...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Multivariate Statistical Examination of Spatial and Temporal Patterns of Heavy Metal Contamination in New Bedford Harbor Marine Sediments
【24h】

Multivariate Statistical Examination of Spatial and Temporal Patterns of Heavy Metal Contamination in New Bedford Harbor Marine Sediments

机译：新贝德福德港海洋沉积物中重金属污染的时空格局的多元统计检验

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Thirteen sediment cores were examined for 10 metals and organic carbon along a pollution gradient from highly contaminated sediments in New Bedford Harborto cleaner sediments in Buzzards Bay. Multiple regression of metal content against organic carbon, aluminum, and iron was significant for all metals. However, partial correlation coefficients indicated that organic carbon explained most of the variance for Cr, Ni, Cu, Zn, Cd, and Pb. Conversely, most of the explained variance in Mn was related to iron, while the explained variance in Co was equally distributed between the three factors. The pattern recognition technique principal components analysis (PCA) was also applied to the data and revealed two distinct gradients in the types of metals present in the sediments. The first gradient was between uncontaminated sediments of Buzzards Bay and lesser contaminated sediments from the outer portion of New Bedford Harbor. A second gradient revealed temporal and spatial differences in the types of metals present in the contaminated harbor sediments.
机译：从新贝德福德港的高污染沉积物到巴扎德斯湾的清洁沉积物，按照污染梯度对13个沉积物核心中的10种金属和有机碳进行了检测。金属含量相对于有机碳，铝和铁的多重回归对于所有金属而言都是显着的。但是，部分相关系数表明有机碳解释了Cr，Ni，Cu，Zn，Cd和Pb的大部分变化。相反，Mn的大多数解释方差与铁有关，而Co的解释方差平均分布在三个因素之间。模式识别技术主成分分析（PCA）也应用于数据，并揭示了沉积物中金属类型的两个明显梯度。第一个梯度是在秃鹰湾未污染的沉积物与新贝德福德港外部污染较少的沉积物之间。第二个梯度揭示了受污染港口沉积物中金属类型的时空差异。

著录项

  • 来源
    《Environmental Science & Technology》 |1995年第7期|p.1781-1788|共8页
  • 作者

    JAMES P. SHINE; RAVEENDRA V. IKA; TIMOTHY E. FORD;

  • 作者单位

    Department of Environmental Health, Harvard School of Public Health, 665 Huntington Avenue, Boston, Massachusetts 02115;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号