摘要：The Water Framework Directive (WFD) obliges Member State to achieve a good chemical
and ecological status of all surface waterbodies within a specific deadline; in particular the good
chemical status is a condition in which the concentrations of priority substances do not exceed the
environmental quality standards (EQS) in order to protect human health and the environment; the
WFD states that EQS have to be derived for water, sediment or biota. The good chemical status
could be difficult to achieve in the historical marine contaminated water bodies due to the presence
of high concentrations of toxic, bioaccumulative and persistent substances in the sediments. In
these specific highly contaminated sites there is a need to apply an ecosystem approach in which, as
a first step, less stringent sediment EQS are defined in order to take the appropriate measures for the
protection of aquatic ecosystems and human health; the long-term goal for these sites is the achievement
of the good chemical status foreseen by the WFD. The methodology applied in Italy for the
sediment quality assessment of marine contaminated sites is explained in this paper.
关键词：ecosistemi acquatici, standard di qualità ambientale, siti contaminati, Direttiva Quadro Acque, sedimenti.
