Serdar Çetinkaya, Hacer Aydin, Mehmet Çetin, Enis Macit, Onur Erdem
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引用次数: 0
Abstract
The February 2023 Kahramanmaraş earthquakes damaged water-supply infrastructure, but post-earthquake drinking-water quality and health risk in the epicentral region remain poorly characterized. This study assessed trace element contamination and cumulative human health risk in municipal drinking water from all 11 districts of Kahramanmaraş Province at ~ 18 (August 2024) and ~ 24 months (February 2025) post-earthquake, using ICP-MS, the Water Quality Index, deterministic/probabilistic (Monte Carlo) health risk assessment, and multivariate statistics. All concentrations remained below drinking-water guideline values (WQI = 3.1-13.4), yet substantial spatial heterogeneity was observed. Children were most vulnerable, with hazard index > 1 in up to four districts per campaign; arsenic contributed ~ 76% of cumulative non-carcinogenic risk. Deterministic carcinogenic risk exceeded the 1 × 10-4 benchmark in 21 of 44 district-period-population combinations, consistently in Afşin, Türkoğlu, and Elbistan; these exceedances reflect the substantially higher arsenic cancer slope factor adopted in the January 2025 US EPA IRIS update (32 (mg/kg/day)-1, versus 1.5 previously) rather than a deterioration in measured arsenic concentrations, all of which remained below the WHO/TS266 guideline value. Monte Carlo simulations identified the same districts as recurring, screening-level exceedance hotspots. These findings are consistent with the hypothesis that major earthquakes can shape drinking-water exposure patterns long after the immediate disaster period, although the absence of a pre-earthquake baseline or control area precludes direct causal attribution. This study provides the first province-wide assessment of post-earthquake drinking-water quality and health risk following the 2023 Türkiye earthquakes, underscoring the need for cumulative, probabilistic, and long-term monitoring in post-disaster water management.
期刊介绍:
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.