Total @A00297@ of a chemical present in an organism at a given time.
Source: PAC, 2001, 73, 993. (Risk assessment for occupational exposure to chemicals. A review of current methodology (IUPAC Technical Report)) on page 1022 [Terms] [Paper]
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). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.