Elements · ← Sm Samarium · Gd Gadolinium →
Europium labels are read by time-resolved fluorescence in sensitive immunoassays.
| Symbol | Eu |
|---|---|
| Atomic number | 63 |
| Standard atomic weight | 151.964 |
| Group | none (lanthanide series) |
| Period | 6 |
| Block | f-block |
| Category | Lanthanide |
| Standard state | Solid |
| Discovered | 1901 |
Source: PubChem, Europium (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Hemmilä and colleagues developed an immunoassay using europium(III) labels measured by time-resolved fluorometry, detecting europium down to 5 × 10^-14 M.
As reported in: Hemmilä, Dakubu, Mukkala et al. (1984). Europium as a label in time-resolved immunofluorometric assays. Analytical Biochemistry. doi:10.1016/0003-2697(84)90095-2
Abstract only
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