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首页> 外文期刊>Environmental Science & Technology >Bioconcentration of Organotin Cations during Molting Inhibits Heterocypris incongruens Growth
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Bioconcentration of Organotin Cations during Molting Inhibits Heterocypris incongruens Growth

机译：蜕皮过程中有机素阳离子的生物浓度抑制杂益杂项incongruens生长

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摘要

The densely populated North Sea region encompasses catchments of rivers such as Scheldt and Meuse. Herein, agricultural, industrial, and household chemicals are emitted, transported by water, and deposited in sediments, posing ecological risks. Though sediment monitoring is often costly and time-intensive, modeling its toxicity to biota has received little attention. Due to high complexity of interacting variables that induce overall toxicity, monitoring data only sporadically validates current models. Via a range of concepts, we related bio-physicochemical constituents of sediment in Flanders to results from toxicity bioassays performed on the ostracod Heterocypris incongruens. Depending on the water body, we explain up to 90% of the variance in H. incongruens growth. Though variable across Flanders' main water bodies, organotin cations and ammonia dominate the observed toxicity according to toxic unit (TU) assessments. Approximately 10% relates to testing conditions/setups, species variabilities, incoherently documented pollutant concentrations, and/or bio-physicochemical sediment properties. We elucidated the influence of organotin cations and ammonia relative to other metal(oxides) and biocides. Surprisingly, the tributylin cation appeared ～1000 times more toxic to H. incongruens as compared to "single-substance" bioassays for similar species. We inferred indirect mixture effects between organotin, ammonia, and phosphate. Via chemical speciation calculations, we observed strong physicochemical and biological interactions between phosphate and organotin cations. These interactions enhance bioconcentration and explain the elevated toxicity of organotin cations. Our study aids water managers and policy makers to interpret monitoring data on a mechanistic basis. As sampled sediments differ, future modeling requires more emphasis on characterizing and parametrizing the interactions between bioassay constituents. We envision that this will aid in bridging the gap between testing in the laboratory and field observations.
机译：茂密人口稠密的北海地区包括普雷特和梅苏等河流集水。这里，农业，工业和家庭化学品被排放，用水运输，并沉积在沉积物中，造成生态风险。虽然沉积物监测往往是昂贵且时间密集的，但对Biota毒性建模的毒性很少受到关注。由于诱导整体毒性的相互作用变量的高度复杂性，监测数据只均散向上验证当前模型。通过一系列概念，我们在挥霍杂志中的毒性生物测量中的沉积物中的生物物理化学成分与奥斯特拉科克杂交产物incongruens进行相关。根据水体，我们解释了H. Incongruens的增长的高达90％的差异。虽然跨越挥发牛肉的主要水体，有机锡阳离子和氨质统治着观察到的毒性，根据有毒单位（涂层）评估。大约10％涉及测试条件/设置，物种可变性，不连贯记录的污染物浓度和/或生物物理化学沉积物。我们阐明了有机锡阳离子和氨相对于其他金属（氧化物）和杀生物剂的影响。令人惊讶的是，与类似物种的“单一物质”生物测量相比，Tributylin阳离子似乎对H. Incongruens毒性〜1000倍。我们推断有机锡，氨和磷酸盐之间的间接混合物效应。通过化学品质计算，我们观察到磷酸盐和有机锡阳离子之间的强烈物理化学和生物相互作用。这些相互作用增强了生物浓缩，解释了有机素阳离子的尿性升高。我们的研究助致水管理人员和决策者在机械基础上解释监测数据。随着采样沉积物的不同，未来的建模需要更加重视表征和参加生物测定成分之间的相互作用。我们设想这将有助于弥合在实验室和现场观察中测试之间的差距。

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  • 来源
    《Environmental Science & Technology》 |2020年第22期|14288-14301|共14页
  • 作者

    Tom M. Nolte; Ward De Cooman; Jos P. M. Vink; Raf Elst; Els Ryken; Ad M. J. Ragas; A. Jan. Hendriks;

  • 作者单位

    Department of Environmental Science Institute for Water and Wetland Research Radboud University Nijmegen 6500 GL Nijmegen the Netherlands;

    Flanders Environment Agency (VMM) B- 9300 Aalst Belgium;

    Unit Soil and Subsurface Systems Deltares 3508 AL Utrecht the Netherlands;

    Flanders Environment Agency (VMM) B-9300 Aalst Belgium;

    Flanders Environment Agency (VMM) B-9300 Aalst Belgium;

    Department of Environmental Science Institute for Water and Wetland Research Radboud University Nijmegen 6500 GL Nijmegen the Netherlands;

    Department of Environmental Science Institute for Water and Wetland Research Radboud University Nijmegen 6500 GL Nijmegen the Netherlands;

  • 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);
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