POLYCHLORINATED NAPHTHALENES IN 3-SPINED STICKLEBACK GASTEROSTEUS-ACULEATUS FROM THE GULF OF GDANSK

The congener-specific data of polychlorinated naphthalenes (PCNs) are presented for the three-spined stickleback collected from four spatial ly distant sites in the beach zone in the south-western part of the Gu lf of Gdansk, Baltic Sea. The lipid weight normalised concentration of total PCNs in stickleback ranged from 35 to 130 ng/g. Tetra-CNs (54-6 4%) were a dominating chloronaphthalene homologue group in stickleback s, followed by penta- (37-44%), hexa- (0.9-1.7), and hepta-CNs (0.02-< 0.1%). The fingerprint of chloronaphthalene congeners showed the 1,2,3 ,5,7-/1,2,4,6,7-P5CN (Nos 52/60), 1,2,4,6-/1,2,4,7-/1,2,5,7-T4CN (Nos 33/34/37) and 1,3,5,7-T4CN (No. 42) as a most contributing members, an d also some compositional (%) differences. The patterns of tetra-, pen ta-, and hexa-CNs displayed compositional variations in a residue pict ure of those substances depending on the sampling site, and implied on a specific point source of pollution, possibly due to the neighbourho od of shipyards and marine ports as a cause of the differences/similar ities observed. (C)1998 Elsevier Science Ltd. All rights reserved