Radioactivity (radioact.)

by | Feb 4, 2020 | List of kinds-of-property, Kind-of-quantity

Radioactivity (radioact.)

Abbreviation

 Radioact.

Definition in words

Number of nuclear decays occurring in a given quantity of material in a small time interval, divided by the duration of that time interval (ref 3)

The property of certain nuclides showing radioactive decay (ref 1)

Definition by equation

Systematic terms

 Radioactivity of component B in system 1

Result type

 Rational scale
  • Value sets are positive numerical values
  • Algebraic operations are allowed (a=nb; a≠nb)
 Numerical values from 0-∞

Unit

 Bq, kBq

Non-recommended term

 Hydrostatic volumic energy, hydraulic pressure, hydrostatic pressure

Reference
  1. IUPAC Goldbook https://goldbook.iupac.org/terms/view/R05092
  2. SI Brochure https://www.bipm.org/en/publications/si-brochure/
  3. Lehmann HP, Fuentes-Arderiu X, Bertello L. Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996). Pure and Applied Chemistry. 2009;68(4):957-1000. doi:10.1351/pac199668040957.
  4. Ferard G, Dybkaer R, Fuentes-Arderiu X. Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. 1 ed: Royal Society of Chemistry; 2016. 182 p.

 

Laboratory field

Example

Clinical Chemistry

 Generic abbreviated
 NPU13810 Pt—58Co-Cobalamin(administered); radioact.(p.o.) = ? kBq
Full result NPU13810 Patient—58Co-Cobalamin(administered); radioactivity(oral administration) = 25 kilobecquerel
Abbreviated result NPU13810 Pt—58Co-Cobalamin(administered); radioact.(p.o.) = 25 kBq
Written expression The radioactivity of oral 58Co-Cobalamin administered to Mr. Smith [25] kBq.
Equation

Reference
NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ and http://www.labterm.dk/default.aspx

  • Kind-of-property

    • Nominal kind-of-property

    • Kind-of-quantity

      • Unitary kind-of-quantity

        • Rational unitary kind-of-quantity

          • Radioactivity

Reference
  • Dybkaer R. Concept system on ‘quantity’: formation and terminology. Accredit Qual Assur. 2013;18(3):253-60.
  • Dybkaer R. ISO terminological analysis of the VIM3 concepts ‘quantity’ and ‘kind-of-quantity’. Metrologia. 2010;47(3):127-34.
Date Term Note
1996-01-01 Radioactivity Term established

NPU term identifier

 QU50136