356
Masking
Masking reagent
Maximum tolerated ratio
Measurand
Measurement
Method
Annex!
Use of a reagent intended to interact chemically in
solution with interfering species in a sample in order
to avoid their perturbation without the need to
physically separate the reaction products from the
medium (pseudo-separation) (Chap. 5, pp. 219 - 222,
242).
S. "Reagent".
A parameter that describes the influence of an
interfering species in the context of selectivity. The
highest interferent-to-analyte concentration ratio
that results in no perturbation to the CMP (Chap. 2,
pp. 7l, 88, 95).
The quantity measured in a CMP, which mayor may
not be the analyte. Fourth level in the hierarchy of
Fig. 1.18 (Chap. 1, pp. 26, 27, 35).
The process by which a signal yielded by the analyte
or a reaction product of it is compared with that produced by a standard. Lowest step in the hierarchy of
Fig. 1.18 (Chap.I,pp.2-7, lO,26-28,30).
The specific implementation of an analytical technique to determine one or more analytes in a given
sample. The materialization of the analytical process.
Absolute method. A type of calculable quantitation
method involving some (Chap. 6, pp. 252, 263, 277) or
no analytical standard (Chap. 6, pp. 257, 266).
Analytical method. The body of specific operations
used in the qualitative and quantitative characterization of an analyte (or analyte family) in a given
sample. Entails the use of a technique (instrument)
and is the materialization of a CMP (s. Fig. 1.16)
(Chap. I, p. 23).
Calculable method. One that provides results based
on mathematical calculations involving both
tabulated data and measurements made during the
CMP. Mayor may not use analytical standards
(Chap. 6, pp. 252,256-258, 27l, 276-279).
Comparative method. A type of relative quantitation
method in which the final result is obtained by
comparing the signal of the sample with that yielded
by a sample standard (Chap. 6, pp. 252, 275 - 277).
Official method. A method adopted and issued by a
governmental office for use in endorsing the results
produced by laboratories (Chap. 8, pp. 325, 340).
Primary method. The type of method with the
highest level of metrological quality (Chap. 8, pp.
324,325,340).
Masking
Masking reagent
Maximum tolerated ratio
Measurand
Measurement
Method
Annex!
Use of a reagent intended to interact chemically in
solution with interfering species in a sample in order
to avoid their perturbation without the need to
physically separate the reaction products from the
medium (pseudo-separation) (Chap. 5, pp. 219 - 222,
242).
S. "Reagent".
A parameter that describes the influence of an
interfering species in the context of selectivity. The
highest interferent-to-analyte concentration ratio
that results in no perturbation to the CMP (Chap. 2,
pp. 7l, 88, 95).
The quantity measured in a CMP, which mayor may
not be the analyte. Fourth level in the hierarchy of
Fig. 1.18 (Chap. 1, pp. 26, 27, 35).
The process by which a signal yielded by the analyte
or a reaction product of it is compared with that produced by a standard. Lowest step in the hierarchy of
Fig. 1.18 (Chap.I,pp.2-7, lO,26-28,30).
The specific implementation of an analytical technique to determine one or more analytes in a given
sample. The materialization of the analytical process.
Absolute method. A type of calculable quantitation
method involving some (Chap. 6, pp. 252, 263, 277) or
no analytical standard (Chap. 6, pp. 257, 266).
Analytical method. The body of specific operations
used in the qualitative and quantitative characterization of an analyte (or analyte family) in a given
sample. Entails the use of a technique (instrument)
and is the materialization of a CMP (s. Fig. 1.16)
(Chap. I, p. 23).
Calculable method. One that provides results based
on mathematical calculations involving both
tabulated data and measurements made during the
CMP. Mayor may not use analytical standards
(Chap. 6, pp. 252,256-258, 27l, 276-279).
Comparative method. A type of relative quantitation
method in which the final result is obtained by
comparing the signal of the sample with that yielded
by a sample standard (Chap. 6, pp. 252, 275 - 277).
Official method. A method adopted and issued by a
governmental office for use in endorsing the results
produced by laboratories (Chap. 8, pp. 325, 340).
Primary method. The type of method with the
highest level of metrological quality (Chap. 8, pp.
324,325,340).