ArticleEnvironmental monitoring and assessment2026
Comprehensive evaluation of surface water quality: heavy metals, speciation, and human health risks in an industrial region of West Bengal, India.
Article in Environmental monitoring and assessment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study evaluates the hydrogeochemical characteristics, heavy metal (HM) contamination, irrigation suitability, and associated human health risks of surface water in an industrial area affected by dye-manufacturing activities in West Bengal, India. A total of 30 surface water collected in triplicate were analysed. Major ions were determined using standard American Public Health Association (APHA) methods, HMs were quantified using atomic absorption spectrometry (AAS), and aqueous speciation was modelled using Visual MINTEQ. The water was slightly alkaline, with pH values ranging from 7.18 to 8.92 (mean 7.79±0.41). Extremely high salinity was observed, as electrical conductivity ranged from 2500 to 21,000 μS cm⁻¹ (mean 11,300±4272 μS/cm), while total dissolved solids varied between 1500 and 12,600 mg/L (mean 6780 ± 2563 mg/L), exceeding World Health Organization (WHO) guideline values. Major cations followed the order Ca²⁺ > Mg²⁺ > Na⁺ > K⁺, whereas dominant anions were HCO
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