gas phase
elemental
mercury
Observed Property
Observation Matrix
number concentration
gaseous elemental mercury number concentration
variable
trace gas variables
Number concentration means number of molecule per unit volume, and is used in the construction molecular_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for elemental mercury is Hg.
elemental mercury number concentration
ACTRIS Vocabulary
Object Of Interest
Constraint