gas and particle phase
mass concentration
gas and particle variables
Observed Property
Observation Matrix
Object Of Interest
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. "Gas and particle" means a system consisting of both gas and suspended liquid or solid particles in air (except cloud droplets). The chmical formula for PCB 172 is C12H3Cl7. It belongs to the group of persitent organic pollutants (POPs) known as polychlorinated biphenyls (PCBs). The IUPAC name is 2,2',3,3',4,5,5'-Heptachlorobiphenyl
ACTRIS Vocabulary
gas and particle PCB 172 mass concentration
variable
PCB 172