![Calcium-45 (Ca-45)](https://www.clinisciences.com/de/upload/thumbs/calcium-stmzkb-c58cc7.jpg)
Calcium-45 (Ca-45)
Calcium (Ca) has 24 known isotopes with mass numbers varying between 34 and 57 but has no known nuclear isomers. Five of these isotopes are stable, Ca-40, Ca-42, Ca-43, Ca-44 and Ca-46. Ca-40 and Ca-46 are radioisotopes with extremely long half-lives because no disintegration has been observed at this time. The Ca-48 radioisotope has such a long half-life (43 × 1018 years, nearly three billion times the age of the universe) that it is considered practical in practice.
The most abundant isotope is Ca-40, accounting for nearly 97% of the existing calcium, Ca-44 is 2%, the other three isotopes share the remaining 1%. The standard atomic mass of calcium is thus 40.078 (4) u, close to the isotopic mass of Ca-40.
Calcium also has a cosmogenic isotope, radioactive Ca-41, with a half-life of 102,000 years.
The most stable of the artificial radioisotopes is Ca-45, with a half-life of 163 days. All other isotopes have a half-life of less than 5 days, and most less than 1 minute. The least stable is Ca-34 with a half-life of less than 35 nanoseconds.
Calcium 45 is the most available calcium isotope. It emits beta radiation and is used as a tracer. It is used in particular in the study of calcium metabolism.
Ergebnis Ihrer Suche : 8 Produkt(e) gefunden
Grenzen Sie Ihre Suche ein :
RUOCE / IVD
- Unconjugated 4
- human 5
- Biochemicals 3
- Protein/peptide 3
- ELISA/ELISPOT 1
- Primary antibody 1
- e. coli 3
- mouse 1
- ELISA 1
- WB 1
- Human 3
- 2623C2_2a 1
Katalog-Nummer
Beschreibung
Cond.
Preis zzgl. MwSt.
‹
›