## Concept information

### PREFERRED TERM

gaseous PCB 175 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'. The chmical formula for PCB 175 is C12H3Cl7. It is a member of the group of persistent organic pollutants known as polychlorinated biphenyls (PCBs). The IUPAC name is 2,2',3,3',4,5',6-Heptachlorobiphenyl

### BROADER CONCEPT

### ENTRY TERMS

- PCB 175 number concentration

### OBSERVATION MATRIX

### OBJECT OF INTEREST

### OBSERVED PROPERTY

### URI

https://vocabulary.actris.nilu.no/actris_vocab/PCB175numberconcentration

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