{"@context":{"dc":"http:\/\/purl.org\/dc\/elements\/1.1\/","skos":"http:\/\/www.w3.org\/2004\/02\/skos\/core#","skos:broader":{"@type":"@id"},"skos:inScheme":{"@type":"@id"},"skos:related":{"@type":"@id"},"skos:narrower":{"@type":"@id"},"skos:hasTopConcept":{"@type":"@id"},"skos:topConceptOf":{"@type":"@id"}},"@id":"https:\/\/digilab.ptb.de\/oiml-g-18\/vocab\/skos\/394","@type":"skos:Concept","skos:prefLabel":{"@language":"en-EN","@value=":"detection limit           #00151"},"skos:inScheme":"https:\/\/digilab.ptb.de\/oiml-g-18\/vocab\/","dct:created":"2022-12-19 09:13:30","skos:scopeNote":[{"@lang":"en-EN","@value":"(1) The detection limit is sometimes defined as an output signal equal to some other multiple (e.g., two or ten) of the noise level [2]. The noise level is the random background output signal of an instrument when sampling a blank or clean filtered air. (2) In this Document, the concentration of an airborne pollutant in either a gas or vapor phase is most often expressed in terms of the volume fraction of the pollutant in air: parts- per-million (ppm) [v\/v (10-6)]. Conditions of "}],"skos:definition":[{"@lang":"en-EN","@value":"the concentration of a substance that will yield a mean output signal equal to three times the mean short term noise level, as determined on a statistical basis "}],"skos:broader":["https:\/\/digilab.ptb.de\/oiml-g-18\/vocab\/skos\/2"]}