Table · dataset · 2026
Hydrochemical Dynamics and Saline-to-Soda-Saline Transition in Selected Iraqi Inland Waters: Seasonal and Spatial Patterns
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<p dir="ltr">Inland saline waters are sensitive to seasonal hydrological forcing, evaporation, and carbonate-system variability, yet hydrochemical transitions in Iraqi inland waters remain insufficiently characterized.
Description
This study investigated the chemical composition and hydrochemical classification of selected semi-static and astatic inland saline waters in Iraq, focusing on seasonal and spatial variability and carbonate-system changes.
Water samples were collected from six stations in Al-Dalmaj Marsh (ADM) and from three temporary ponds in Babylon Province. pH ranged from 7.0 to 9.7, electrical conductivity (EC) from 5.7 to 471 mS cm⁻¹, salinity from 4 to 328,100 mg L⁻¹, and total dissolved solids (TDS) reached 315,100 mg L⁻¹ in the ponds. Sodium (Na⁺) dominated the pond cation composition, whereas magnesium (Mg²⁺) was relatively more important in ADM.
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The dominant anion sequence was Cl⁻ > HCO₃⁻ + CO₃²⁻ > SO₄²⁻ in the ponds and Cl⁻ > SO₄²⁻ > HCO₃⁻ + CO₃²⁻ in ADM. Equivalent-percentage classification identified ADM and Pond 3 as saline waters, while Ponds 1 and 2 showed soda-saline characteristics. Durov diagrams, Gibbs plots, and Pearson correlation analysis indicated that evaporative concentration, Na–Cl enrichment, and carbonate-related biogeochemical processes contributed to hydrochemical differentiation and soda-saline tendencies in these inland saline waters.</p>
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- DOI doi.org/10.6084/m9.figshare.33798832.v1 ↗
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Provenance · 1 source records, 17 field assertions
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|---|---|---|---|
| figshare | oai:figshare.com:article/33798832 | 11 d ago | JSON v1 |
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