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    Spatial and seasonal variations of Acid Volatile Sulfide (AVS) and Simultaneously Extracted Metals (SEM) in Dutch marine and freshwater sediments

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    Authors
    Hoop MAGT van den
    Hollander HA den
    Kerdijk HN
    Series/Report no.
    RIVM Rapport 719101022
    Type
    Report
    Language
    en
    
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    Title
    Spatial and seasonal variations of Acid Volatile Sulfide (AVS) and Simultaneously Extracted Metals (SEM) in Dutch marine and freshwater sediments
    Translated Title
    Ruimtelijke en seizoensvariaties in beschikbaar sulfide (AVS) en simultaan geextraheerde metaal (SEM) gehalten in nederlandse mariene en zoetwater sedimenten
    Publiekssamenvatting
    Within the framework of the project Exposure Assessment, Acid Volatile Sulfide (AVS) and Simultaneously Extracted Metal (SEM) contents of Dutch marine and freshwater sediments were determined. For the present set of fifteen marine and six freshwater sediments AVS levels vary between non-detectable (<0.1) and approximately 50 notmol per gram dry sediment. The SEM/AVS ratio was found to be smaller than one in nineteen cases. Furthermore, seasonal variations in AVS and SEM concentrations were observed that may change the potential toxicity of metals in sediments. Seasonal changes in the SEM/AVS ratio were found to be different for various sediments.
    In het kader van het project Exposure Assessment zijn Acid Volatile Sulfide (AVS) en Simultaneously Extracted Metal (SEM) gehalten bepaald in een aantal mariene en zoetwater sedimenten. AVS-gehalten varieren van niet aantoonbaar (<0.1) tot ongeveer 50 notmol per gram droog sediment. In het merendeel van de monsters is een SEM/AVS ratio van kleiner dan 1 gevonden, hetgeen volgens recent gepubliceerde toxiciteitsonderzoeken inhoudt dat de metalen niet beschikbaar zijn voor opname door organismen. Het AVS gehalte blijkt onder andere afhankelijk te zijn van het jaargetijde, hetgeen kan leiden tot veranderingen in de potentiele beschikbaarheid van zware metalen.
    Publisher
    Rijksinstituut voor Volksgezondheid en Milieu RIVM
    URI
    http://hdl.handle.net/10029/10403
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