A term used to describe several related methods in which a transient temperature change
in a flowing liquid stream, caused by a chemical reaction, is used to quantitatively
determine an analyte. The analyte is introduced as a discrete liquid sample (i.e.
test portion) into the flowing stream. This definition limits the scope to experiments with primarily
an analytical emphasis, performed in a
flow injection calorimeter. This maintains a clear distinction from classical flow calorimetric
methods where reagents are combined continuously in flowing streams, or where the
heat effect is measured
via the flowing of a fluid over a reaction vessel. An acceptable synonym is enthalpimetric
flow injection analysis. Other non-recommended terms which have been used in the literature
include
peak enthalpimetry and
enzyme thermistor.
Flow enthalpimetry has been used to describe the
flow injection technique, but its use for this purpose is discouraged.
Source:
PAC, 1994, 66, 2487
(Nomenclature of thermometric and enthalpimetric methods in chemical analysis (IUPAC
Recommendations 1994))
on page 2491
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.
