The 5 most dangerous pollutants

Lead-acid batteries 

These batteries are composed of sulfuric acid and lead plates. In addition to the toxicity of the components, they are oxidized when they are exposed, generating more dangerous and highly contaminated elements. 

Source

Mining products

Most of the waste from mining and processing of minerals is toxic and affects more than 2 million people worldwide. The most dangerous chemicals found near these sites are: arsenic, lead, chromium, mercury and cadmium.

Source

Mercury of gold 

The gold extraction process (which is usually done in the open air) releases more mercury, than any other industrial sector worldwide. Vaporized mercury is a potent neurotoxic that causes developmental disorders and affects the central nervous system. Water contaminated by mercury is very difficult to recover. 

Source

Lead casting 

Each time the lead is melted, several toxic elements (such as iron or zinc) are released, since the elimination of the impurities is done by extreme heat and the addition of chemicals and the residual pollutant gases and particles affect the health of the body. 2.5 million people. 

Source

Pesticides

Both the production, storage and application of this type of chemical agents, are highly dangerous to health. In fact, it is a lethal element for parasites (fungi, insects, etc.) but it can end up in water, soil, air and even in a salad dish. 

Source