Abbreviations / terms
contrAA 600
Edition 01/2014
77
Measuring program
A collection of methods which requires compatible analysis condi-
tions (i.e., the same analysis technique, the same autosampler,
etc.) and which has been put together in a specific order. A meas-
urement program is used to analyze a sample sequence
(semi)automatically for different elements "at the same time". (“At
the same time” means that all samples are analyzed first for one
element and then for the next element).
A measurement program can also consist of only one method.
Modifier
Addition for changing the physical and chemical characteristics of
samples.
Detection limit
The weight (concentration) of the element to be analyzed that can
be detected with a defined statistical certainty. Also see determina-
tion limit.
Zero solution
Solution which is used to set the zero point. This can be the solvent
or the blank value solution or neutral value solution.
Precision
Measure of the statistical deviation of the measurement values from
a mean value (standard deviation, relative standard deviation)
Sample solution
Solution which originates after treating the sample to be analyzed
according to the analysis instructions. If no additional processing
steps are required, this is the measuring solution.
Pyrolysis
Most effective removal of incidental substances from the sample by
heating in the graphite tube furnace, without vaporizing any part of
the analytes.
QC
Quality control. Concerned with samples and processes for monitor-
ing the quality of the analysis over time.
Serial precision
Precision of several measurements over several days (e.g., 20-fold
determination in medicine: 20 days, each with 20 measurements)
Statistical series
For calculating the statistical accuracy of an analysis, the individual
sample is analyzed for the current element several times in a row.
This sample analysis series is defined as a statistical series in this
manual.
Stock solution
Solution of a suitable composition (diluent, acid type, acidic content,
etc.) which contains the analytes in high and known concentrations.
The stock solution is used for making reference solutions.
Background compen-
sation
Evaluation of measurement value with no background. The back-
ground compensation occurs simultaneously.
Background meas-
urement
Measurement of the spectral background in the environment or
under the analysis line.
