Recycling and Disposal Options
Many states and local agencies have developed collection/exchange programs for mercury-containing devices such as thermometers, manometers, and thermostats. Some counties and cities also have household hazardous waste collection programs.Mercury is also eliminated in urine, so drinking extra water can help to speed up the process. Avoiding exposure. The best way to get rid of mercury in your body is to avoid sources of it whenever you can. As you reduce your exposure, the level of mercury in your body will decrease as well.
Removing mercury from the water can be achieved using four processes: Coagulation/Filtration, Granular Activated Carbon, Lime Softening, and Reverse Osmosis. Coagulation/filtration is a common treatment which uses AlSO4 that reacts with the mercury to form a solid which can precipitate out of the water.
Slowly and carefully squeeze mercury onto a damp paper towel. Alternatively, use two pieces of cardboard paper to roll the mercury beads onto the paper towel or into the bag. OPTIONAL STEP: It is OPTIONAL to use commercially available powdered sulfur to absorb the beads that are too small to see.
2 Elemental mercury is also poisonous to the nervous system. Humans are mainly exposed by inhaling vapours. These are absorbed into the body via the lungs and move easily from the bloodstream into the brain. However, when elemental mercury is ingested, little is absorbed into the body.
For example, the Brita water filter pitcher uses a coconut-based activated carbon filter that removes chlorine, zinc, copper, cadmium and mercury. Unlike metals, they pass through the filter because these don't bind to the carbon.
Health effects of mercury exposure
The inhalation of mercury vapour can produce harmful effects on the nervous, digestive and immune systems, lungs and kidneys, and may be fatal. The inorganic salts of mercury are corrosive to the skin, eyes and gastrointestinal tract, and may induce kidney toxicity if ingested.Several methods have been used to remove heavy metals from contaminated water. They include chemical precipitation [17,18], ion exchange [19,20], adsorption [21,22], membrane filtration [23,24], reverse osmosis [25,26], solvent extraction [27], and electrochemical treatment [28,29].
Globally, mercury is most commonly 'produced' in Spain, particularly from the Almaden mine which is known for its high quality mercury. It may also be obtained from Yugoslavia, the United States (mainly California), and Italy. Mercury is obtained from an ore called cinnabar or another called calomel.
Table of Common Element Charges
| Number | Element | Charge |
|---|
| 80 | mercury | 1+, 2+ |
| 81 | thallium | 1+, 3+ |
| 82 | lead | 2+, 4+ |
| 83 | bismuth | 3+ |
Mercury(
2+) is a divalent metal cation, a
mercury cation and a monoatomic dication.
3.1Computed Properties.
| Property Name | Property Value | Reference |
|---|
| Formal Charge | 2 | Computed by PubChem |
| Complexity | 0 | Computed by Cactvs 3.4.6.11 (PubChem release 2019.06.18) |
In mercury, the binding energy of outer electrons (towards nucleus) is highest and no electron is available to participate in metallic bond formation. Therefore, mercury does not have a specific crystal structure and is the only metal which is liquid at room temperature with a melting point of -38 degree Celsius.
Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by grinding natural cinnabar or synthetic mercuric sulfide.
Mercury (element)
| Mercury |
|---|
| CAS Number | 7439-97-6 |
| History |
| Discovery | Ancient Egyptians (before 1500 BCE) |
| Main isotopes of mercury |
Mercury(2+) is a divalent metal cation, a mercury cation and a monoatomic dication.
Pure mercury is stable and does not tarnish at ordinary temperatures. It will form alloys with most metals. It is not soluble in water or most other liquids, but will dissolve in lipids (fats and oils).
Mercuric ion. Mercuric cation. Mercury, ion (Hg2+)
Mercury does not react with non-oxidizing acids but does react with concentrated nitric acid, HNO3, or concentrated sulphuric acid, H2SO4, to form mercury(II) compounds together with nitrogen or sulphur oxides. Mercury dissolves slowly in dilute nitric acid to form mercury(I) nitrate, mercurous nitrate, Hg2(NO3)2.
Mercury, being a metal, forms positive ions when it reacts with non-metals. Its charge is +2. It can also form a polyatomic ion Hg2 that has a charge of +2. In this case the formal charge of each mercury atom is +1.
List of Ions in the CCCBDB
| Species | Name | charge |
|---|
| Cu- | Copper atom anion | -1 |
| Cu+ | Copper atom cation | 1 |
| LiH- | lithium hydride anion | -1 |
| LiH+ | lithium hydride cation | 1 |
The compounds of mercury are either of +1 or +2 oxidation state. Mercury(II) or mercuric compounds predominate. The mercury(I) ion, Hg22+, is diatomic and stable. Mercury(I) chloride, Hg2Cl2 (commonly known as calomel), is probably the most important univalent compound.
| Name | Formula | Other name(s) |
|---|
| Mercury(II) | Hg+2 | Mercuric |
| Nitronium | NO2+ | |
| Potassium | K+ | |
| Silver | Ag+ | |
Mercury (element)
| Mercury |
|---|
| Atomic properties |
| Oxidation states | −2 , +1 (mercurous), +2 (mercuric) (a mildly basic oxide) |
| Electronegativity | Pauling scale: 2.00 |
| Ionization energies | 1st: 1007.1 kJ/mol 2nd: 1810 kJ/mol 3rd: 3300 kJ/mol |
There are relatively few mercury(I) or mercurous compounds. The mercury(I) ion, Hg22+, is diatomic and stable. Mercury(I) chloride, Hg2Cl2 (commonly known as calomel), is probably the most important univalent compound. It is used in antiseptic salves.
- Most common oxidation states: +1, +2.
- M.P. -38.87º
- B.P. 356.57º
- Density 13.546 g/cm3
- Characteristics: Mercury is one of the few liquid elements. It dissolves in oxidizing acids, producing either Hg2+ or Hg2+2, depending on which reagent is in excess.
Polyatomic ions are ions that are composed of two or more atoms that are linked by
covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group.
Types of Ions:
| Metal | Mercury |
|---|
| Ion | Hg22+ |
|---|
| Systematic name | mercury(I) ion |
|---|
| Common name | mercurous ion |
|---|
If, however, you drink mercury, hardly any of it stays in the system - most of it exits the body once it has performed its function. "Taken orally, without inhaling, there's almost no risk," says Gebel. But you really shouldn't try drinking mercury - most of the patients in the 19th century didn't survive.
Prognosis. Some of the toxic effects of mercury are partially or wholly reversible, either through specific therapy or through natural elimination of the metal after exposure has been discontinued. Autopsy findings point to a half-life of inorganic mercury in human brains of 27.4 years.
In fact, it can be dangerous; a new study from the Environmental Working Group (EWG) found alarming levels of chromium-6 (the carcinogenic "Erin Brockovich" chemical) in drinking water that nearly 200 million Americans drink, from all 50 states. Chromium-6 is far from the only water pollutant.
Mercury is emitted by natural sources, such as volcanoes, geothermal springs, geologic deposits, and the ocean. Human-related sources primarily include coal combustion, waste incineration, industrial uses, and mining.
The EPA requires treated tap water to have a detectable level of chlorine to help prevent contamination. Over 98 percent of U.S. water supply systems that disinfect drinking water use chlorine. In the U.S. we have depended on chlorine as our drinking water disinfectant for over a century.
The Food and Drug Administration (FDA) set the standards for bottled water. They require manufacturers to process and transport bottled water under sanitary conditions and to use processes that ensure the safety of the water. This means that, in general, bottled water is safe to drink.
Is it Safe to Drink Tap Water? Although it's true that the water in some cities contains trace amounts of pollutants, most healthy adults can still safely drink from the tap in most areas—and, in fact, tap water remains the most cost-effective, convenient way to stay hydrated.
The following are the common methods of water purification.
- Boiling. This is a reliable way to purify water.
- Use of Iodine solution, tablets or crystals. This is an effective and more convenient method.
- Use chlorine drops. Chlorine has the ability to kill bacteria in water.
- Use water filter.
- Use Ultraviolet Light.
So how much fluid does the average, healthy adult living in a temperate climate need? The National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids for men. About 11.5 cups (2.7 liters) of fluids a day for women.
