Groundwater in Southern Vietnam: Understanding geochemical processes to better preserve the critical water resource
| Autor: | Hong Quan Nguyen, Quang Khai Ha, Duc Huy Dang, Tien Dung Tran Ngoc, Phu Le Vo |
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| Rok vydání: | 2022 |
| Předmět: |
Hydrology
geography Environmental Engineering geography.geographical_feature_category Resource (biology) Rain Water Wells Aquifer Total dissolved solids Pollution Vietnam Water Resources Environmental Chemistry Environmental science Sedimentary rock Saltwater intrusion Groundwater quality Multivariate statistical Groundwater Waste Management and Disposal |
| Zdroj: | Science of The Total Environment. 807:151345 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2021.151345 |
| Popis: | A thorough understanding of groundwater geochemical characteristics and dominant hydro(bio)geochemical processes in the aquifers is valuable for sustainable groundwater protection. With this respect, this study provides a comprehensive assessment of hydrogeochemical characteristics of groundwater in sedimentary aquifers of the Southern region of Vietnam. The dataset comprised 291 water samples collected in rainy and dry seasons from 155 wells, and their chemical compositions of dissolved ions (Ca2+, Mg2+, Na+, K+, HCO3−, Cl−, SO42−, NO3−, NH4+, Fe, total dissolved solids) and pH. We calculated the groundwater quality index to determine the suitability of groundwater for drinking purposes. Accordingly, about 47% of groundwater samples range from poor to unsuitable quality for drinking purposes, in which total dissolved solid (TDS) and high iron concentrations are primary factors. We also examined hydrogeochemical characteristics by multivariate statistical analyses (Hierarchical Cluster Analysis and Principal Component Analysis). The results demonstrated four groups of water: fresh groundwater (TDS |
| Databáze: | OpenAIRE |
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