• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Springer Open Choice >Surface sediment properties and heavy metal pollution assessment in the Pearl River Estuary China
【2h】

Surface sediment properties and heavy metal pollution assessment in the Pearl River Estuary China

机译：珠江口地表沉积物性质及重金属污染评价

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Grain size and concentrations of heavy metals (arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), lead (Pb), and zinc (Zn)) of 148 surface sediments and activities of 210Pb and heavy metal concetrantions of one sediment core from the Pearl River Estuary were analyzed. The surface sediments were dominated by silt and sandy silt. Sediment type controlled the spatial distribution patterns of the heavy metals. The heavy metal concentrations in the sediments ranged from 3.34 to 37.11 mg/kg for As, 0.06 to 2.06 mg/kg for Cd, 12 to 130 mg/kg for Cr, 5.8 to 170.6 mg/kg for Cu, 0.01 to 0.25 mg/kg for Hg, 23 to 78 mg/kg for Pb, and 32 to 259 mg/kg for Zn. Both contents of clay and organic carbons were significantly positively correlated with heavy metals. The baseline values of elements in the study area were 12.97 mg/kg for As, 0.14 mg/kg for Cd, 68 mg/kg for Cr, 28.9 mg/kg for Cu, 0.08 mg/kg for Hg, 33 mg/kg for Pb, and 92 mg/kg for Zn. The metal enrichment factor (EF) and geoaccumulation index (Igeo) were calculated to assess anthropogenic contamination. Results showed slight to moderate Cd contamination in the region. Principle component analysis indicated that Cd could be attributed to anthropogenic sources; As and Hg were predominantly affected by human activities; and Pb, Cr, Cu, and Zn were associated with both natural and anthropogenic sources.
机译：148个表面沉积物和活动的重金属（砷（As），镉（Cd），铬（Cr），铜（Cu），汞（Hg），铅（Pb）和锌（Zn））的大小和浓度分析了珠江口 210 Pb的含量和一个沉积物核的重金属元素。表层沉积物以粉砂和砂质粉砂为主。沉积物类型控制了重金属的空间分布格局。沉积物中重金属的浓度范围为：砷3.34至37.11 mg / kg，镉0.06至2.06 mg / kg，铬12至130 mg / kg，铜5.8至170.6 mg / kg，0.01至0.25 mg / kg汞的千克，铅的23-78毫克/千克，锌的32-259毫克/千克。粘土和有机碳的含量均与重金属显着正相关。研究区元素的基线值为：砷12.97 mg / kg，镉0.14 mg / kg，铬68 mg / kg，铜28.9 mg / kg，汞0.08 mg / kg，汞33 mg / kg铅，锌为92 mg / kg。计算金属富集因子（EF）和地质积累指数（Igeo）以评估人为污染。结果表明该地区镉污染程度为中度。主成分分析表明，镉可归因于人为来源。砷和汞主要受人类活动影响；铅，铬，铜和锌与天然和人为来源均相关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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