01939oam 2200529I 450 991071195960332120190314110920.0(CKB)5470000002488495(OCoLC)1083547087(EXLCZ)99547000000248849520190129d2015 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierResults from laboratory and field testing of nitrate measuring spectrophotometers /by Teri T. SnazelleReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2015.1 online resource (v, 15 pages, 13 unnumbered pages) illustrations (some color)Open-file report,2331-1258 ;2015-1065Also available online in PDF format from the U.S. Geological Survey (http://pubs.er.usgs.gov/).Includes bibliographical references (page 15).Ultraviolet spectrometryInstrumentsTestingSpectrometerTestingHydrological instrumentsTestingNitratesAnalysisGroundwaterPollutionMeasurementGroundwaterPollutionfastNitratesfastUltraviolet spectrometryInstrumentsTesting.SpectrometerTesting.Hydrological instrumentsTesting.NitratesAnalysis.GroundwaterPollutionMeasurement.GroundwaterPollution.Nitrates.Snazelle Teri T.1405409Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910711959603321Results from laboratory and field testing of nitrate measuring spectrophotometers3521513UNINA