What caused the Minamata disease in Japan?
Minamata disease is a methylmercury poisoning with neurological symptoms and caused by the daily consump- tion of large quantities of fish and shellfish that were heavily contaminated with the toxic chemical generated in chemical factories and then discharged into the sea.
What pollution causes Minamata?
Minamata disease (M. d.) is methylmercury (MeHg) poisoning that occurred in humans who ingested fish and shellfish contaminated by MeHg discharged in waste water from a chemical plant (Chisso Co. Ltd.). It was in May 1956, that M.
What environmental disaster happened in Minamata Japan?
One of the world’s most horrific environmental disasters — the 1950 and 60s mercury poisoning in Minamata, Japan — may have been caused by a previously unstudied form of mercury discharged directly from a chemical factory, research by the University of Saskatchewan (USask) has found.
What was the nature of the environmental disaster Minamata?
Minamata Disease, the existence of which was officially acknowledged by the government in 1956, is a typical pollution-related problem caused by effluent containing methylmercury from chemical plants.
Who was affected by the Minamata disaster?
(It was later discovered that Chisso Corporation had dumped an estimated 27 tons of mercury compounds into Minamata Bay.) As the mercury dumping continued, poisoned women gave birth to poisoned babies. These children were born with severe deformities including gnarled limbs, mental retardation, deafness, and blindness.
Which of the following is responsible for the Minamata disease caused due to water pollution )?
So, the correct answer is ‘Mercury’
What does Minamata mean?
Medical Definition of Minamata disease : a toxic neuropathy caused by the ingestion of methylmercury compounds (as in contaminated seafood) and characterized by impairment of cerebral functions, constriction of the visual field, and progressive weakening of muscles.
How was the Minamata disaster cleaned up?
With regard to the Minamata plant of Chisso Co., Ltd., through the completion of the perfect circulation system in 1966, water effluent containing methylmercury compound had not been discharged outside of the plant in principle, and the pollutant source was eliminated through cessation of the production of acetaldehyde …
What were the effects of Minamata disease?
In what is now called Minamata disease, patients presented with paresthesia, ataxia, dysarthria, tremor, and constriction of visual fields or “tunnel vision.” These symptoms can be progressive and sometimes fatal.
What are the effects of Minamata disease?
Where is Minamata?
Kumamoto Prefecture, Japan
Minamata Bay is a bay on the west coast of Kyūshū island, located in Kumamoto Prefecture, Japan. The bay is part of the larger Shiranui Sea which is sandwiched between the coast of the Kyūshū mainland and the off-lying islands of Kumamoto and Nagasaki prefectures.
How was the contamination from the Minamata Bay mitigated?