@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @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 sdo: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . @prefix xsd: . rdf:type sdo:DefinedTerm ; sdo:description "A stand-alone microfluidic wet-chemical (colourimetric) nitrate and nitrite lab-on-chip (LOC) system designed to perform automated in-situ chemical analysis using the Griess assay. The instrument detects nitrate and nitrite (up to 350 µM, 21.7 mg/L as NO3-) with a limit of detection (LOD) of 0.025 µM for nitrate (0.0016 mg/L as NO3-) and 0.02 µM for nitrite (0.00092 mg/L as NO2-). This performance is suitable for all natural waters except for the oligotrophic open ocean. Beaton et al. (2012) has a full description of the technology."@en ; sdo:inDefinedTermSet ; sdo:name "National Oceanography Centre (NOC) Nitrate and Nitrite v3.2c Lab-On-Chip (LOC) sensor"@en ; sdo:termCode "SDN:L22::TOOL1103" .