Integrated platform for the characterisation of the seawater carbonate chemistry for Chemical Oceanography and Marine Global Change Biology

用于化学海洋学和海洋全球变化生物学的海水碳酸盐化学表征的综合平台

• 批准号: RTI-2021-00515
• 负责人: Calosi, Piero
• 金额: $ 10.64万
• 依托单位: Université du Québec à Rimouski
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718323
• 关键词: Integrated; platform; characterisation; seawater; carbonate

The accurate determination of seawater carbonate chemistry parameters is a critical component of chemical oceanography and global change biology. The investigation of ocean and coastal acidification, deoxygenation, and warming require a full breakdown of the estuarine and marine waters carbonate system for the correct interpretation of chemical, geological and biological results. To provide IPCC and local management reliable seawater carbonate chemistry information on which to base their decision-making processes, as well as meet the standards of high impact journals, it is required that three seawater carbonate chemistry parameters (on four) be measured (pH, dissolved organic carbon (DIC), total alkalinity (AT), or CO2 partial pressure (pCO2)) together with temperature and salinity. From these the full carbonate chemistry system can be calculated and counter validated. Currently, the measurements of AT and DIC at UQAR, and more broadly in Eastern Canada, are generally carried out with equipment that does possess the required precision or/and sufficient throughput. This has created an extremely large institutional, and regional, backlog of samples; which cannot rely on paying services, as this would mean to incur in prohibitive extra research costs and delays: again, as even these rare facilities either do not have high throughput or/and have backlogs of their own. This reduce enormously the occurrence and impact of our discoveries; and do not enable us to provide appropriate training to our and collaborators HQP. We are unable to meet our own research needs and we are entering a negative trend in our ability to deliver on and attract research grant in fast-evolving key research areas. The present proposal aims to rectify this situation by purchasing equipment to create an integrated AT, DIC, and pH measurement platform with the high throughput we require, and the high precision demanded by our fields of research. The first requested piece of equipment is a multi-chambers high precision AT titrator. The second is a multi-chambers high precision DIC infrared light analyser. The third is a visible and UV-visible spectrophotometer, which will be used primarily for the accurate and precise measurement of the pH of waters characterised by different salinities. This equipment has the ability to be used in the laboratory or aboard a ship, to characterise the carbonate system of remote areas. This system will support a number of currently funded NSERC Grants of the PIs, as well as other grants: incl. from colleagues in the broader region. The measurement of AT, DIC, and pH are critical to the applicant research, the training of HQP and the cutting-edge research they conduct in chemical oceanography and global change biology. Supporting this application will enable us to rectify an extremely difficult situation, allowing our team and our institution at the forefront of the research fields, thus helping Canada research excellence.

海水碳酸盐化学参数的准确测定是化学海洋学和全球变化生物学的重要组成部分。对海洋和沿海酸化、脱氧和变暖的研究需要对河口和海水碳酸盐系统进行全面分解，以便正确解释化学、地质和生物学结果。为了向 IPCC 和当地管理层提供可靠的海水碳酸盐化学信息作为决策过程的基础，并满足高影响力期刊的标准，需要测量三个海水碳酸盐化学参数（共四个）（pH、溶解有机碳 (DIC)、总碱度 (AT) 或二氧化碳分压 (pCO2)）以及温度和盐度。由此可以计算出完整的碳酸盐化学系统并进行反验证。目前，UQAR 以及更广泛的加拿大东部地区的 AT 和 DIC 测量通常是使用具有所需精度或/和足够吞吐量的设备进行的。这造成了机构和区域样本的大量积压；不能依赖付费服务，因为这将意味着产生令人望而却步的额外研究成本和延误：同样，即使这些罕见的设施也没有高吞吐量或/和自己的积压。这极大地减少了我们发现的发生率和影响；并且不允许我们向我们和合作者的总部提供适当的培训。我们无法满足自己的研究需求，并且在快速发展的关键研究领域提供和吸引研究资助的能力正在进入负面趋势。目前的提案旨在通过购买设备来创建一个集成的 AT、DIC 和 pH 测量平台来纠正这种情况，该平台具有我们所需的高通量和我们研究领域所需的高精度。第一个要求的设备是多室高精度 AT 滴定仪。二是多室高精度DIC红外光分析仪。第三种是可见光和紫外可见分光光度计，主要用于准确测量不同盐度水体的pH值。该设备能够在实验室或船上使用，以表征偏远地区的碳酸盐系统。该系统将支持当前资助的 PI 的 NSERC 赠款以及其他赠款：包括。来自更广泛地区的同事。 AT、DIC 和 pH 的测量对于申请人的研究、HQP 的培训以及他们在化学海洋学和全球变化生物学方面进行的前沿研究至关重要。支持这一申请将使我们能够扭转极其困难的局面，使我们的团队和我们的机构走在研究领域的最前沿，从而帮助加拿大取得卓越的研究成果。