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1

Distribution of herbicides (S-Triazines) in the Pomeranian Bay

100%
Graeve M., Wodarg D.
Oceanological Studies
|
1996
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vol. 25
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issue 4
31-38
EN
An investigation of selected triazine herbicides in solution and in suspended particu-late matter (SPM) was carried out in the Pomeranian Bay in 1995. Triazine concentrations were determined by gas chromatography in combination with quadrupole mass spectrometry (GC/MS). Particulate and dissolved material was separated from seawater by means of an in situ filtration/extraction system. The regional distribution of s-triazines in the western Pomeranian Bay in July 1995 is de-scribed. Triazine concentrations in solution displayed pronounced differences between individ-ual components (atrazine: 2-20 ng?dcm-3, simazine: 5-30 ng?dcm-3, terbuthylazine: <5 ng?dcm-3). Triazine concentrations in suspension were very low, often below the detection limit (50 pg?dcm-3).
2

Phosphate desorption from sediments in the Pomeranian Bay (Southern Baltic)

100%
Frankowski L., Bolalek J.
|
|
vol. 26
|
issue 1
205-214
EN
The paper discusses phosphate exchange across the sediment-water interface in the Pomeranian Bay in March 1996. The following parameters were additionally determined in the sediment cores sampled: humidity, ignition loss, organic carbon and organic nitrogen contents, content of phos-phorus inorganic forms (bound to calcium, aluminium and iron) and phosphate concentrations in interstitial waters, this last being measured at three sampling stations. The results indicate that a relationship exists between phosphate desorption and each of the above parameters, including the nature of the sediment. The sorption capacity was also found to be related to the location of the sediment sampling sites (distance from the mouth of the river Owina). At six stations phosphate fluxes from the sediment to water (obtained in a laboratory chamber experiment) ranged from 27 to 417 mmol?m-2?day-1. Phosphate concentrations in the near-bottom water were increasing during the incubation time.
3

Distribution of polychlorinated biphenyls (PCBs) in the pelagial of the Pomeranian Bay

100%
Graeve M., Wodarg D.
Oceanological Studies
|
1996
|
vol. 25
|
issue 4
39-45
EN
Investigations on individual chlorobiphenyls (PCBs) were carried out in the pelagial of the western Pomeranian Bay. An in-situ filtration/extraction system was used to distinguish between the particulate and dissolved chlorobiphenyls. Multidimensional gas chromatography (MDGC) techniques were applied to the separation and identification of individual chloro-biphenyls. The regional distribution of dissolved and particle (SPM) associated individual chloro-biphenyls is presented. The investigations of chlorobiphenyls in different seasons indicate no pronounced seasonal variability in the aqueous phase. However, the concentrations of particu-late chlorobiphenyls did exhibit seasonal maxima depending on plankton productivity.
4

Water level forecast for the Pomeranian Bay from the hiromb model

100%
Kalas M., Staskiewicz A., Szefler K.
Oceanological Studies
|
2001
|
vol. 30
|
issue 3-4
39-57
EN
Water level 48-hour forecast data for the Pomeranian Bay, obtained from the operational model ?HIROMB?, have been compared with the coastal water level records. The gauges of Mrzezyno, Dziwnow, Koserow and Sassnitz as well as 0-24 hours and 24-48 hours forecast for the appropriate grid nodes have been analysed. An overview of different statistical criteria has been done. The statistical analysis has shown a satisfactory agreement between the forecast and observed data. However, the problem of the common reference level for the all gauges remains still unsolved.
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