IntroductiontoGB17378.4-2007"SpecificationsforOceanographicMonitoring-Part4:SeawaterAnalysis"GB17378.4-2007isaChinesenationalstandardthatspecifiesthetechnicalrequirementsandmethodsforseawateranalysisinoceanographicmonitoring.AspartoftheGB17378series,thisstandardfocusesontheproceduresforsampling,preservation,andlaboratoryanalysisofseawatersamplestoensureaccurateandconsistentdatacollection.Thestandardcoverskeyparameterssuchassalinity,dissolvedoxygen,nutrients(e.g.,nitrates,phosphates),heavymetals,petroleumhydrocarbons,andotherchemicalandphysicalpropertiesofseawater.Itprovidesdetailedmethodologies,qualitycontrolmeasures,anddatareportingguidelinestosupportmarineenvironmentalprotection,resourcemanagement,andscientificresearch.GB17378.4-2007iswidelyusedbymarinemonitoringagencies,researchinstitutions,andenvironmentalorganizationsinChinatomaintainthequalityandcomparabilityofseawateranalysisdata.Compliancewiththisstandardhelpsensurethereliabilityofmarinemonitoringprogramsandsupportstheassessmentofseawaterqualityinaccordancewithnationalandinternationalregulations.
