İki Bivalvia Türünde (Pinctada radiata Leach,1814 ve Brachidontes pharaonis Fischer, 1870) Bazı Ağır Metal (Cd, Fe, Zn, Cu) Birikimlerinin Araştırılması

Çalıflmada (Mayıs 1999-Nisan 2000), Akkuyu Koyu’ndan (‹çel-Türkiye) toplanan çift kabuklu yumuflakçalardan, Pinctada radiata Leach, 1814 ve Brachidontes pharaonis Fischer, 1870’in yumuflak dokularında Cd, Fe, Zn ve Cu birikimi arafltırılmıfltır. A¤ır metal içerikleri, Perkin-Elmer 2380 Model Atomik Absorbsiyon Spektrofotometresi ile ölçülmüfltür. A¤ır metal birikim ortalamaları ve standart hatalar B. pharaonis’te 0,0605 ± 0,00467 µgg-1 Cd, 2,8227 ± 0,24486 µgg-1 Fe, 0,2979± 0,02368 µgg-1 Zn, 0,0355 ± 0,00303 µgg-1 Cu; P. radiata’da ise 0,0058 ± 0,00034 µgg-1 Cd, 0,3682 ± 0,04252 µgg-1 Fe, 0,1579 ± 0,00628 µgg-1 Zn, 0,0027 ± 0,00018 µgg-1 Cu (yafl a¤ırlık) olarak bulunmufltur. Buna göre, a¤ır metaller B. pharaonis’te Fe>Zn>Cd>Cu, P. radiata’da ise Fe>Zn>Cu>Cd fleklinde sıralanmıfltır. Saptanan birikim miktarları, Türk standartlarının çok altında oldu¤undan, Akkuyu Koyu’nda a¤ır metal kirlili¤inin olmadı¤ı sonucunu çıkarmak mümkündür

Bioaccumulation of Some Heavy Metals (Cd, Fe, Zn, Cu) in Two Bivalvia Species (Pinctada radiata Leach, 1814 and Brachidontes pharaonis Fischer, 1870)

Bioaccumulation of some heavy metals (Cd, Fe, Zn and Cu) in fresh parts of 2 bivalvia species (Pinctada radiata Leach, 1814 and Brachidontes pharaonis Fischer, 1870) was examined in samples collected between May, 1999, and April, 2000, in Akkuyu Bay (İçel, Turkey). Heavy metal contents in soft bodies were measured by an atomic absorption spectrophometer. The means of the amounts of heavy metals with standard errors were estimated as follows: 0.0605 ± 0.00467 µgg-1 Cd, 2.8227 ± 0.24486 µgg-1 Fe, 0.2979 ± 0.02368 µgg-1 Zn, and 0.0355 ± 0.00303 µgg-1 Cu (wet weight) for B. pharaonis, but for P. radiata the means were 0.0058 ± 0.00034 µgg-1 Cd, 0.3682 ± 0.04252 µgg-1 Fe, 0.1579 ± 0.00628 µgg-1 Zn, and 0.0027 ± 0.00018 µgg-1 Cu. In a comparison of the means, the order of magnitude will be Fe, Zn, Cd and Cu for B. pharaonis, and Fe, Zn, Cu and Cd for P. radiata these results were below Turkish legal standards. Therefore, we may conclude that there is no heavy metal pollution in Akkuyu Bay.