A known amount of a homogeneous material, assumed to be taken with negligible
sampling error. The term is usually applied to fluids. The term '
aliquot' is usually used when the fractional part is an exact divisor of the whole; the term
'
aliquant' has been used when the fractional part is not an exact divisor of the whole (e.g.
a
portion is an aliquant of
).
When a
laboratory sample or
test sample is '
aliquoted' or otherwise subdivided, the portions have been called split samples.
Source:
PAC, 1990, 62, 1193
(Nomenclature for sampling in analytical chemistry (Recommendations 1990))
on page 1206
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2173
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.
