Instituto Superior de Tecnologías y Ciencias Aplicadas, 6163, 10600, La Habana, Cuba.
Bull Environ Contam Toxicol. 2010 Jan;84(1):136-40. doi: 10.1007/s00128-009-9898-y. Epub 2009 Nov 14.
Levels of iron, copper, zinc and lead were determined in sediments and soft tissue of the oyster Crassostrea rhizophorae collected from Guacanayabo Gulf, Cuba. Metal-to-Iron ratio in sediments shows an average enrichment for Cu (5,1), Pb (11,7) and Zn (1,3) in the last 20 years. Metal concentrations found in soft tissue of C. rhizophorae are site dependent. The average biota-sediment accumulation factors (BSAFs) obtained for Fe, Cu and Pb are less than unity in all cases, indicating that only a little fraction of Cu and Pb in the sediments is bioavailable, independently of their enrichments. Zinc has an average BSAF value of 2.4 and may represent a serious impact in the area. The concentrations of zinc and copper in some of the oysters are above typical public health recommended limits.
对取自古巴瓜卡纳亚博湾的牡蛎 Crassostrea rhizophorae 的沉积物和软组织中的铁、铜、锌和铅水平进行了测定。过去 20 年来，沉积物中的金属与铁的比值表明 Cu（5.1）、Pb（11.7）和 Zn（1.3）有平均富集。C. rhizophorae 软组织中的金属浓度取决于地点。在所有情况下，获得的铁、铜和铅的生物沉积物积累因子（BSAF）平均值均小于 1，表明沉积物中只有一小部分 Cu 和 Pb 是生物可利用的，而与它们的富集无关。锌的平均 BSAF 值为 2.4，可能对该地区造成严重影响。一些牡蛎中锌和铜的浓度高于典型的公共卫生建议限量。
