It is extracted from the atmosphere through fractionation, a process that also produces nitrogen, oxygen, neon, krypton, and xenon.
Oxygen is an important part of the atmosphere and is necessary to sustain most terrestrial life, being used in respiration.
Nitrogen makes up 78% of the Earth’s atmosphere and is a component of all living tissues.
Carbon dioxide is a gas also present in the earth’s atmosphere in a concentration of about 0.04%, an important concentration in maintaining the balance of the biosphere.
Helium is a noble gas found in small amounts in the atmosphere, less than 0.001% in air.
It has the lowest boiling point and the lowest melting point.
Neon, krypton, xenon are rare or noble gases and are found in very low concentrations in the environment.
Noble gases are used as lamp filling gases.
| Cookie | Durată | Descriere |
|---|---|---|
| cookielawinfo-checkbox-analytics | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics". |
| cookielawinfo-checkbox-functional | 11 months | The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". |
| cookielawinfo-checkbox-necessary | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". |
| cookielawinfo-checkbox-others | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. |
| cookielawinfo-checkbox-performance | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance". |
| viewed_cookie_policy | 11 months | The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data. |