Analytical Chemistry & Spectroscopy
9 terms
Sampling
The process of selecting a small portion of material that genuinely represents the bulk being analysed.
Analytical Chemistry & SpectroscopySecondary Standard
A solution whose concentration has been established by titration against a primary standard.
Analytical Chemistry & SpectroscopySensitivity
The change in an instrument's response for a given change in analyte concentration.
Analytical Chemistry & SpectroscopySpecificity
The ability of a method to measure the analyte accurately in the presence of everything else in the sample.
Analytical Chemistry & SpectroscopySpin–Spin Coupling
The splitting of an NMR signal into multiple lines caused by interaction with neighbouring non-equivalent nuclei.
Analytical Chemistry & SpectroscopyStandard Deviation
A statistical measure of the spread of a set of repeated measurements about their mean.
Analytical Chemistry & SpectroscopyStandardisation
The determination of the exact concentration of a solution by titrating it against a primary standard.
Analytical Chemistry & SpectroscopyStationary Phase
The fixed material in a chromatographic system with which the sample components interact as they pass.
Analytical Chemistry & SpectroscopySystematic Error
An error that shifts every result in the same direction by a similar amount.