The maximum permissible quantity of a chemical compound or its
metabolites, or any deviation
from the norm of biological parameters
induced by those substances in exposed humans.
PAC, 2001, 73, 993
(Risk assessment for occupational exposure to chemicals. A review of current methodology (IUPAC Technical Report))
on page 1022
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. doi:10.1351/goldbook