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首页> 外文期刊>Chemosphere >Effects of untreated hospital effluents on the accumulation of toxic metals in sediments of receiving system under tropical conditions: Case of South India and Democratic Republic of Congo
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Effects of untreated hospital effluents on the accumulation of toxic metals in sediments of receiving system under tropical conditions: Case of South India and Democratic Republic of Congo

机译：热带条件下未经处理的医院污水对接收系统沉积物中有毒金属积累的影响：南印度和刚果民主共和国的案例

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摘要

Physicochemical and ecotoxicological analyses have been performed to assess the quality of sediments receiving untreated hospital effluents from Indian and Democratic Republic of Congo (DRC) hospitals. The sediments were collected monthly and characterized for grain size, organic matter, total organic carbon, total carbon, nitrogen, phosphorus, toxic metals and ecotoxicity. The results highlight the high concentration of toxic metals from the Indian hospital effluent receiving systems, especially for Cr, Cu, As, Zn and Hg. On the other hand, the metal concentrations in the sediment receiving system from DRC are low (e.g. maximum Hg and Zn concentration were 0.46 and 48.84 mg kg~(-1) respectively). Ostracods exposed to sediment samples H2 (September month sample) and H3 (June and September month samples) were found dead after 6 d of exposure whereas the higher mortality rate for Congo sediments was 23% but was accompanied with 33 ± 7% of growth inhibition. The results of this study show the variation of sediment composition on toxic metal levels as well as toxicity related to both, the type of hospitals and the sampling period. Additionally, hospital effluent disposal practices at the study sites can lead to the pollution of water resources and may generate risks for aquatic organisms and human health.
机译：已经进行了物理化学和生态毒理学分析，以评估接受印度和刚果民主共和国（DRC）医院未经处理的医院污水的沉积物质量。每月收集一次沉积物，并对其粒度，有机物，总有机碳，总碳，氮，磷，有毒金属和生态毒性进行表征。结果突出了印度医院污水接收系统中的高浓度有毒金属，尤其是铬，铜，砷，锌和汞。另一方面，DRC的沉积物接收系统中的金属浓度较低（例如，最大Hg和Zn浓度分别为0.46和48.84 mg kg〜（-1））。暴露于沉积物H2（9月月样品）和H3（6月和9月月样品）的兽脚类动物在暴露6 d后被发现死亡，而刚果沉积物的较高死亡率为23％，但伴随着33±7％的生长抑制。这项研究的结果表明，沉积物成分在有毒金属水平上的变化以及与医院类型和采样时间有关的毒性。此外，研究地点的医院废水处理做法可能导致水资源污染，并可能对水生生物和人类健康产生风险。

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  • 来源
    《Chemosphere》 |2013年第6期|1070-1076|共7页
  • 作者

    Josue Ilunga Mubedi; Naresh Devarajan; Severine Le Faucheur; John Kayembe Mputu; Emmanuel K. Atibu; Periyasamy Sivalingam; Kandasamy Prabakar; Pius T. Mpiana; Walter Wildi; John Pote;

  • 作者单位

    Universite Pedagogique Nationale (UPN), Croisement Route de Matadi et Avenue de la Liberation, Quartier Binza/UPN, B.P. 8815, Kinshasa, The Democratic Republic of the Congo;

    Postgraduate and Research Department of Zoology, Jamal Mohamed College, Tiruchirappalli 620 020, Tamil Nadu, India,Faculty of Science, Foret Institute and Institute of Environmental Sciences, University of Geneva, CP416, 1290 Versoix, Switzerland;

    Faculty of Science, Foret Institute and Institute of Environmental Sciences, University of Geneva, CP416, 1290 Versoix, Switzerland;

    Universite Pedagogique Nationale (UPN), Croisement Route de Matadi et Avenue de la Liberation, Quartier Binza/UPN, B.P. 8815, Kinshasa, The Democratic Republic of the Congo;

    University of Kinshasa, Faculty of Science, Department of Chemistry, B.P. 190, Kinshasa XI, The Democratic Republic of the Congo;

    Department of Biotechnology and Genetic Engineering, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India;

    Postgraduate and Research Department of Zoology, Jamal Mohamed College, Tiruchirappalli 620 020, Tamil Nadu, India;

    University of Kinshasa, Faculty of Science, Department of Chemistry, B.P. 190, Kinshasa XI, The Democratic Republic of the Congo;

    Faculty of Science, Foret Institute and Institute of Environmental Sciences, University of Geneva, CP416, 1290 Versoix, Switzerland;

    Universite Pedagogique Nationale (UPN), Croisement Route de Matadi et Avenue de la Liberation, Quartier Binza/UPN, B.P. 8815, Kinshasa, The Democratic Republic of the Congo,Faculty of Science, Foret Institute and Institute of Environmental Sciences, University of Geneva, CP416, 1290 Versoix, Switzerland,University of Kinshasa, Faculty of Science, Department of Chemistry, B.P. 190, Kinshasa XI, The Democratic Republic of the Congo;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hospital effluent; Receiving system; Toxic metals; Ecotoxicology; India; Congo DR;

    机译：医院污水;接收系统;有毒金属;生态毒理学;印度;刚果民主共和国;

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