Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy.
Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy.
Mar Pollut Bull. 2018 Oct;135:1221-1229. doi: 10.1016/j.marpolbul.2018.08.057. Epub 2018 Sep 11.
Surface sediments contamination (heavy metals, organochlorine pesticides, polycyclic aromatic hydrocarbons, polychlorinated dibenzodioxins and dibenzofurans) and benthic community of the Valli di Comacchio, were analysed from 2002 to 2013. Along the studied period, most of analysed pollutants did not exceed thresholds for Good chemical status of sediments. In 2008, a peak of contamination was observed, with total PAHs and OCPs exceeding their threshold. Considering metals, Ni and Cr exceeded their thresholds, but not the background levels for the area, suggesting natural enrichment; conversely Pb exceeded background levels for the area in many samples, but it exceeded its sediment quality thresholds only in few samples (2006, 2009, 2011). Conversely, the ecological status evaluated though AMBI and M-AMBI, was below the Good/Moderated thresholds established by WFD in most of the studied years. In the 11 yrs-study period, the benthic community showed a very weak response to chemical contamination.
2002 年至 2013 年期间，对瓦利迪科马乔（Valli di Comacchio）的表层沉积物污染（重金属、有机氯农药、多环芳烃、多氯二苯并对二恶英和多氯二苯并呋喃）和底栖生物群落进行了分析。在研究期间，大多数分析的污染物未超过沉积物良好化学状况的阈值。2008 年，观察到污染高峰，总多环芳烃和有机氯农药超过了其阈值。就金属而言，镍和铬超过了其阈值，但未超过该地区的背景水平，表明存在自然富集；相反，许多样本中的铅超过了该地区的背景水平，但仅在少数样本（2006 年、2009 年、2011 年）中超过了其沉积物质量阈值。相比之下，通过 AMBI 和 M-AMBI 评估的生态状况，在大多数研究年份中都低于 WFD 设定的良好/中度阈值。在 11 年的研究期间，底栖生物群落对化学污染的反应非常微弱。
