Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.0
Journals
Water
Special Issues
Isotope Geochemistry of Groundwater: Latest Advances and Prospects
water-logo
Submit to Water Review for Water Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Isotope Geochemistry of Groundwater: Latest Advances and Prospects

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrogeology".

Deadline for manuscript submissions: closed (20 May 2024) | Viewed by 3514

Special Issue Editors

Dr. Qiufang He

E-Mail Website
Guest Editor
Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400700, China
Interests: groundwater; geochemical circulation; hydrological circulation; carbon sink; organic matter
Dr. Qiong Xiao

E-Mail Website
Guest Editor
Key Laboratory of Karst Dynamics, Ministry of Natural Resources & Guangxi, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China
Interests: karst hydrogeology; stable isotopes; karst carbon sink; carbon cycle; ground water
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jiacheng Lan

E-Mail Website
Guest Editor
School of Karst Science/State Engineering Technology Institute for Karst Desertification Control, Guizhou Normal University, Guiyang 550001, China
Interests: karst carbon sink; groundwater nitrogen pollution; groundwater organic pollutants; karst hydrogeology

Special Issue Information

Dear Colleagues,

Groundwater plays an important role in global water supply and is the critical element supporting the Earth's ecosystem cycle. Anthropogenies and natural factors such as climate change, human pollution, and natural geochemical pollution have greatly impacted groundwater quality and its ecological value. Environmental isotopes, such as H, C, N, O, S, etc., are often used to research the mechanism of groundwater recharge and water–rock interactions, control groundwater pollution, and estimate groundwater age and renewal capacity. Hydrogen and oxygen stable isotopes are commonly used to understand water vapor sources of atmospheric precipitation, runoff segmentation, river basin runoff generation mode division, soil water transport in unsaturated zones, mutual transformation of different water bodies, and isotope hydrological models. 87Sr/86Sr and 26Mg isotopes are often used to find out the water quality genesis and hydrogeochemical processes of groundwater. δ15N, δ34S, δ18O, δ37Cl, 208Pb/206Pb, 206Pb/207Pb, 208Pb/204Pb, δ13C, δ2H, and δ81Br are also used to analyze groundwater pollution characteristics, identify groundwater pollution sources, and calculate the pollution source contribution rate. Radioactive isotopes such as 3H and 14C can not only obtain the age of groundwater but also understand the groundwater circulation.

The theme of this Special Issue is “Isotope Geochemistry of Groundwater: Latest Advances and Prospects”, focusing on new techniques and applications concerned with isotopes and geochemical variations in groundwater circulation. High-quality research papers using stable or radioactive isotopes to investigate groundwater geochemistry, hydrology, geohydrology, resource, and pollution conditions are welcome. Papers that focus on new applications of groundwater isotopes in different ecosystems and geological backgrounds are also of interest.

Dr. Qiufang He
Dr. Qiong Xiao
Prof. Dr. Jiacheng Lan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • geochemical
  • stable isotope
  • radioactive isotope
  • groundwater
  • hydrology
  • quality
  • pollution tracking
  • geohydrology

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

11 pages, 5748 KiB  
Article
The Influence of Groundwater Migration on Organic Matter Degradation and Biological Gas Production in the Central Depression of Qaidam Basin, China
by Jixian Tian, Qiufang He, Zeyu Shao and Fei Zhou
Water 2024, 16(15), 2163; https://doi.org/10.3390/w16152163 - 31 Jul 2024
Viewed by 856
Abstract
For insight into the productive and storage mechanisms of biogas in the Qaidam Basin, efforts were made to investigate the groundwater recharge and the processes of hydrocarbon generation by CDOM-EEM (fluorescence excitation-emission matrix of Chromophoric dissolved organic matter) spectrum, hydrogen and oxygen isotopes, [...] Read more.
For insight into the productive and storage mechanisms of biogas in the Qaidam Basin, efforts were made to investigate the groundwater recharge and the processes of hydrocarbon generation by CDOM-EEM (fluorescence excitation-emission matrix of Chromophoric dissolved organic matter) spectrum, hydrogen and oxygen isotopes, and geochemical characters in the central depression of the Qaidam Basin, China. The samples contain formation water from three gas fields (TN, SB, and YH) and surrounding surface water (fresh river and brine lake). The results indicate that modern precipitation significantly controls the salinity distribution and organic matter leaching in the groundwater system of the central depression of the Qaidam Basin. Higher salinity levels inhibit microbial activity, which leads to organic matter degradation and to gas generation efficiency being limited in the groundwater. The inhabitation effect is demonstrated by the notable negative correlation between the extent of organic matter degradation and its concentration with hydrogen and oxygen isotopes. The conclusion of this study indicated that modern precipitation emerges as a crucial factor affecting the biogas production and storage in the Qaidam Basin by influencing the ultimate salinity and organic matter concentration in the formation, which provides theoretical insight for the maintenance of modern gas production wells and the assessment of gas production potential. Full article
(This article belongs to the Special Issue Isotope Geochemistry of Groundwater: Latest Advances and Prospects)
►▼ Show Figures

Figure 1

16 pages, 3947 KiB  
Article
Gallium Isotope Effect of Ga-Si Complex Solutions in Water: Theoretical Study Based on Density Functional Theory
by Jixi Zhang
Water 2024, 16(12), 1680; https://doi.org/10.3390/w16121680 - 12 Jun 2024
Viewed by 1089
Abstract
A Ga isotope is a new proxy for different geochemical processes such as a weathering process, solution process, etc. Si (Si(OH)4) is ubiquitous in natural water bodies. However, studies on the Ga isotope effect about a Ga3+ aqueous solution reacting [...] Read more.
A Ga isotope is a new proxy for different geochemical processes such as a weathering process, solution process, etc. Si (Si(OH)4) is ubiquitous in natural water bodies. However, studies on the Ga isotope effect about a Ga3+ aqueous solution reacting with Si (Si(OH)4) are lacking. In this study, the Ga isotope effect of this process will be studied using a theoretical calculation method based on first principles. The results show that the heavy Ga (71Ga) isotope enrichment ability of different Ga-Si complex solutions is different. The 1000lnβ (‰) sequence of different Ga-Si complex solutions is (OH)3GaOSi(OH)3.(H2O)30 ≈ (OH)3(H2O)2GaOSi(OH)3.(H2O)30 > (OH)2(H2O)3GaOSi(OH)3.(H2O)30 > (H2O)5GaOSi(OH)3.(H2O)30 > (OH)(H2O)4GaOSi(OH)3.(H2O)30. The results show that there are two different reaction mechanisms when a Ga3+ aqueous solution reacts with Si-bearing (Si(OH)4) water; that is, six-coordination Ga-Si complexes and four-coordination Ga-Si complexes are formed at low pH (acidic) and high pH (alkaline), respectively. Compared with a Ga-Si complex aqueous solution under acidic conditions, Ga-Si aqueous solutions under alkaline conditions preferentially enriched the heavy Ga isotope (71Ga). The Ga isotope fractionation factors (α) between Ga-Si complex solutions and Ga3+-bearing aqueous solutions are all negative, which indicates that light Ga (69Ga) isotopes preferentially enter the structure of Ga-Si complexes during the formation of Ga-Si complex solutions. At 50 °C, the Ga isotope fractionation factors (1000lnα) of five systems ((H2O)5GaOSi(OH)3.(H2O)30 vs. [Ga(H2O)6]3+(aq), (OH)(H2O)4GaOSi(OH)3.(H2O)30 vs. [Ga(H2O)6]3+(aq), (OH)3GaOSi(OH)3.(H2O)30 vs. [Ga(OH)3](aq), (OH)3(H2O)2GaOSi(OH)3.(H2O)30 vs. [Ga(OH)3](aq), and (OH)2(H2O)3GaOSi(OH)3.(H2O)30 vs. [Ga(OH)3](aq)) involved in this study are −0.12, −0.22, −0.07, −0.09, and −0.16 (‰), respectively. Excitedly, Si can affect the enrichment ability of the heavy Ga isotope (71Ga) in Ga-bearing complex aqueous solutions. This means that when Si is present in aqueous solutions, the enrichment capacity of the heavy Ga isotope (71Ga) of aqueous solutions will be effectively reduced. Ga in sediments is mainly derived from soluble Ga in the form of adsorbed (Fe, Mn) oxides/hydroxides, and the Ga isotope composition in sediments is heavier than that in basalt. The formation process of Ga-Si complex aqueous solutions influences the Ga isotope fractionation effect and also contributes to the composition of Ga isotopes in sediments. These key Ga isotope fractionation parameters obtained in this study will provide theoretical support for better explaining the reaction mechanism of Ga3+ complexes and Si-bearing (Si(OH)4) water bodies in solution processes and Ga isotope geochemical cycles. Full article
(This article belongs to the Special Issue Isotope Geochemistry of Groundwater: Latest Advances and Prospects)
►▼ Show Figures

Figure 1

17 pages, 9625 KiB  
Article
Hydrogeochemical Characteristics of the Geothermal System in the Woka-Cuona Rift Zone, Tibet
by Wen Zhang, Jiansong Peng and Yong Liu
Water 2024, 16(10), 1395; https://doi.org/10.3390/w16101395 - 14 May 2024
Viewed by 970
Abstract
The Woka-Cuona rift zone on the southeastern side of the Qinghai-Tibet Plateau is characterized by complex geological background conditions, comprising three independent or semi-grabens that traverse from south to north across the Himalayan and Gangdise terranes. Conducting research on the distribution patterns and [...] Read more.
The Woka-Cuona rift zone on the southeastern side of the Qinghai-Tibet Plateau is characterized by complex geological background conditions, comprising three independent or semi-grabens that traverse from south to north across the Himalayan and Gangdise terranes. Conducting research on the distribution patterns and genesis mechanisms of geothermal resources within the Woka-Cuona rift zone has certain guiding significance for understanding the genesis mechanisms of the geothermal system in the southern Tibetan rift and its exploitation. This paper utilized methods such as data collection, ground investigations, and geochemical analyses to analyze the distribution characteristics and evolutionary processes of geothermal waters in the Cuona rift area based on the geological background conditions of the study area. The research findings demonstrate a significant correlation between the occurrence of geothermal waters in the Cuona rift zone and geological structures, with most geothermal waters primarily distributed near intersections of graben boundary faults and east–west-trending faults. Different regions exhibit variations in the intensity of geothermal activity and geochemical characteristics, with the genesis of geothermal waters associated with deep magmatic activity, characterized by Na+ and K+ as the primary cations and Cl− as the primary anions. Geothermal waters mainly originate from atmospheric precipitation and snowmelt water from surrounding mountainous areas, with recharge elevations ranging from 4500 to 6200 m and an average elevation of 5400 m. Full article
(This article belongs to the Special Issue Isotope Geochemistry of Groundwater: Latest Advances and Prospects)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop