Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| [ meld een fout in dit record ] | mandje (1): toevoegen | toon |
 |
| one publication added to basket [63883] | |
| Historical input and behaviour of hexachlorobenzene, polychlorinated biphenyls and polycyclic aromatic hydrocarbons in two dated sediment cores from the Scheldt estuary, SW Netherlands van Zoest, R.; van Eck, G.Th.M. (1993). Historical input and behaviour of hexachlorobenzene, polychlorinated biphenyls and polycyclic aromatic hydrocarbons in two dated sediment cores from the Scheldt estuary, SW Netherlands. Mar. Chem. 44(1): 95-103. http://dx.doi.org/10.1016/0304-4203(93)90008-C
In: Marine Chemistry. Elsevier: Amsterdam. ISSN 0304-4203; e-ISSN 1872-7581, meer
|  |
| Beschikbaar in | Auteurs |
| |
| Trefwoord |
|
| Auteurs | Top | |
| Abstract |
The recent input of PCBs and PAHs (e.g. 80–280 µg m−2 a−1 for PCB 153 and 2–7 mg m−2 a−1 for fluoranthene) was two to three times lower than the maximum input in the mid 1960s. The peak discharge of HCB was recorded around 1972. Contents of organic micropollutants in one core were twice as high as in the other one, although both sites had approximately the same distance to the main pollution source. A high percentage of particles less than 20 µm, probably of marine origin with relatively low pollutant contents in one core, were presumably responsible for this difference. The PCB profiles show post-depositional congener-selective mobilization caused by advective transport (tailing). The PCB pattern changes, between 1965 and 1975, from less chlorinated to more heavily chlorinated PCBs. This shift coincides with the decrease in the use of PCBs in open systems. Unlike PCBs, the PAH assemblage is remarkably uniform within a core and between the cores. The PAH ratios indicate that the combustion of coal was the source of PAHs in the Scheldt estuary. |
| Top | Auteurs |
