Mercury is easily decomposed body – Communities around the river and the bay Waeapo Kayeli on Buru Island, Maluku, mercury-contaminated needs serious attention of the government.
Water consumption and water animals of the region should be discontinued until the mercury content in the water and aquatic biota that meets the safe threshold. If that is not done, people’s health is at stake.
Mercury was the only liquid metal. Inorganic mercury used to separate gold from the ground. Disposal of waste mercury hit-making mercury get into rivers, bays, and oceans. Mercury also settles in the sediment bottom waters.
Deposition of mercury that can be eaten by plankton, the lowest level in aquatic food chains. Since the entry of metabolism of living beings, inorganic mercury turns into methylmercury which is an organic mercury.
As a heavy metal, mercury is very difficult to disentangle the body of living creatures, including humans, so that left the body forever. Therefore, the mercury in plankton migrate to aquatic insects or other small aquatic animals that eat the plankton.
Similarly, when a small aquatic animals eaten by bigger fish. As a result, the big fish at the top of the food chain contains mercury outweigh the small aquatic animals.
“It makes some countries restrict the trade and consumption of fish up to the amount of a certain size,” said food chemist, who is also Professor of Food Science and Technology, Bogor Agricultural University, Nuri Andarwulan, Saturday (14/11).
Exposure to mercury is also determined habitat and movement patterns of aquatic animals. In the course of the river to the sea, the mercury concentration decreased due to increased volume of water and increased the area.
So, the fish in the food chain the same level in the river near the gold mine had mercury levels higher than in the estuary or bay.
In addition, aquatic animals with limited movement patterns, such as shrimp, scallops, and crab, had mercury levels higher than fish with high roaming capability.
Animals with limited motion high mercury exposure throughout life, whereas high cruising defenseless animals could reduce mercury exposure on him.
Research Domu Simbolon from the Department of Fisheries Resources Utilization IPB and colleagues, in the content of Mercury and Cyanide in fish caught from Kao Bay, North Halmahera, in the Journal of Marine Science, September 2010, calling, mercury levels of fish in the Gulf of Kao contaminated gold mining high , Mercury is more concentrated in the liver than fish meat.
Mercury-contaminated fish in waters usually have tumors and lesions in the outer skin layer. If the fish are exposed to toxic chemicals was used for human consumption, it triggers the accumulation of mercury in the body and cause various diseases.
Mercury enter the human body through a variety of ways. Aside from water and food contaminated with mercury entering through the respiratory tract or skin.
Sources of mercury contamination varied, ranging from gold mining, coal burning thermal power generation, industrial, mining stone until cinnabar containing 70-80 percent mercury.
Mercury in the Earth’s crust is released to the surface via volcanic eruptions. In addition, the mercury used in dental fillings (amalgam), batteries, fluorescent lights, thermometers, and skin whitening cosmetics.
Gastroenterologi- Hepatology Consultant Faculty of Medicine, University of Indonesia, General Hospital Center Cipto Mangunkusumo Ari Fahrial said mercury that enters through food or drinks on the gastrointestinal tract. Then, the mercury into the liver or the heart to the heart and pumped up to circulate throughout the body.
It makes mercury accumulate in many organs of the body, from the skin, hair, brain, down to the fetus through the placenta.
Exposure to mercury in the fetus, especially in the first trimester, interfere with the formation of the fetus, triggering blindness and organ incomplete.
The spread of mercury throughout the body makes the detection of mercury in the body is easily done by checking the blood and hair. That can be done in a particular laboratory.
The case occurred due to the use of mercury in Minamata, Japan, in the 1950s. The World Health Organization (WHO) noted, more than 50,000 people were exposed to certain levels of mercury, more than 2,000 people contracted Minamata disease that causes brain damage, paralysis, talking incoherently, and dazed.
Ari added, the final stage of processing of mercury in the body in the kidneys. The problem is, the ability of the kidneys to excrete mercury is limited. “As a result, mercury accumulates in the kidneys, the immune system down, trigger kidney failure, and lead to death,” he said.
While the mercury that enters through the respiratory damage the lungs. It was common in those of industrial workers who use mercury in coal combustion or industrial processes.
Limitations of the body remove heavy metals through urine and sweat appear on his threshold of exposure to mercury in the body.
The Scientific Panel for Contamination in the Food Chain (Panel CONTAM) European Food Safety Authority (EFSA) and the Committee of Experts on Materials Food Additives (JECFA) established Food and Agriculture Organization (FAO) and WHO call, the maximum limit of exposure to inorganic mercury per week (TWI) 4 micrograms per kilogram of body weight per week.
For exposure to methyl mercury, particularly in marine fish, set the CONTAM Panel 1.3 micrograms per kilogram of body weight per week allowed in the body. The JECFA set a threshold for methyl mercury of 1.6 micrograms per kg per week.
Because mercury can hardly be described body, according to the WHO, the only way to avoid mercury exposure is to stop the use of mercury in gold mining, reducing the use of products containing mercury. Another way is to use environmentally friendly energy for the plant.
Also, avoid areas exposed to mercury and limit fish consumption mercury exposure. Cooking fish does not remove mercury because mercury boiling point of 356.7 degrees Celsius, no processed foods to a high temperature.
A number of countries are pushing the limit consumption of fish by size because large fish can contain high mercury. Small shrimp, salmon and oysters can be eaten without restriction and long-lived large fish, such as sharks and albacore tuna, can be consumed is limited.
According to Nuri, the public need not be afraid to eat fish from the waters of Indonesia. Because of the vast Indonesian sea, the mercury levels of polluted areas dropped significantly. However, vigilance food consumption of mercury contamination should be done. jual smart detox indonesia