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).
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.
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.