在河流中有效注入气体跟踪剂:研究地表水和地下水相互作用的工具
Théo Blanc1, Morgan Peel2, Matthias S Brennwald3
1Centre for Hydrogeology and Geothermics of University of Neuchâtel (CHYN), Hydrochemistry and Contaminants and Hydrogeological processes, Rue Emile-Argand 11, Neuchâtel, 2000, Neuchâtel, Switzerland; Eawag, Swiss Federal Institute of Aquatic Science and Technology, Water Resources and Drinking Water, Ueberlandstrasse 133, Dübendorf, 8600, Zürich, Switzerland.
Water research
|March 5, 2024
概括
研究人员开发了一种新的扩散注射装置,用于用 (He) 等标记物标记河水. 这种方法有效地研究了长时间的地表水和地下水相互作用以及透到含水层中的情况.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 地质化学 地质化学
背景情况:
- 表面水与地下水的相互作用是复杂的,对水资源管理至关重要.
- 研究这些相互作用的传统标记器存在局限性,特别是当度对比度最小或短暂时.
- 高贵气体提供了一个有前途的替代追踪方法,可通过便携式质谱仪进行现场监测来增强.
研究的目的:
- 开发一种高效,强大的扩散注射装置,用于长时间地表水的气体标签.
- 在实地研究中克服与连续气体注入相关的后勤挑战.
- 为了证明装置的有效性,使用作为地表水和地下水相互作用的追踪器.
主要方法:
- 扩散注射装置的设计和实施,用于可控的实时气体注射.
- 在河水标记实验中,利用 (He) 作为人工标记物.
- 在现场使用便携式质谱仪持续监测溶解气体度.
主要成果:
- 扩散注射装置使得河水持续标记35天,从而使溶解He度增加了数量级.
- 该实验成功地追踪了河水透到流水层的情况.
- 有关到抽水井的行程时间和透河水与区域地下水的混合比率获得了宝贵的数据.
结论:
- 开发的扩散注射装置是长期在地表水中进行气体追踪研究的高效和稳健的解决方案.
- 由新装置促进的追踪,为诸如河水透和混合等水文过程提供了关键的见解.
- 这种方法增强了对地表水-地下水连接和动态的研究.
相关概念视频
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In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
Two primary injection methods are used...
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01:18Sampling Methods: Sample Types
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Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
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