Sequential Fractionation Assessment of Mobility and Heavy Metal Risk in Contaminated Soils

Q: What does this research mean for the field?

Industrial soils in Coimbatore, India, pose a moderate to high ecological risk driven primarily by highly mobile cadmium and lead from mixed anthropogenic inputs. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Sengottiyan Priyatharshini; P C Prabu; A Bharani; S Pazhanivelan; Balaji Kannan; D Muthumanickam

doi:10.1134/s1064229326600363

August 31, 2026Eurasian Soil Science

Sequential Fractionation Assessment of Mobility and Heavy Metal Risk in Contaminated Soils

View at Publisher

Ask AI

Bookmark

Share

Key Points

Evaluate the chemical fractionation, environmental mobility, and ecological risk of heavy metals in surface soils collected from major industrial zones.
Analyzed 20 surface soil samples (Technosols, Anthrosols, Luvisols, and Acrisols) collected from industrial areas in Coimbatore, Tamil Nadu, India.
Partitioned heavy metals (Ni, Cr, Cd, Pb, Zn, Cu, Fe, and Mn) using a modified Community Bureau of Reference (BCR) four-step sequential extraction procedure into exchangeable (F1), reducible (F2), oxidizable (F3), and residual (F4) fractions.
Quantified environmental mobility and ecological risk using contamination factor, geoaccumulation index, pollution load index, ecological risk index, and principal component analysis.
Total metal concentrations ranged from 0.25–1.53 mg kg⁻¹ for Ni, 34.61–85.79 mg kg⁻¹ for Pb, 8.40–92.35 mg kg⁻¹ for Cr, and 0.15–1.31 mg kg⁻¹ for Cd, with mean abundance following the order Cr > Pb > Ni > Cd.
Cadmium was primarily bound to the exchangeable fraction (F1), indicating high environmental mobility, whereas Pb was predominantly reducible/oxide-bound (F2) and Cr was mainly sequestered in the residual fraction (F4).
Ecological risk indices (ERI 63–432) and pollution load indices (PLI > 1) revealed moderate to high ecological risk at industrial and cement sites, driven predominantly by mobile Cd and Pb inputs (PCA explaining 68.27% variance).

No abstract yet

We only have this paper's title and publication details.

Read it at the source

Ask about this paper

Answers are grounded in this paper and cite their sources.

Implication

Sequential fractionation analysis reveals elevated cadmium mobility and ecological risk in industrial soils, highlighting the necessity of ongoing contamination monitoring.

Discussion

No takes yet. Share an insight, caveat, or question.

Cite This Study

Priyatharshini et al. (2026) studied this question.

synapsesocial.com/papers/6a97e25ec562ede874ec67b9 https://doi.org/10.1134/s1064229326600363

View at Publisher

Ask AI

Bookmark

Share

Sequential Fractionation Assessment of Mobility and Heavy Metal Risk in Contaminated Soils

Key Points

No abstract yet

Ask about this paper

Implication

Discussion

Cite This Study

Sequential Fractionation Assessment of Mobility and Heavy Metal Risk in Contaminated Soils

Key Points

No abstract yet

Ask about this paper

Implication

Discussion

Cite This Study

Keep reading

Keep reading