate.
• Heptachlor formulation is registered for restricted use only in sugarcane cultivation in the country.
• Heptachlor and chlordane are some of the most potent carcinogens tested in animal models.
• Chlorinated cyclodienes include aldrin, dieldrin, endrin, heptachlor, chlordane and endosulfan.
• Due to its highly stable structure, heptachlor can persist in the environment for decades.
• Heptachlor epoxide is more likely to be found in the environment than its parent compound.
• Usually sold as a white or tan powder, heptachlor is one of the cyclodiene insecticides.
• Higher doses of Heptachlor when exposed to newborn animals caused decrease in body weight and death.
• "' Heptachlor "'is an organochlorine compound that was used as an insecticide.
• These include : aldrin, chlordane, DDT, dieldrin, endrin, heptachlor, mirex and toxaphene.
• Endosulfan is a derivative of hexachlorocyclopentadiene, and is chemically similar to aldrin, chlordane, and heptachlor.
• Animals exposed to Heptachlor epoxide during gestation and infancy are found to have changes in nervous system and immune function.
• The US EPA has limited the sale of heptachlor products to the specific application of fire ant control in underground transformers.
• Some of these pollutants are DDT, aldrin, chlordane, dieldrin, endrin, heptachlor, hexochlorobenzene, and toxaphene.
• In 1962, Rachel Carson's " Silent Spring " questioned the safety of heptachlor and other chlorinated insecticides.
• The presence of DDT and heptachlor residues indicates that the contraband highly toxic pesticides are still being used indiscriminately, the study said.
• Five others _ the pesticides chlordane, dieldrin, heptachlor and mirex and the industrial byproduct hexachlorobenzene _ were chosen for elimination with limited exemptions.
• The popularity of these insecticides increased after many of the organochlorine insecticides such as DDT, dieldrin, and heptachlor were banned in the 1970s.
• Some pesticides, including aldrin, chlordane, DDT, dieldrin, endrin, heptachlor, hexachlorobenzene, mirex and toxaphene, are considered POPs.
• One of the samples contained heptachlor residue of 0.789 microgram per litre while DDT in another sample measured 1.527 microgram per litre.