@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 "Diff. of spectrophotometric spectra on GF/F filterered material pre and post methanol extraction"@en ; sdo:inDefinedTermSet ; sdo:name "Absorbance of electromagnetic radiation (597nm wavelength) {light absorbance} by the suspended particulate material >GF/F [pigment phase] by filtration and spectrophotometry on residue before and after methanol pigment extraction and differencing of the measurements"@en ; sdo:termCode "SDN:P01::PIGA597A" .