A Determination of Nikel to Vanadium Ratio in P.radiata and S. cucullata Resulted from Oil Pollution in Coastal Fringes in Hormozgan Province

Due to importance of Persian Gulf in exploitation and transfer of fossil fuels as well as the ongoing
regional political events, there is always a trend of entrance of pollutants into this acquatic ecosystem
that also ends up in the body of sea animals. Vanadium and nickel are two important indicators of 0 ~1
pollution. Lengthy exposion to these elements causes serious harmful effects in human health ,
different harsh allergies being examples, just to name some.
In this study the amount of these elements as well as their ratio (NNa) in S Cucullata and P. radiata
were determined. P. radiata samples were collected from four stations in Hormozgan provinces
coasts as well as from Hormoz peninsula. S.cucullata samples were collected from four stations in
Hendurabi peninsula. Collection of samples was done in autumn and winter 2002. Following shell
biometry, a digestion of samples was carried out using the international standard (Berman 1995
Method 7000) . Ni was evaluated through atomic absorption, using philips Model PU9400.
Vanadium was assessed using a Shimadez atomic absorption set, Model G670. The measurements
were made for both crust and muscle in shells. The results indicate:
Mean nickel and vanadium contents in S cucullata are 6.32, 0.77, and in P.radiata they are 3.44 and:
0.76 mgkg respectively.
These element's content in shell as well as in tissue exceeds the standard ualues while at the same time]
shell content being more than that in tissue.
The only source of V is realized to be oil pollutants where as sources other than oil pollutants can i
cause Ni contamination.
There was no relationship observed between Ni & V contamination, and biometry (size and weight).
There was a significant positive corellation found between V content in shell and tissue. There exhists
a significant negative relationship between Ni and V in tissue. A significant relationship is observed
between Ni, V content in Sicucullata shell and tissue. In S. cucullata there is also found a positive
significant relationship between shell length and shell V content.
Between tissue content of Ni and heel length in S. cucullata there exists a significant negative
relationship.