Alvarez-Guerra Manuel, Viguri Javier R, Casado-Martínez M Carmen, DelValls T Angel
Departamento de Ingeniería Química y Química Inorghnica, Escuela Técnica Superior de Ingenieros Industriales y de Telecomunicación (ETSIIT), Universidad de Cantabria, Avenida de Los Castros, s/n, 39005 Santander, Spain.
Integr Environ Assess Manag. 2007 Oct;3(4):539-51. doi: 10.1897/ieam_2007-016.1.
When sediments are removed from aquatic bottoms, they turn into dredged material that must be managed, taking into account its environmental impact. In Part II of this 2-part paper addressing sediment quality assessment and dredged material management in Spain, legislation and criteria used to regulate dredged material disposal at sea in different European countries are reviewed, as are action levels (ALs) derived by different countries used to evaluate management of dredged sediments from Cádiz Bay located on the South Atlantic coast of Spain. Comparison of ALs established for dredged material disposal by different countries reveals orders of magnitude differences in the values established for the same chemical. In Part I of this 2-part paper, review of different sediment quality guideline (SQG) methods used to support sediment quality assessments indicated a great heterogeneity of SQGs, both with regard to the numeric values for a particular chemical and the number of substances for which SQGs have been derived. The analysis highlighted the absence of SQGs for priority substances identified in current European Union water policy. Here, in Part II, the ALs are applied to dredged sediments from Cádiz Bay (South Atlantic coast of Spain), evidencing that the heterogeneity of ALs implemented in the reviewed countries could determine different management strategies. The application of other measurements such as bioassays might offer information useful in identifying a cost-effective management option in a decision-making framework, especially for dredged material with intermediate chemical concentrations.
当从水底清除沉积物时，它们会变成疏浚物料，必须考虑到其环境影响对其进行管理。在这篇关于西班牙沉积物质量评估和疏浚物料管理的两部分论文的第二部分中，回顾了不同欧洲国家用于规范海上疏浚物料处置的立法和标准，以及不同国家用于评估来自西班牙南大西洋海岸加的斯湾疏浚沉积物管理情况的行动水平（AL）。不同国家为疏浚物料处置制定的AL的比较显示，针对同一种化学物质设定的值存在数量级差异。在这篇两部分论文的第一部分中，对用于支持沉积物质量评估的不同沉积物质量指南（SQG）方法的回顾表明，SQG在很大程度上存在异质性，这体现在特定化学物质的数值以及已得出SQG的物质数量方面。分析突出了当前欧盟水政策中确定的优先物质缺乏SQG的情况。在此，在第二部分中，将AL应用于来自加的斯湾（西班牙南大西洋海岸）的疏浚沉积物，表明所审查国家实施的AL的异质性可能决定不同的管理策略。应用其他测量方法，如生物测定法，可能会提供有助于在决策框架中确定具有成本效益的管理选项的信息，特别是对于化学浓度处于中间水平的疏浚物料。
