Friday, April 4, 2014

In Mercury Pollution in Water and Environment

In Mercury Pollution in Water and Environment
The use of mercury in industries often cause environmental pollution , either through waste water and air through the ventilation system . Mercury discharged into the river , beach , or body of water around the industry - the industry can then contaminate fish and other water creatures and plants including algae air.Selanjutnya small fish and other water creatures may be eaten by fish or other aquatic animals and larger animals or enter through the gills .
Shells can also mengumpulkanmerkuri in rumahnya.Ikan - fish and animals are then consumed by humans so that humans can collect his preformance mercury . Several studies have shown that all fish are not directly contaminated with mercury during its growth still contains mercury in the body at low concentrations , ie from 0.005 to 0.075 ppm .

        
Toxicity and Biological Methylation
Poisoning has occurred and is often quite serious poisoning because it can lead to death and disability seumuur living in the tables below shows the five mercury poisoning that claimed quite a lot and going on until 1968 . Poisoning - poisoning is mainly caused by the consumption of mercury-contaminated fish or consumption of grain treated with mercury .
TABLE I.

       
MERCURY POISONING CASE THE BIGGEST YEAR 1953-1969 .
locationyearVictim ( person )Bay of Minamata , JapanIraqwest PakistanGuatemalaNiigata , Japan1953-1960196119631966196843 dead , 68 disability / illness35 dead , 321 disability / illness4 dead , 34 CACT / pain20 dead , 45 disability / illness5 dead , 25 disability / illnessSource: Palar , 1995 .
Although the mechanisms of mercury poisoning in the body is not clear , but some things about the toxicity of mercury can be explained as follows :
1 ) All the components of sufficient quantities of toxic mercury in the body .
2 ) Each component has different characteristics of mercury in their toxicity , accumulation or distribution collection and retention time in the body .
3 ) biological transformation can occur in the environment or in the body where the mercury component is converted from one form into another form .
4 ) The effect of mercury in the body because it can inhibit the alleged action of the enzyme and cause cell damage due to the ability of mercury to be bound by sulfur -containing groups in the molecules present in the enzyme and the cell wall . This situation resulted in inhibition of enzyme activity and chemical reactions are catalyzed by enzymes in the body . The properties of the membrane of the cell wall will be damaged due to the binding of mercury so that normal activities will be disrupted .
5 ) Damage to the body caused by mercury is usually permanent , and has yet to be cured .
People - people who have potential exposure to mercury .
According to the Ministry of Health of Health , 1996 , people who have potential exposure to mercury ( Hg ) are:
1 ) Workers maker of chlorine and soda coustic
2 ) Factory worker batrey , fluorescent lamps , mercury lamps .
3 ) Metelurgis
4 ) miner and processor of HGS , gold , silver , copper and zinc
5 ) factory paint and pigment
6 ) Painters
7 ) Rollers paper
8 ) factory workers as well as spraying of pesticides and fungicides / user
9 ) Pharmaceutical Company
10 ) Plumbers
11 ) cosmetic products
12 ) Dental oersonel
13 ) Electroplators
14 ) Plant explosives
15 ) wool factory workers and tanners
16 ) machine operator sharpener
17 ) Ink Factory
18 ) Workers in hazardous waste site
19 ) Officers laboratory .
Fetuses , infants and children have a high risk for acquiring impact MeHG.MeHG Exposure can cross the placenta , nervous system sensitive to Hg poisoning . Due to high levels of MeHg in breast milk so nursing infants may be exposed . The workers were using mercury or mercury-containing products , and their family members may have a higher risk to mercury exposure , fetuses and children are at highest risk of exposure to the effects of methyl Hg .

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