gas phase
type: Concept

Observed Property

nitrogen oxides
type: Concept

Observation Matrix

number concentration
type: Concept

Object Of Interest

ACTRIS Vocabulary
type: ConceptScheme

trace gas variables
type: Concept
narrower: nitrogen oxides number concentration

variable
type: Concept
narrower: nitrogen oxides number concentration

nitrogen oxides number concentration
contributor: 0000-0002-1490-169X
creator: https://orcid.org/0000-0001-5158-8703
type: Concept
Observation Matrix: gas phase
broader: variable
broader: trace gas variables
Observed Property: 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'. Nitrogen oxides (NOx) describes a mixture of nitric oxide (NO) and nitrogen dioxide (NO2) and is a member of the group of inorganics.
in scheme: ACTRIS Vocabulary
Object Of Interest: nitrogen oxides