heliumvarat

Heliumvarat, or helium resources, refers to the known and potential supplies of helium accessible for human use. Helium is a noble gas, the second-lightest element, with a very low boiling point and high chemical inertness. It is produced on geological timescales and, once released into the atmosphere, escapes; as a result, helium is treated as non-renewable on human timescales.

Most commercial helium is recovered from natural gas reserves where helium is dissolved in the gas. After extraction, the gas is processed to separate, purify, and sometimes liquefy helium for storage and transport. The atmosphere contains about 5 parts per million helium, but it is not a practical source due to cost and scale.

Uses include cryogenics for superconducting magnets (notably MRI scanners), semiconductor manufacturing, fiber optics, leak detection, and various scientific applications. Global demand is influenced by economic activity, policy decisions, and the discovery of new reserves.

Economics and policy: Helium supply has been concentrated in a small number of regions, leading to price volatility and strategic concerns about long-term availability. Some countries maintain stockpiles and regulate exports to safeguard domestic needs. Increasingly, recycling and more efficient use are emphasized as part of supply management.

Outlook: Advances in exploration, processing, and reuse, together with continued attention to conservation and substitutes, will shape the future availability of heliumvarat.