Amount-of-substance of a component divided by the mass of the system.
Notes:
-
The term component is recommended for clinical chemistry, ISO uses "substance".
-
The term system is recommended for clinical chemistry, ISO uses mixture.
-
Use of the term level as a synonym for content is deprecated.
-
In describing a quantity, content must be clearly differentiated from concentration.
Source:
PAC, 1996, 68, 957
(Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations
1996))
on page 994
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
