Vocabulary concept

Concept URI		http://dd.eionet.europa.eu/vocabulary/aq/analyticaltechnique/CV-AFS
Identifier
Label
Definition		Cold vapour atomic fluorescence spectroscopy is a subset of the analytical technique known as atomic fluorescence spectroscopy (AFS). Used in the measurement of trace amounts of volatile heavy metals such as mercury, cold vapour AFS makes use of the unique characteristic of mercury that allows vapour measurement at room temperature. Free mercury atoms in a carrier gas are excited by a collimated ultraviolet light source at a wavelength of 253.7 nanometres. The excited atoms re-radiate their absorbed energy (fluoresce) at this same wavelength.
Notation
Status
Status Modified
Accepted Date
Not Accepted Date
Scope note		Add new
Editorial note		Add new
Example		Add new