Signed by 128 countries, the Convention takes its name from the most severe mercury poisoning disaster in history, which came to light in Minamata, Japan in May 1956, after sustained dumping of industrial wastewaters into Minamata Bay
, beginning in the 1930s.
Years of investigation traced the disease to the Chisso chemical company that, for decades, had dumped its mercury-tainted wastewater directly into Minamata Bay
, poisoning the fishing community's steady diet of fish and shellfish that in turn affected the residents' central nervous system.
Health effects associated with high levels of MeHg prenatal exposure (about 700 ppm), such as those that occurred in Minamata Bay
, Japan, caused by the release of mercury in industrial wastewater between 1932 and 1968 (20), have included cerebral palsy, severe intellectual disability, movement and coordination disorders, dysarthria, and sensory impairments (1).
The tragic consequences of industrial release of methylmercury into Minamata Bay
off Japan between 1932 and 1968 and the illegal dumping of inorganic mercury into the waters at Grassy Narrows, Ontario, Canada in 1970 demonstrated in horrific terms the effects of methylmercury on human health: defects in fetuses and neurological disruption in children and adults that, in severe cases, led to madness, paralysis and death.
Once Minamata Bay
was the treasure chest of our sea.
On Wednesday, delegates held a ceremonial opening of the diplomatic conference in Minamata, the city where many local people were poisoned after eating mercury-contaminated seafood from Minamata Bay
A few years before her birth, dead fish and other sea creatures had begun appearing in Minamata Bay
2010) described that the cause of the MeHg in the fish pollution developed from chemical wastes that were dumped into the Minamata Bay
by Chisso Co.
Minamata disease is known as one of Japan's worst pollution diseases caused by mercury-laced waste water released into Minamata Bay
by Shin-Nippon Chisso Hiryo K.
Case in point: Research on mercury toxicity was first published in 1968 (1) in Minamata Bay
By the 1950s, it had become a major petrochemical company, which had been dumping its waste into Minamata Bay
since the 1920s.
In the early 1960s, high levels of methylmercury in industrial wastewater accumulated in shellfish and fish in Minamata Bay
, Japan, and were eaten by local people.