Institut de Recherche pour le Développement (IRD), UMR HydroSciences Montpellier, Université Montpellier 2, Case courrier MSE, Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France.
J Environ Manage. 2013 Oct 15;128:173-81. doi: 10.1016/j.jenvman.2013.05.004. Epub 2013 Jun 5.
Organotin compounds (OTs) are exclusively anthropogenic and have been widely used for their biocidal properties and as stabilizers in various industrial applications. Hence organotins are common pollutants. Their high toxicity has led to their entry on the EU water framework's priority substances' list. However, few studies are available regarding their behaviour in surface waters, in particular, in intermittent Mediterranean rivers. The Vène is an intermittent river located in Languedoc-Roussillon, southern France. It is the main tributary of an important shellfish farming site: the Thau lagoon. The present study aims at establishing the presence of OTs on a 1.5 km long reach of the river into which a waste water treatment plant (WWTP) discharges. The study is carried out during steady-state flow conditions over two consecutive years and investigates potential OTs sources in everyday domestic activities. Routine field monitoring was carried out over a 5 month period during the springs of 2008 and 2009. The results establish the presence of butyltins and octyltins throughout the 1.5 km long reach at concentrations exceeding the maximum allowable concentration levels imposed by the water framework directive. The WWTP is recognized as an important OTs point source; however, using trace and rare earth elements as tracers, an urban stormwater sewage gutter is identified as a secondary source. Its impact on the river's pollutant loads is however variable in time because of flow intermittency. The paper discusses the need for specific monitoring and management schemes for intermittent rivers.
有机锡化合物（OTs）完全是人为产生的，因其具有杀菌特性以及在各种工业应用中的稳定剂而被广泛使用。因此，有机锡是常见的污染物。它们的高毒性导致它们被列入欧盟水框架指令优先物质清单。然而，关于它们在地表水中的行为，特别是在间歇性地中海河流中的行为，研究甚少。Vène 河是法国南部朗格多克-鲁西永地区的一条间歇性河流，是一个重要贝类养殖场——Thau 泻湖的主要支流。本研究旨在确定一条 1.5 公里长的河流中是否存在有机锡，这条河流有一个废水处理厂（WWTP）排放污水。该研究是在连续两年的稳定流量条件下进行的，调查了日常生活中有机锡的潜在来源。在 2008 年和 2009 年春季的 5 个月期间进行了常规现场监测。结果表明，在 1.5 公里长的河段中存在丁基锡和辛基锡，其浓度超过了水框架指令规定的最大允许浓度水平。WWTP 被认为是一个重要的有机锡点源；然而，使用微量元素和稀土元素作为示踪剂，发现城市雨水污水排水沟是一个次要来源。由于间歇性水流，其对河流污染物负荷的影响随时间而变化。本文讨论了对间歇性河流进行特定监测和管理计划的必要性。
