Spatial Distribution of Polychlorinated Biphenyls （PCBs） Contaminants in the Tidal-flat Sediments of Yangtze Estuary-中国期刊网

摘要 PCBspollutantsaremeasuredontidal-flatsedimentsofYangtzeestuarybyahighresolutioncapillarycolumngaschromatography(HP6890)equippedwithan63Nielectroncapturedetector(ECD).TheconcentrationtendencyofPCBsisPhragmiteszone＞Scirpuszone＞baremudflats.TherearelinearrelationsbetweenPCBsandTOCand＞63μmgrainsizepercentage(involume).Thelowchlorinatedcongenersmaybemoreimportantthanthehighchlorinatedcongenersinthisarea.PCBsprefertoaccumulateinthesedimentsnearsewageoutletsandPhragmiteszone.Thesediments′PCBspollution(10.7～28.6ng/g,dryweight)intheYangtzeestuarytidal-flatislessseriousthanthatofthemostofotherareasintheworld.Butthedetectedratiois100%,eventheJiuduanshashoalhasdetectedPCBs,somuchattentionshouldbepaidtothisareaforPCBs.

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Spatial Distribution of Polychlorinated Biphenyls （PCBs） Contaminants in the Tidal-flat Sediments of Yangtze Estuary

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Spatial Distribution of Polychlorinated Biphenyls （PCBs） Contaminants in the Tidal-flat Sediments of Yangtze Estuary

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