Persistant organochlorines in the Hudson River watershed

多氯联苯、滴滴涕和其他持久性氯代烃的制造和使用 在美国已经停止了。然而，大量的这些有毒物质 化合物仍然分散在环境中，它们的分布和 命运是不完美的。此外，额外的多氯联苯和其他 有机氯化合物继续被添加到环境中，特别是 天然水域，污染沉积物，可被 鱼，然后是人类。调查…的来源和命运 哈德逊分水岭天然水域中的有机氯污染物， 将对沉积物岩心切片进行年代分析。结果来自我们的 在最初的供资期间，已经确定了几个特别关注的领域。一个 纽约州/新泽西州港口西部的氯丹的主要来源将被追踪到 哈肯萨克和帕塞伊克河流域。氯丹是一种重要的 该地区的鱼类污染物及其残留物已在 当地垂钓者水平升高(项目5)。滴滴涕衍生化合物将是 在城市公园的土壤中测量。我们从中央公园湖沉积物中获得的数据 将使用稳定的氯同位素配给进行调查。据我们所知， 这将是这项强大的技术首次应用于研究 多氯联苯。该项目还将涉及对鱼类污染物水平的解释。 来自纽约环境保护部(DEC)的数据将 与城市垂钓者的研究项目建立强有力的联系。植物精华 具有代表性的沉积物将用于生物医学项目2和 3.我们对二恶英来源的研究将把我们与美国环保署超级基金紧密联系在一起 对帕塞伊克河下游利斯特大道80号的调查。最接近的 将与提供痕量金属的项目6进行合作 我们对持续污染的多污染物方法的组成部分 哈德逊分水岭。像过去一样，沉积物样本的采集将 与来自项目6和NYSDEC的科学家以及所有样本 将被共享。

Manufacture and use of PCBs, DDT and other persistent chlorinated hydrocarbons have ceased in the United States. However, large quantities of these toxic compounds remain dispersed in the environment where their distribution and fate are imperfectly characterized. Moreover, additional PCBs and other organochlorines continue to be added to the environment, particularly to natural waters where they contaminate the sediments and can be taken up by fish and then by humans. To investigate the sources and fate of organochlorine contaminants in the natural waters of the Hudson watershed, analyses of dated sediment core sections will be performed. Results from our initial funding period, have defined several areas of particular focus. A major source of chlordane to western NY/NJ harbor will be traced into the Hackensack and Passaic River watersheds. Chlordane is a significant contaminant of fish from this area and its residues have been found at elevated levels in local anglers (project 5). DDT-derived compounds will be measured in soils from urban parks. Our data from Central Park Lake sediments will be investigated using stable chlorine isotope rations. To our knowledge, this will be the first application of this powerful technique to the study of PCBs. This project will also involve interpretation of fish contaminant level data from the NYS Department of Environmental Conservation (DEC) that will produce a strong tie to a project , the urban anglers' study. Extracts of representative sediments will be supplied for use in biomedical projects 2 and 3. Our study of dioxin sources will link us closely to the EPA Superfund investigation of 80 Lister Avenue on the lower Passaic River. The closest collaboration will be with a project 6 which will provide the trace metal component of our multi-contaminant approach to persistent pollution in the Hudson watershed. As in the past, sediment sample collections will done jointly with scientists from project 6 and from the NYSDEC and all samples will be shared.