Distribution and association of trace metals in soft tissue and byssus of Mytilus edulis from the east coast of Kyushu Island, Japan.
Concentrations of Cd, Pb, Zn, Cu, Ag, Cr, Co Ni, Mn, andFe in soft tissues and byssi of blue mussel (Mytilus edulis) fromthree sites along the east coast of Kyushu Island, Japan, were determined byAAS method. Large inter-regional differences in metal concentrations in bothsoft tissues and byssi (Cu, Cd, and Pb and Cu, Pb, Co, Ni, Mn, and Fe,respectively) were recorded. Highly significant correlations (p< 0.01) were observed between tissue and byssal concentrations of Pb,Cu, Zn, and Mn. The tissue concentrations of Cu, Cd, and Pb were two ordersof magnitude greater in Mytilus edulis from expected to be themost contaminated locations compared to those from a nonindustrialized area. Intercomparison of the present study data with those published previouslyindicates that the soft tissue and especially byssus are useful in detectingsome areas of some metallic contaminants. The high concentrations of Cd, andespecially Pb and Cu, in Saganoseki mussels and moderately elevatedconcentrations of these metals in Akamizu mussels may be attributed to theanthropogenic emissions from a metallic refinery and an artificial fiberfactory, respectively. It is evident that, compared to the soft tissue, theincrease of Cu levels relative to Zn levels in the byssi of M.edulis are eight times higher, with a slope b (Cu/Zn) of 7.5 for byssusand 0.93 for soft tissue. This suggests that byssus, as compared to softtissue, is a more sensitive bioindicator for Cu. From the data obtained, thesoft tissue and especially byssi of M. edulis appear to be goodbioindicators for identification of coastal areas exposed to metalliccontaminants.
Szefer
P
P
Department of Analytical Chemistry, Medical University of Gdańsk, Al. Gen. J. Hallera 107, PL 80-416 Gdańsk, Poland.
Ikuta
K
K
Kushiyama
S
S
Szefer
K
K
Frelek
K
K
Geldon
J
J
D000818:Animals; D015415:Biomarkers; D049872:Bivalvia / Q000378:metabolism*; D007564:Japan; D008670:Metals / Q000032:analysis* / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis*
D015415:Biomarkers; D008670:Metals; D014874:Water Pollutants, Chemical