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首页> 外文期刊>Environmental Science & Technology >Widespread Micropollutant Monitoring in the Hudson River Estuary Reveals Spatiotemporal Micropollutant Clusters and Their Sources
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Widespread Micropollutant Monitoring in the Hudson River Estuary Reveals Spatiotemporal Micropollutant Clusters and Their Sources

机译：哈德逊河河口的广泛微污染物监测揭示了时空微污染物簇及其来源

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摘要

The objective of this study was to identify sources of micropollutants in the Hudson River Estuary (HRE). We collected 127 grab samples at 17 sites along the HRE over 2 years and screened for up to 200 micropollutants. We quantified 168 of the micropollutants in at least one of the samples. Atrazine, gabapentin, metolachlor, and sucralose were measured in every sample. We used data-driven unsupervised methods to cluster the micropollutants on the basis of their spatiotemporal occurrence and normalized-concentration patterns. Three major clusters of micropollutants were identified: ubiquitous and mixed-use (core micropollutants), sourced from sewage treatment plant outfalls (STP micropollutants), and derived from diffuse upstream sources (diffuse micropollutants). Each of these clusters was further refined into subclusters that were linked to specific sources on the basis of relationships identified through geospatial analysis of watershed features. Evaluation of cumulative loadings of each subcluster revealed that the Mohawk River and Rondout Creek are major contributors of most core micropollutants and STP micropollutants and the upper HRE is a major contributor of diffuse micropollutants. These data provide the first comprehensive evaluation of micropollutants in the HRE and define distinct spatiotemporal micropollutant clusters that are linked to sources and conserved across surface water systems around the world.
机译：这项研究的目的是确定哈德逊河河口（HRE）中的微污染物来源。我们在两年内沿HRE的17个地点收集了127个抓取样品，并筛选了多达200种微量污染物。我们对至少一个样品中的168种微量污染物进行了定量。在每个样品中都测定了r去津，加巴喷丁，异丙甲草胺和三氯蔗糖。我们使用数据驱动的无监督方法基于时空出现和标准化浓度模式对微污染物进行聚类。确定了三个主要的微污染物群：普遍存在的和混合使用的（核心微污染物），它们来自污水处理厂的排污口（STP微污染物），并且来自上游的分散源（弥散的微污染物）。根据通过分水岭特征的地理空间分析确定的关系，将这些集群中的每个集群进一步细分为与特定资源相关联的子集群。对每个子集群的累积负荷的评估显示，莫霍克河和Rondout Creek是大多数核心微污染物和STP微污染物的主要贡献者，而上部HRE是弥散性微污染物的主要贡献者。这些数据首次对HRE中的微污染物进行了全面评估，并定义了与时空相关的不同时空微污染物簇，这些簇与水源相关，并且在世界各地的地表水系统中得到保护。

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  • 来源
    《Environmental Science & Technology》 |2018年第11期|6187-6196|共10页
  • 作者

    CoreyM. G. Carpenter; Damian E. Helbling;

  • 作者单位

    School of Civil and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States;

    School of Civil and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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