Manganese: Agency for Toxic Substances And Disease Registry
What is manganese? Manganese is a naturally occurring metal that is found in many types of rocks. Pure manganese is silver-colored, but does not occur naturally. It combines with other substances such as oxygen, sulfur, or chlorine. Manganese can also be combined with carbon to make organic manganese compounds. Common organic manganese compounds include pesticides, such as maneb or mancozeb, and methylcyclopentadienyl manganese tricarbonyl (MMT), a fuel additive in some gasolines.
Manganese is an essential trace element and is necessary for good health. Manganese can be found in several food items, including grains and cereals, and is found in high amounts in other foods, such as tea.
-------------------------------------------------------------------------------- What happens to manganese when it enters the environment? Manganese can enter the air from iron, steel, and power plants, coke ovens, and from dust from mining operations. It can enter the water and soil from natural deposits, disposal of wastes, or deposits from airborne sources. Manganese exists naturally in rivers, lakes, and underground water. Plants in the water can take up some of the manganese from water and concentrate it.
How might I be exposed to manganese? Everyone is exposed to small amounts of manganese in air, water, and food. Individuals who work in occupations that mine or use manganese are likely to be exposed to excess levels in their work environment. People who improperly use pesticides such as maneb and mancozeb, may be exposed to excess levels.
How can manganese affect my health? Some individuals exposed to very high levels of manganese for long periods of time in their work developed mental and emotional disturbances and slow and clumsy body movements. This combination of symptoms is a disease called "manganism." Workers usually do not develop symptoms of manganism unless they have been exposed to manganese for many months or years. Manganism occurs because too much manganese injures a part of the brain that helps control body movements.
Exposure to high levels of airborne manganese, such as in a manganese foundry or battery plant, can affect motor skills such as holding one's hand steady, performing fast hand movements, and maintaining balance. Exposure to high levels of the metal may also cause respiratory problems and sexual dysfunction.
Is there a medical test to show whether I've been exposed to manganese? Tests are available that show levels of manganese in different body fluids. Measurements of manganese in blood, urine, feces, and scalp hair can be used to determine exposure to excess levels of manganese by testing whether levels of the metal in your body tissues are greater than normal. However, these tests cannot predict how the levels in your tissues will affect your health. Your doctor can take samples and send them to a testing laboratory.
Has the federal government made recommendations to protect human health? The EPA has set a non-enforceable guideline for the level of manganese in drinking water at 0.05 milligrams per liter (0.05 mg/L).
The Occupational Safety and Health Administration (OSHA) has set a limit of 5 milligrams manganese per cubic meter (5 mg/m³) of workplace air for the average amount of manganese during an 8-hour workday, 40-hour workweek.
The National Research Council has recommended safe and adequate daily intake levels for manganese that range from 0.3 to 1 mg/day for children up to 1 year, 1 to 2 mg/day for children up to age 10, and 2 to 5 mg/day for children 10 and older.
Welding rod fumes contain manganese a deadly neurotoxin that inhibits the brain’s ability to regulate physical motion. Men and women exposed to these manganese fumes develop Parkinsonian symptoms at the age of 46 as opposed to 66 and suffer for the rest of their life. Manganism is an induced form of Parkinson’s Disease. If you or a loved one has been injured due to welding rod fumes then please fill out the form below and obtain the representation that you deserve.
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