Environmental Pollution as a Marine Tracer - Measuring and Modelling Anthropogenic Lead in the Indian Ocean

环境污染作为海洋示踪剂 - 印度洋人为铅的测量和建模

基本信息

  • 批准号:
    2607467
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Studentship
  • 财政年份:
    2021
  • 资助国家:
    英国
  • 起止时间:
    2021 至 无数据
  • 项目状态:
    未结题

项目摘要

Background: Human activities have increased the flux of lead (Pb) to the environment by more than an order of magnitude. The combustion of leaded gasoline, which peaked in the 1970s before a gradual global phase-out, thereby generated particularly strong Pb emissions. In the oceans, the effect of Pb pollution is clearly recorded, first in rising and then falling Pb concentrations in surface waters of the North Atlantic. However, Pb levels are still increasing in other areas, such as the Indian Ocean, due to the lag in phase-out between different countries and contributions from industrial sources, which also emit large quantities of Pb.The massive pollution spike of anthropogenic Pb can be used to study the marine cycle of Pb. The rationale is that Pb emissions remain in the atmosphere for only a short time before they are deposited in the ocean. A particular advantage of the Pb tracer is that the element has a distinct isotopic fingerprint. This fingerprint can be traced in the ocean, where it reveals from which source and region and even when the Pb was emitted. This enables, on timescales of decades to centuries, the tracking of marine Pb, regardless of whether it is of natural origin from dust inputs or derived from anthropogenic sources, such as leaded gasoline, coal burning or smelting. As such, the isotopic signature of Pb can also be used to study processes within the ocean, such as the movement of water masses and ocean biogeochemistry.The Project: This project will target isotopic analysis of unique seawater, aerosol and river samples from India and the Indian Ocean, made possible through a collaboration between Imperial College and the National Institute of Oceanography in India . The new results will allow us to investigate Pb emissions from the rapidly developing countries that border the Indian Ocean, where Pb emissions have increased significantly in the last 40 years. Sample processing and analyses will be carried out in the clean room and mass spectrometry facilities of the MAGIC Laboratories at the Department of Earth Science & Engineering, Imperial College London (http://www.imperial.ac.uk/earth-science/research/research-groups/magic/). The group is one of only a handful of laboratories world-wide where these challenging analyses are routinely conducted. Results will subsequently be used to model the Pb cycle, both in terms of atmospheric inputs, as well as in terms of ocean biogeochemistry. You will be part of the GEOTRACES program (www.geotraces.org), an international study of the marine cycles of trace elements and isotopes with the mission to identify processes and quantify fluxes hat control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions.The project is suitable for a student with a background in oceanography, chemistry, geology or an equivalent qualification and can be focused in a variety of directions.
背景:人类活动增加了铅(Pb)的环境通量超过一个数量级。含铅汽油的燃烧在1970年代达到高峰,随后在全球逐步淘汰,因此产生了特别强烈的铅排放。在海洋中,铅污染的影响被清楚地记录下来,首先是北大西洋表层沃茨中铅浓度的上升,然后是下降。然而,铅水平仍在增加,在其他地区,如印度洋,由于不同国家之间的逐步淘汰的滞后和工业源的贡献,这也排放大量的铅。大量的人为铅污染尖峰可以用来研究海洋循环的铅。其理由是,铅排放物在大气中停留的时间很短,然后就会沉积到海洋中。Pb示踪剂的一个特别优点是该元素具有独特的同位素指纹。这种指纹可以在海洋中追踪,它揭示了铅的来源和地区,甚至是何时排放的。这使得在几十年到几百年的时间尺度上,跟踪海洋铅,无论它是来自灰尘输入的自然来源还是来自人为来源,如含铅汽油,燃煤或冶炼。因此,铅的同位素特征也可用于研究海洋内部的过程,如水团的运动和海洋生物地球化学。项目:该项目的目标是对印度和印度洋独特的海水、气溶胶和河流样本进行同位素分析,这是通过帝国理工学院和印度国家海洋学研究所之间的合作实现的。新的结果将使我们能够调查印度洋沿岸快速发展国家的铅排放量,这些国家的铅排放量在过去40年中显着增加。样品处理和分析将在伦敦帝国理工学院地球科学与工程系MAGIC实验室的洁净室和质谱设施中进行(http://www.imperial.ac.uk/earth-science/research/research-groups/magic/)。该小组是世界上少数几个定期进行这些具有挑战性的分析的实验室之一。结果将随后用于模拟铅循环,无论是在大气输入方面,以及在海洋地球化学方面。您将成为GEOTRACES计划(www.example.com)的一部分www.geotraces.org,这是一项对微量元素和同位素的海洋循环进行国际研究的使命,旨在确定控制海洋中关键微量元素和同位素分布的过程和量化通量,并确定这些分布对环境条件变化的敏感性。地质学或同等资格,可以集中在各种方向。

项目成果

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其他文献

吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
  • DOI:
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    0
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LiDAR Implementations for Autonomous Vehicle Applications
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
生命分子工学・海洋生命工学研究室
生物分子工程/海洋生物技术实验室
  • DOI:
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    0
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
  • DOI:
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    0
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
  • DOI:
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的其他文献

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{{ truncateString('', 18)}}的其他基金

An implantable biosensor microsystem for real-time measurement of circulating biomarkers
用于实时测量循环生物标志物的植入式生物传感器微系统
  • 批准号:
    2901954
  • 财政年份:
    2028
  • 资助金额:
    --
  • 项目类别:
    Studentship
Exploiting the polysaccharide breakdown capacity of the human gut microbiome to develop environmentally sustainable dishwashing solutions
利用人类肠道微生物群的多糖分解能力来开发环境可持续的洗碗解决方案
  • 批准号:
    2896097
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
A Robot that Swims Through Granular Materials
可以在颗粒材料中游动的机器人
  • 批准号:
    2780268
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Likelihood and impact of severe space weather events on the resilience of nuclear power and safeguards monitoring.
严重空间天气事件对核电和保障监督的恢复力的可能性和影响。
  • 批准号:
    2908918
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Proton, alpha and gamma irradiation assisted stress corrosion cracking: understanding the fuel-stainless steel interface
质子、α 和 γ 辐照辅助应力腐蚀开裂:了解燃料-不锈钢界面
  • 批准号:
    2908693
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Field Assisted Sintering of Nuclear Fuel Simulants
核燃料模拟物的现场辅助烧结
  • 批准号:
    2908917
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Assessment of new fatigue capable titanium alloys for aerospace applications
评估用于航空航天应用的新型抗疲劳钛合金
  • 批准号:
    2879438
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Developing a 3D printed skin model using a Dextran - Collagen hydrogel to analyse the cellular and epigenetic effects of interleukin-17 inhibitors in
使用右旋糖酐-胶原蛋白水凝胶开发 3D 打印皮肤模型,以分析白细胞介素 17 抑制剂的细胞和表观遗传效应
  • 批准号:
    2890513
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
CDT year 1 so TBC in Oct 2024
CDT 第 1 年,预计 2024 年 10 月
  • 批准号:
    2879865
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship
Understanding the interplay between the gut microbiome, behavior and urbanisation in wild birds
了解野生鸟类肠道微生物组、行为和城市化之间的相互作用
  • 批准号:
    2876993
  • 财政年份:
    2027
  • 资助金额:
    --
  • 项目类别:
    Studentship

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