If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net
Calcium is the 20th element in the periodic table. It is a reactive, soft metal that has a wide variety of industrial applications. It is a common metal for alloying with other elements such as aluminum, beryllium and copper.
It is also an important mineral in the human body, found in teeth, bones and shells. It is a key component of the body’s chemical reactions, especially in the immune system and in brain development.
The name calcium comes from the Latin word for lime, calx. It is a reactive, alkaline metal that can combine with other elements to form oxides and carbonates.
Natural calcium is composed of six isotopes: 40Ca, 42Ca, 43Ca, 44Ca, 46Ca and 48Ca. The isotope-amount ratio n(44Ca)/n(40Ca) of seawater can be used as a paleothermometer to determine temperatures in the past based on the temperature-dependent isotopic fractionation between these two isotopes.
Stable isotopes of calcium and radioisotopes of calcium (45Ca, 47Ca) are useful for tracing calcium uptake, utilization and excretion in the human body. These isotopes are also used to date rocks, although they do not work well in this application due to their high half-lives. In addition, a large portion of the calcium that is present in natural material is in the form of 40Ca, which limits its use for dating. But these isotopes are still used for a wide range of other purposes, including in determining the age of rocks and minerals by using methods such as K-Ar dating.