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首页> 外文期刊>Environmental toxicology and chemistry >CONTAMINATION AND SCREENING LEVEL TOXICITY OF SEDIMENTS FROM REMEDIATED AND UNREMEDIATED WETLANDS NEAR SYDNEY, AUSTRALIA
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CONTAMINATION AND SCREENING LEVEL TOXICITY OF SEDIMENTS FROM REMEDIATED AND UNREMEDIATED WETLANDS NEAR SYDNEY, AUSTRALIA

机译：来自澳大利亚悉尼附近已修复和未修复湿地的沉积物的污染度和清除水平

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摘要

The present study assessed contamination and toxicity of sediments from seven remediated and remnant wetland sites within Sydney Olympic Park, Australia, and four unrcmediated sites adjacent to its boundary using chemical analysis and a luminescent bacterial biosensor assay (Escherichia coli). Concentrations of metals (Pb, Cr, Cu, Ni, Zn, Cd, and As) and persistent organic chemicals (DDT and its metabolites, dichlorodiphenyldichloroethane and dichlorodiphenyldichloroethylene; polycyclic aromatic hydrocarbons; polychlorinated biphenyls; and polychlorinated dibenzo-p-dioxins and dibenzofurans) in sediments and their pore-water samples were determined. Zinc concentrations were the highest of the metals in the sediments (84-618 mg/kg), and at eight sites, metal concentrations in sediments exceeded the Australian ecological trigger values for Pb, Zn, and Ni. Concentrations of organic contaminants in the sediments exceeded the trigger values at ail 11 sites for DDTs, at 6 sites for polycyclic aromatic hydrocarbons, and 5 sites for polychlorinated biphenyls. Sediment samples from the four unremediated sites outside the Sydney Olympic Park had dioxin concentrations greater than 200 pg (toxic equivalency per gram). The same four sites were identified as contaminated in pore-water toxicity tests with the luminescent biosensor, generally consistent with the bioavailable fractions of the contaminants (pore-water and Tenax~® extraction data), as well as dioxin levels, in the sediments. Preliminary toxicity identification and evaluation tests of the pore water from the four sites outside the park demonstrated that organic contaminants were the main cause of toxicity to E. coli, with no evidence that metals contributed to the toxicity of the pore water.
机译：本研究使用化学分析和发光细菌生物传感器测定法（大肠杆菌）评估了澳大利亚悉尼奥林匹克公园内七个补救和残余湿地站点以及毗邻其边界的四个未经修复的站点的沉积物的污染和毒性。金属（Pb，Cr，Cu，Ni，Zn，Cd和As）和持久性有机化学品（DDT及其代谢物，二氯二苯基二氯乙烷和二氯二苯基二氯乙烯；多环芳烃；多氯联苯；以及多氯二苯并对二恶英和二苯并呋喃）的浓度确定了沉积物中的污染物及其孔隙水样品。锌含量是沉积物中金属含量最高的（84-618 mg / kg），并且在八个地点，沉积物中的金属浓度超过了澳大利亚对Pb，Zn和Ni的生态触发值。沉积物中有机污染物的浓度在所有11个滴滴涕，多环芳烃的6个点和多氯联苯的5个点均超过了触发值。悉尼奥林匹克公园外四个未经修复的站点的沉积物样本中的二恶英浓度均大于200 pg（每克毒性当量）。使用发光生物传感器在孔隙水毒性测试中确定了相同的四个位置，该位置通常与沉积物中污染物的生物可利用分数（孔隙水和Tenax®提取数据）以及二恶英水平一致。对公园外四个地点的毛孔水进行的初步毒性鉴定和评估测试表明，有机污染物是对大肠杆菌产生毒性的主要原因，没有证据表明金属会导致毛孔水的毒性。

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  • 来源
    《Environmental toxicology and chemistry》 |2009年第10期|2052-2060|共9页
  • 作者

    Guang-Guo Ying; Christopher A. Rawson; Rai S. Kookana; Ping-An Peng; Michael S.J. Warne; Louis A. Tremblay; Edwina Laginestra; John C. Chapman; Richard P. Lim;

  • 作者单位

    Commonwealth Scientific and Industrial Research Organisation, Land and Water Division, Centre for Environmental Contaminants Research, Private Mail Bag 2, Glen Osmond, South Australia 5064, Australia Statc Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640, China;

    Institute of Water and Environmental Resource Management and Department of Environmental Sciences, University of Technology,Sydney, P.O. Box 123 Broadway, New South Wales 2001, Australia;

    Commonwealth Scientific and Industrial Research Organisation, Land and Water Division, Centre for Environmental Contaminants Research, Private Mail Bag 2, Glen Osmond, South Australia 5064, Australia;

    Statc Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640, China;

    Commonwealth Scientific and Industrial Research Organisation, Land and Water Division, Centre for Environmental Contaminants Research, Private Mail Bag 2, Glen Osmond, South Australia 5064, Australia;

    Landcare Research, P.O. Box 40, Lincoln 7640, New Zealand;

    Sydney Olympic Park Authority, Figtree Drive, Sydney Olympic Park, New South Wales 2127, Australia;

    Centre for Ecotoxicology, Department of Environment and Climate Change, Lidcombe, New South Wales 2065, Australia;

    Institute of Water and Environmental Resource Management and Department of Environmental Sciences, University of Technology,Sydney, P.O. Box 123 Broadway, New South Wales 2001, Australia;

  • 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
  • 关键词

    metals; organic contaminants; toxicity; pore water; toxicity identification evaluation;

    机译：金属;有机污染物;毒性;孔隙水毒性鉴定评估;

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