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variable group > trace gas variables > gaseous PCB 178 and PCB 129 number concentration

PREFERRED TERM

gaseous PCB 178 and PCB 129 number concentration  

DEFINITION

  • 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'. PCB 178 and PCB 129 is a mixture of two compunds and belongs to the group of persistent organic pollutants known as polychlorinated biphenyls (PCBs).

BROADER CONCEPT

ENTRY TERMS

  • PCB 178 and PCB 129 number concentration

OBSERVATION MATRIX

OBJECT OF INTEREST

OBSERVED PROPERTY

URI

https://vocabulary.actris.nilu.no/actris_vocab/PCB178andPCB129numberconcentration

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