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Geochemistry and mercury contamination in receiving environments of artisanal mining wastes and identified concerns for food safety

机译:手工采矿废物接收环境中的地球化学和汞污染,并确定了对食品安全的关注

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摘要

Artisanal small-scale gold mining (ASGM) using mercury (Hg) amalgamation has been occurring on Buru Island, Indonesia since early 2012, and has caused rapid accumulation of high Hg concentrations in river, estuary and marine sediments. In this study, sediment samples were collected from several sites downstream of the Mount Botak ASGM site, as well as in the vicinity of the more recently established site at Gogrea where no sampling had previously been completed. All sediment samples had total Hg (THg) concentrations exceeding Indonesian sediment quality guidelines and were up to 82 times this limit at one estuary site. The geochemistry of sediments in receiving environments indicates the potential for Hg-methylation to form highly bioavailable Hg species. To assess the current contamination threat from consumption of local seafood, samples of fish, molluscs and crustaceans were collected from the Namlea fish market and analysed for THg concentrations. The majority of edible tissue samples had elevated THg concentrations, which raises concerns for food safety. This study shows that river, estuary and marine ecosystems downstream of ASGM operations on Buru Island are exposed to dangerously high Hg concentrations, which are impacting aquatic food chains, and fisheries resources. Considering the high dietary dependence on marine protein in the associated community and across the Mollucas Province, and the short time period since ASGM operations commenced in this region, the results warrant urgent further investigation, risk mitigation, and community education.
机译:自2012年初以来,印度尼西亚的布卢岛一直在进行使用汞(Hg)混合的手工小规模金矿开采(ASGM),并已导致河流,河口和海洋沉积物中高汞含量的迅速积累。在这项研究中,沉积物样本是从Botak山ASGM站点下游的几个站点以及最近在Gogrea建立的站点附近收集的,这些站点以前尚未完成采样。所有沉积物样品的总Hg(THg)浓度均超过印度尼西亚沉积物质量准则,并且在一个河口站点的最高汞含量为该限值的82倍。接收环境中沉积物的地球化学表明,汞甲基化有可能形成高生物利用性汞物种。为了评估当前当地食用海鲜造成的污染威胁,从纳姆雷鱼市场上采集了鱼,软体动物和甲壳类动物的样品,并分析了其THg浓度。大多数可食组织样本的THg浓度升高,这引起了食品安全性的担忧。这项研究表明,在布卢岛进行手工和小规模采金作业的下游河流,河口和海洋生态系统暴露于危险的高汞浓度,这正在影响水生食物链和渔业资源。考虑到相关社区和整个Mollucas省的饮食对海洋蛋白质的高度依赖,以及自该地区开始进行手工和小规模采金作业以来的时间很短,研究结果需要紧急的进一步调查,降低风险和社区教育。

著录项

  • 来源
    《Environmental research》 |2017年第1期|407-418|共12页
  • 作者单位

    Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 157, Lismore, NSW, Australia,School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia;

    School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia;

    Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 157, Lismore, NSW, Australia,School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia;

    School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia;

    Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 157, Lismore, NSW, Australia,School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia;

    Department of Chemistry, Faculty of Mathematics and Natural Science, Pattimura University, Ambon, Indonesia;

    Department of Fisheries and Marine Science, Pattimura University, Ambon, Indonesia;

    School of Environment, Science and Engineering Southern Cross University, PO Box 157, Lismore, NSW, Australia,NSW Department of Primary Industries, National Marine Science Centre, PO Box 4321, Coffs Harbour, NSW, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mercury contamination; Seafood; Sediment; Human health risk;

    机译:汞污染;海鲜;沉淀;人类健康风险;

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