EN17322-2020isaEuropeanstandardtitled"Environmentalsolidmatrices-Determinationofpolychlorinatedbiphenyls(PCBs)bygaschromatography-massselectivedetection(GC-MS)orelectroncapturedetection(GC-ECD)."Thisstandardprovidesguidelinesforthequantitativedeterminationofselectedpolychlorinatedbiphenyls(PCBs)insolidenvironmentalsamples,suchassoil,sediment,sludge,andwaste,usinggaschromatographycoupledwitheithermassselectivedetection(GC-MS)orelectroncapturedetection(GC-ECD).Thestandardcoverssamplepreparation,extraction,cleanup,andinstrumentalanalysisstepstoensureaccurateandreproducibleresults.Itspecifiesmethodsforminimizinginterferenceandachievingthenecessarysensitivityforregulatorycomplianceandenvironmentalmonitoring.ThechoicebetweenGC-MSandGC-ECDdependsonfactorssuchastherequireddetectionlimits,matrixcomplexity,andavailableequipment.EN17322-2020isdesignedtosupporttheassessmentofPCBcontaminationinsolidenvironmentalmatrices,aidinginpollutioncontrolandremediationefforts.