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Applications of Krypton Gas
Like other rare gases, krypton gas is used extensively in lighting and photography. Krypton’s light has multiple spectral bands, which is useful in high energy gas lasers (krypton ions and excimer lasers). Each produces a different resonance and amplifies a spectrum. The specific applications of Krypton gas are below:
» Application in cinema : The emission lines of Krypton gas cause the ionized gas flow appearing in white. It gives the bulbs a brilliant white light. This is highly regarded in the film industry.
» Application in photography : Krypton is also used in some flash devices that allow high speed photography. Krypton gas is also combined with other gases to produce a luminous sign with a greenish yellow light
» Electrical equipment, light bulbs:
In fluorescent lamps, Krypton gas is blended with Argon gas for energy saving lamps. It reduces power consumption but also reduces bulb brightness and increases purchasing costs. The price of Krypton is usually about 100 times more expensive than Argon.
» Research, experiment: Laser fluoride krypton is used by scientists in experiments with a key role in nuclear fusion energy research. In experimental particle physics, liquid krypton is used to build nearly homogeneous levels of electromagnetic energy
» Application in Health: The isotope Krypton-83 is used in magnetic resonance imaging (MRI) for airway imaging.
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Krypton gas at a glance
What is Krypton gas, where did it come from and how was it discovered? All information related to this rare gas will be presented in this article for you to easily refer.
Krypton is an element with the chemical symbol Kr and its atomic number is 36. Krypton belongs to Group 18 or rare group and it is colorless, odorless and tasteless gas. There is only a small amount of Krypton existing in Earth’s atmosphere.
Krypton gas is rare, colorless, tasteless and odorless. Krypton has a chemical symbol of Kr and an atomic number of Krypton is 36. Krypton gas is present in Earth’s atmosphere as a trace and is isolated by distillation of liquid air segments. Krypton gas is often used with other rare gases in fluorescent bulbs.
Krypton possesses the characteristic chemical properties of inert gas in most practical applications, but many scientific studies and experiments show that it can react to produce compounds with fluorine. Krypton can also create meshes with water (H2O) when its gaseous atoms are trapped in the water molecular lattice.
How and where was Krypton Gas discovered?
Krypton gas was named after the word “kryptos”, its meaning is “hidden” in Greek. Kryoton was discovered by two scientists William Ramsay and Morris Travers in 1898.
They found that it was the remainer in liquid air after evaporating most of the other components. The rare Neon gas was also detected in a similar way in this study just a few weeks later.
William Ramsay was awarded the Nobel Prize in chemistry in 1904 thanked to this study and the discovery of the elements of the rare gas group.
An international agreement in 1960 determined the length of the meter in terms of the wavelength of light emitted by a krypton isotope. In October 1983, this krypton standard was replaced by the Bureau International des Poids et Mesures (International Metrology Commission).
Composition and characteristic properties of Krypton Gas
Krypton is also known as an inert gas because it has a very weak chemical activity, characterized by a 2-color spectrum of the strongest vibrant green and orange. It is one of the products of nuclear decay (fission) of uranium. Krypton is a white crystalline substance when present in a solid form with a face-centered cubic crystal structure. This is also a fairly common property of rare gases except helium with a tightly closed hexagonal crystal structure..
Mass atom: 82,92
Melting point (°C): −157,00
/Boiling point (°C): −151,70
Like other rare gases, krypton gas is considered chemically inert because it is quite weak. Studies from 1962 have helped us discovered some of the chemical compounds of krypton. Difluoride krypton is compound that has been made in grams, and can be produced in various ways. Other fluorides and other salts of the krypton oxide were also found subsequently. Ion-molecules such as ArKr + and KrH + have also been studied by scientists and there is evidence that KrXe or KrXe + do exist..
Isotopes of Krypton gas
Krypton is naturally derived with 1 light radioactive isotope and 5 stable isotopes. The krypton’s spectral stripe is easily created with some very sharp lines. Kr81 is the resulting product of atmospheric reaction between other naturally occurring krypton isotopes.
It is a radioactive isotope with a half-life of 250,000 years. Like xenon gases, krypton is also very volatile especially when it is close to surface water, so Krypton 81 is used to study and date ancient groundwater from about 50,000 to 800,000 years.
Production sources of this isotope is from nuclear reactors or included in the testing of atomic bombs and the release of Kr85 isotope during the recycling of fuel rods from nuclear reactors sources.
Actual scientific research has noted that there is a difference of about 30% in the concentrations of Kr85 isotopes in the Arctic and Antarctic.
The higher concentrations of this isotope in the Arctic are due to the fact that most of this Krypton is produced in the Northern Hemisphere and the process of fusing air is relatively slow between the two hemispheres.
Origin and production method:
The Earth has created and stored all of the rare gases of group 18 since its formation except helium. The concentration of this krypton gas in Earth’s atmosphere is only about 1 ppm. The amount of krypton in the atmosphere is uncertain because the measurement process depends on many factors. This gas is derived from the activities of meteorites and from the solar wind. So, thanks to the first measurements, the scientists assumed that krypton were very abundant in space.
This gas can now be separated from the liquefied air by fractional distillation. This production technology of Krypton gas is still being adopted by most industrial gas manufacturers.
Is Krypton gas toxic? When accidentally inhaled, how to handle it
Krypton is an asphyxiant but non-toxic gas. Krypton gas is seven times more anesthetic than air. A gas mix consisting of 50% Krypton and 50% natural air (which can happen in the leak site) will cause itching to humans. It is like breathing air at a pressure four times higher than normal.
This is like diving at a depth of 30m (100ft) and you have to breathe a mixture that contains only 10% oxygen (not as normal air, oxygen accounts for 20%) and hypoxia will be a great concern..
How to deal with accidental inhalation of Krypton gas:
You can prevent the worst of Krypton gas suffocation by being calm and knowledgeable. If you find someone asphyxiated, try to help him/her get out from there and move to fresh air area, or find a way to circulate air. When removing the victim of asphyxiation away from where the leak occurs, you can give artificial respiration or carry out the asphyxiant breath. Then, please let the victim a high dose oxygen mask by medical staff and take him/her to the hospital. Please practice preventive measures and safety discipline well while working with noxious and asphyxiant gases.