Hydrochemistry and isotopic characterization of water resources in Santa Rosa mining area, Ecuador

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00389155" target="_blank" >RIV/68407700:21110/25:00389155 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.gsd.2025.101556" target="_blank" >https://doi.org/10.1016/j.gsd.2025.101556</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.gsd.2025.101556" target="_blank" >10.1016/j.gsd.2025.101556</a>

Result language

angličtina

Original language name

Hydrochemistry and isotopic characterization of water resources in Santa Rosa mining area, Ecuador

Original language description

This study analyzed the hydrochemical and isotopic characteristics of water resources in the Santa Rosa mining region, southern Ecuador, with the aim of understanding the processes that influence the chemical composition of water, its origin, and sources of contamination. The research focused on assessing the impact of anthropogenic activities on water quality, providing an integrated perspective of the region. Between 2022 and 2024, water samples were collected during both dry and rainy seasons. Surface water samples were taken from the Santa Rosa River and its tributaries, while groundwater samples were obtained from commercial wells within the watershed. Major ions (Ca2+, Mg2+, K+, Na+, HCO3-, SO42-,Cl-,NO3-) and isotopic content (S18O, S2H, S3H, S34S-SO42-, and S18O-SO42-) were analyzed. The data were analyzed using hydrochemical diagrams, multivariate statistical analysis, and geospatial analysis. The findings revealed that surface waters are characterized by Ca2+- SO42-- and Ca2+- HCO3- compositions, while groundwater was identified as Na+- Cl type. The chemistry of surface water is mainly regulated by rock-water interactions, while marine evaporites dominate groundwater chemistry. Isotopes 18O and 2H suggest that the water primarily originates from meteoric sources. The source of SO42-in surface water is attributed to atmospheric deposition and the oxidation of sulfur compounds, whereas the dissolution of evaporites is the key factor driving groundwater SO42-concentrations. This study represents the first comprehensive hydrochemical and isotopic analysis of water resources in a mining region in Ecuador, providing crucial data for the sustainable management of water resources in areas affected by mining. The results offer a scientific basis for developing water protection and conservation strategies essential for mitigating the impacts of mining on local water quality.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10503 - Water resources

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Groundwater for Sustainable Development

ISSN

2352-801X

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

November

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

17

Pages from-to

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UT code for WoS article

001634695500001

EID of the result in the Scopus database

2-s2.0-105023827495