Assessment of the concentration and environmental impacts of potential hazardous elements in coalfields in Northeastern Turkey

Eker, Çiğdem Saydam; Sipahi, Ferkan; Akpınar, İbrahim

doi:10.1007/s12665-021-09404-0

Cited by 4 publications

(1 citation statement)

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“…Cd poses a high potential environmental risk owing to its toxicity and chemical fractions. This element is potentially hazardous, and related to 80% monosulfides (sphalerite), 10% pyrite, and 10% silicate in low-rank coals [42,43]. The high geochemical background caused by the weathering of black shale in the study area has led to a high ecological risk from soil Cd in the region.…”

Section: Ecological Risk Assessmentmentioning

confidence: 99%

Enrichment Characteristics and Ecological Risk Assessment of Heavy Metals in a Farmland System with High Geochemical Background in the Black Shale Region of Zhejiang, China

Wu,

Sun,

Tian

et al. 2024

Minerals

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Soils derived from black shale enriched in heavy metals pose risks to the environment and human health. Eighty sets of soil–rice samples were collected in northwest Zhejiang, China. The results showed significant enrichment of As, Cd, Pb, and Zn in the studied soil. Sequential extraction data indicated that Cd had relatively high bioavailability. Thirty-four percent of the rice samples exceeded the heavy metal pollution thresholds of national food safety standards. A comprehensive evaluation of soil heavy metals using the potential ecological risk index (RI) revealed low-to-moderate-grade risk. Risk assessment code (RAC) levels decreased as follows: Cd > Ni > Zn > Cr > Cu > Pb > As > Hg. The RAC of Cd was high and very high risk, whereas those of others were no or low risk. Cd was the major contributor to the environmental risk based on the total heavy metal concentration, toxicity, and chemical fractions. The health risk to the local populace was assessed using the method recommended by the USEPA. Local people may experience both non-carcinogenic and carcinogenic health risks, and children face greater health risks than adults. As, Cd, and Pb are the most significant contributors to non-carcinogenic health risks, and Cd is the main carcinogenic risk. In conclusion, special attention should be given to heavy metal pollution in black shale-derived soils.

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Section: Ecological Risk Assessmentmentioning

confidence: 99%