@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . skos:exactMatch . skos:related . skos:member . skos:narrower . skos:altLabel "" ; skos:broader ; skos:definition "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 chemical formula for hypobromous acid is HOBr."@en ; skos:notation "SDN:P07::CF12N277" ; skos:note "accepted"@en ; skos:prefLabel "mass_concentration_of_hypobromous_acid_in_air"@en ; skos:related . skos:narrower . skos:related .