Italian National Institute for Environmental Protection and Research, Rome, Italy.
Italian National Institute for Environmental Protection and Research, Rome, Italy.
Mar Pollut Bull. 2017 Dec 15;125(1-2):45-55. doi: 10.1016/j.marpolbul.2017.07.046. Epub 2017 Aug 4.
Guidance Document 25/2010, suggests sediment and biota are the most suitable matrices for the trend monitoring purpose, because they integrate the pollution over time and space. So, from 2005 to 2014, the sediment and biota concentrations of heavy metals (As, Cd, Cr, Hg, Ni, Pb) were analysed in the Vallona Lagoon (northern Adriatic Sea, Italy), widely used for intensive and extensive bivalve farming. The contamination levels in sediment and biota were compared with Environmental Quality Standard (EQS) and threshold levels (TL) for human health. The results identified critical issues related to Cd in sediment samples as well as to Hg and Pb in biota which were not only ascribable to the physiological and seasonal variability of organisms. The Cr and Ni levels in sediment were higher than the EQS. However, the concentration increases at biota stations close to sites where EQS excesses were observed in sediment were not verified.
指导文件 25/2010 建议沉积物和生物群是趋势监测目的最适合的基质，因为它们可以随时间和空间的变化综合反映污染情况。因此，从 2005 年到 2014 年，对意大利北部亚得里亚海瓦洛纳泻湖的沉积物和生物群中的重金属（砷、镉、铬、汞、镍、铅）浓度进行了分析，该泻湖广泛用于贝类的集约和粗放养殖。将沉积物和生物群中的污染水平与环境质量标准（EQS）和人类健康的阈值水平（TL）进行了比较。结果表明，沉积物中 Cd 存在问题，生物群中的 Hg 和 Pb 也存在问题，这不仅归因于生物体的生理和季节性变化。沉积物中的 Cr 和 Ni 水平高于 EQS。然而，在靠近沉积物中 EQS 超标地区的生物群监测站，并未发现浓度增加的情况。
