ABSTRACT
The importance of estimation of uncertainty in chemical analysis is due to its direct relationship with the quality of the analytical information, and with the reliability of the measurement. Taking into account the definitions given in a previous chapter of this book for the reliability of the analytical information — as a function of the reliabilities or uncertainties of different steps of the analytical process — it follows that the reliability of the analytical information (R
) is
R
=
f
(
U
,
U
,
U
,
U
)
where
U
is the uncertainty of sampling process,
U
is the uncertainty of the method,
U
is the uncertainty of the instrument, and
U
is the uncertainty of data processing.
