Center for Research and Innovation in Toxicology, Technical University of Catalonia, Campus Terrassa zona IPCT Ctra Nac.150. km 15, 08227, Terrassa, Spain.
Environ Monit Assess. 2013 Aug;185(8):6783-92. doi: 10.1007/s10661-013-3064-z. Epub 2013 Jan 17.
The aim of this study was to determine heavy metal content (As, Cd, Cu, Hg, Cd, Pb, and Zn) in oysters transplanted in Ebro Delta bays (Alfacs and Fangar) where oysters are traditionally cultured for human consumption. Metal body burdens were monitored weekly during the period of maximal agriculture activity from May to June in 2008 and 2009. Results indicate that regardless of the high levels of metals reported in biota living in Ebro River, metal levels in oysters from both bays were similar to those found in unpolluted areas and far below the maximum limits of tolerance recommended by the European Commission. Nevertheless, metal accumulation patterns in oysters differentiate two sources of pollution: one coming from agriculture activities within the Ebro's delta for As, Cd, Cu, and Zn and other coming from Ebro River probably related to industrial activities upstream (Hg, Pb) or to lead shot pellets form hunting activities (Pb). Reported results, thus, are in concern with previous studies and indicate that metallic pollutants do not affect oysters cultures in Ebro Delta associated bays.
本研究旨在测定移植到埃布罗三角洲海湾（Alfacs 和 Fangar）的牡蛎中的重金属含量（砷、镉、铜、汞、铅和锌），这些海湾传统上用于人类消费。2008 年和 2009 年 5 月至 6 月农业活动最活跃期间，每周监测金属体内负荷。结果表明，尽管埃布罗河生物区系中的金属含量很高，但两个海湾的牡蛎中的金属含量与未受污染地区的金属含量相似，远低于欧盟委员会建议的最大耐受限度。然而，牡蛎中金属的积累模式区分了两种污染来源：一种来自埃布罗三角洲内的农业活动，涉及砷、镉、铜和锌，另一种来自埃布罗河，可能与上游的工业活动有关（汞、铅）或与狩猎活动中的铅弹有关（铅）。因此，报告的结果与以前的研究一致，表明金属污染物不会影响埃布罗三角洲相关海湾的牡蛎养殖。
