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首页> 外文学位 >A spatial and statistical investigation of dioxin-furan contamination in the sediments of the Hudson-Raritan Estuary.
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A spatial and statistical investigation of dioxin-furan contamination in the sediments of the Hudson-Raritan Estuary.

机译：哈德逊-拉里坦河口沉积物中二恶英呋喃污染的空间和统计调查。

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摘要

Sediment sampling results from a number of studies were examined for the spatial, statistical and temporal patterns in dioxin concentration and dioxin congener patterns. Principal component analysis and cluster analysis were used to group the sediment samples into a smaller set of variables. The spatial and temporal distribution of these derived data were examined with respect to industrial activity, cultural trends and industrial accidents. A GIS was used to analyze sample points for spatial correlation with sources of dioxin contamination. Time horizons were established using Cesium 137 and Lead 210 activities and historical bathymetric.; The results of these analyses indicate that current deposition of dioxin contamination in the Harbor Estuary is dominated by higher chlorinated dioxin furans from combustion sources, such as automobiles, trucks and to a more limited extent, municipal and industrial incineration. Subsurface samples show a more complex array of dioxin-furan congener patterns with numerous dioxin sources including combustion sources, chemical discharges and sewage treatment plants. Some of the patterns are not found in the dioxin-furan source literature, they may result from historical industrial or combustion processes that have been banned or discontinued. The radioisotope and bathymetric dating procedures established time frames for the dioxin-furan congener patterns.; The most significant single source of dioxin contamination in the Harbor Estuary is the former Diamond Alkali Site, on the Lower Passaic River. Long-term production of 2,4,5-trichlorophenoxy acetic acid (2,4,5-T) and an industrial accident in 1960 released massive amounts of dioxin contamination into the adjacent Passaic River, leaving a distinct pattern of dioxins, primarily 2,3,7,8-tetrachlorinated dibenzo dioxin. Two of the clusters identified result from contamination at this site; one represents long term production of 2,4,5-T, while the other is a unique signature from the 1960 explosion and fire. Although largely buried this hot spot of contamination is close to the surface in a number of locations. This represents a threat to biota due to the potential for reintroduction into biologically active zone as well as a barrier to human use of the Lower Passaic River for manufacturing and recreational boating.
机译：审查了许多研究的沉积物采样结果，以了解二恶英浓度和二恶英同类物模式的空间，统计和时间模式。主成分分析和聚类分析用于将沉积物样本分组为较小的变量集。对这些衍生数据的时空分布进行了工业活动，文化趋势和工业事故方面的检查。地理信息系统用于分析样品点与二恶英污染源的空间相关性。时间跨度是利用铯137和铅210的活动和历史测深确定的。这些分析的结果表明，目前海港河口中的二恶英污染沉积物主要来自燃烧源（如汽车，卡车），在一定程度上还包括市政和工业焚烧中的高氯二恶英呋喃。地下样品显示了更复杂的二恶英-呋喃同源物模式阵列，其中包括燃烧源，化学排放物和污水处理厂等多种二恶英来源。在二恶英呋喃的来源文献中找不到某些模式，它们可能是由于历史性的工业或燃烧过程被禁止或中断而产生的。放射性同位素和测深测年程序确定了二恶英-呋喃同源物模式的时间框架。港口河口中最重要的二恶英污染源是帕西克河下游的原钻石碱厂。长期生产2,4,5-三氯苯氧基乙酸（2,4,5-T）和1960年的工业事故将大量的二恶英污染释放到邻近的Passaic河中，留下了明显的二恶英模式，主要是2 ，3,7,8-四氯二苯并二恶英。确定的两个集群是由于该地点的污染造成的；一个代表2,4,5-T的长期生产，另一个代表1960年爆炸和大火的独特特征。尽管大部分被掩埋，但该污染的热点在许多位置都靠近表面。由于有可能再次引入生物活性区，这对生物群构成威胁，并且对人类使用下帕西克河进行制造和休闲划船构成障碍。

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  • 作者

    Hansen, William John.;

  • 作者单位

    City University of New York.;

  • 授予单位 City University of New York.;
  • 学科 Geology.; Environmental Sciences.; Geochemistry.; Agriculture Soil Science.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 295 p.
  • 总页数 295
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;环境科学基础理论;地质学;土壤学;
  • 关键词

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