gas phase
mass concentration
Observed Property
Observation Matrix
ACTRIS Vocabulary
Mass concentration means mass per unit volume and is used in the construction mass_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 chmical formula for PCB 169 is C12H4Cl6. It is a member of the group of persistent organic pollutants known as polychlorinated biphenyls (PCBs). The IUPAC name is 3,3′,4,4′,5,5′-Hexachlorobiphenyl
PCB 169
PCB 169 mass concentration
variable
trace gas variables
gaseous PCB 169 mass concentration
Object Of Interest