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DELVE: Development and validation of first generation chemical sensors for icy ecosystems

DELVE：用于冰冷生态系统的第一代化学传感器的开发和验证

基本信息

批准号：
NE/I012974/1
负责人：
Matt Mowlem
金额：
$ 59.16万
依托单位：
NATIONAL OCEANOGRAPHY CENTRE
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2011
资助国家：
英国
起止时间：
2011 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FI012974%2F1
关键词：
DELVE Development validation first generation

项目摘要

Glaciers and ice sheets are one of the least explored parts of the Earth's surface, and are now known to harbor significant populations of micro-organisms despite the challenging environmental conditions (e.g. extreme cold, desiccation, freezing and high pressure under ice sheets). Many of these microbes accelerate chemical weathering and supply nutrients to downstream ecosystems. A better knowledge of these processes is widely recognized as important for understanding: 1) global impacts of glaciers/ice sheets on the cycling of carbon and nutrients 2) biodiversity and life in extreme environments (e.g. Antarctic Subglacial Lakes) and 3) water flow beneath ice sheets as inferred from meltwater chemistry. Currently, the toolkits available to glaciologists to advance knowledge in these areas are very limited, and a technological leap is required to engage fully in future science campaigns. Building on previous work, this proposal aims to develop the first generation of compact chemical sensors for use in glaciers and ice sheets. While much of this technology has been evaluated for use in the oceans, it has not been assessed or modified for application in icy environments. We will take this technology and evaluate its performance under icy conditions (e.g. at low temperature, under freeze/thaw, at high pressure and with glacial meltwater sample types). This will be followed by design changes and further testing, culminating in a final demonstration of prototype instruments in Svalbard, Norwegian Arctic. These developments will provide key and rate limiting technology for future glacial science, and will have application in subglacial lake exploration (e.g. Subglacial Lake Ellsworth, Antarctica), in marine under-ice operations (e.g. Autosub under ice), and across a wide range of icy ecosystems where in situ measurements are desirable. This work is a forerunner to high impact international science campaigns requiring the development of purpose-built measuring systems that employ a comprehensive array of chemical sensor (e.g. the Lake Ellsworth Exploration Programme, the 'Basal Conditions on Rutford Ice Stream: Bed Access, Monitoring and Ice Sheet History' (BEAMISH) and the US-funded WISSARD programme, with which we have strong links). It also has strong relevance to water quality monitoring in freshwater environments, which will be explored via collaboration with the Environment Agency, UK.

冰川和冰原是地球表面探索最少的部分之一，尽管环境条件具有挑战性（例如冰原下的极冷、干燥、冰冻和高压），但目前已知它们仍蕴藏着大量微生物。许多微生物会加速化学风化并为下游生态系统提供营养。人们普遍认为，更好地了解这些过程对于理解以下内容非常重要：1）冰川/冰盖对碳和营养物循环的全球影响2）极端环境（例如南极冰下湖）中的生物多样性和生命以及3）根据融水化学推断的冰盖下的水流。目前，冰川学家可用于增进这些领域知识的工具包非常有限，需要实现技术飞跃才能充分参与未来的科学活动。该提案以之前的工作为基础，旨在开发第一代用于冰川和冰盖的紧凑型化学传感器。虽然这项技术的大部分已针对在海洋中的使用进行了评估，但尚未针对在冰冷环境中的应用进行评估或修改。我们将采用这项技术并评估其在冰冷条件下的性能（例如，在低温、冻融、高压和冰川融水样品类型下）。随后将进行设计更改和进一步测试，最终在挪威北极斯瓦尔巴群岛进行原型仪器的最终演示。这些进展将为未来冰川科学提供关键和速率限制技术，并将应用于冰下湖泊勘探（例如南极洲的埃尔斯沃斯冰下湖）、冰下海洋作业（例如冰下 Autosub）以及需要进行原位测量的各种冰冷生态系统。这项工作是具有高影响力的国际科学活动的先行者，需要开发采用一系列全面的化学传感器的专用测量系统（例如埃尔斯沃思湖勘探计划、“拉特福德冰流的基本条件：冰床访问、监测和冰盖历史”(BEAMISH) 以及美国资助的 WISSARD 计划，我们与该计划有密切的联系）。它还与淡水环境中的水质监测有很强的相关性，将通过与英国环境局的合作进行探索。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

An automated microfluidic colourimetric sensor applied in situ to determine nitrite concentration

DOI：
10.1016/j.snb.2011.02.042
发表时间：
2011-08-01
期刊：
SENSORS AND ACTUATORS B-CHEMICAL
影响因子：
8.4
作者：
Beaton, Alexander D.;Sieben, Vincent J.;Morgan, Hywel
通讯作者：
Morgan, Hywel

Determination of dissolved oxygen in the cryosphere: a comprehensive laboratory and field evaluation of fiber optic sensors.

DOI：
10.1021/es102571j
发表时间：
2011-01
期刊：
Environmental science & technology
影响因子：
11.4
作者：
E. Bagshaw;J. Wadham;M. Mowlem;M. Tranter;J. Eveness;A. Fountain;J. Telling
通讯作者：
E. Bagshaw;J. Wadham;M. Mowlem;M. Tranter;J. Eveness;A. Fountain;J. Telling

Realistic measurement uncertainties for marine macronutrient measurements conducted using gas segmented flow and Lab-on-Chip techniques.

使用气体分段流和芯片实验室技术进行海洋常量营养素测量的实际测量不确定性。