Relationship between enrichment, toxicity, and chemical bioavailability of heavy metals in sediments of the Cai River estuary

Koukina, Sofia; Лобус, Н. В.

doi:10.1007/s10661-020-08282-6

Cited by 13 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The literature shows that the contents of Fe, Mn, and Al in Cr-contaminated soil are significantly enriched with increasing monsoon precipitation. The accumulation of different fractions of Cr was mainly due to the flocculation and coagulation of Fe/Mn oxyhydroxides ( Papassiopi et al, 2009 ; Koukina and Lobus, 2020 ). However, some studies found no significant correlations between the total concentrations of Cr and As in soil ( Huang et al, 2010 ; Tu et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

Insight into functional microorganisms in wet–dry conversion to alleviate the toxicity of chromium fractions in red soil

et al. 2022

View full text Add to dashboard Cite

Soil contamination with potentially toxic element such as chromium (Cr) poses a threat to the environment and human health. The environmental toxicity of Cr is related not only to the total Cr content but also to the distribution of Cr fractions. In this study, laboratory simulation experiments were conducted to explore the characteristics of Cr fractions and responses of the functional microbial community during dynamic leaching and static drying processes. The results showed that acid-soluble Cr and reducible Cr transformed into other relatively stable fractions under dry conditions, and ammonium nitrogen promoted the transformation. Nitrate-nitrogen was significantly positively correlated with Cr fractions in the wet stage (p < 0.05), while ammonium nitrogen showed the same relation in the dry process. Analysis of the microbial community showed that the bacterial and fungal genera Flavihumibacter, Altererythrobacter, Methylobacillus, Flavisolibacter, Lysobacter, and Cladosporium were related to the Cr fractions (acid-soluble Cr, reducible Cr, and oxidizable Cr) under wet conditions, while the microbial genera Ellin6067, MND1, and Ramlibacter were related to Cr fractions under dry conditions. Moreover, the proliferation of the functional microbial genera Methylobacillus, Ellin6067, and MND1 related to Cr fractions in the wet–dry conversion process alleviated the environmental toxicity of Cr. These findings provide useful information for the remediation of Cr-contaminated soils by monitoring the distribution fractions of Cr and the functional microbial community under wet–dry conditions.

show abstract

Section: Discussionmentioning

confidence: 99%

Insight into functional microorganisms in wet–dry conversion to alleviate the toxicity of chromium fractions in red soil

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The Enrichment Factor (EF) normalizes metal contents according to sediment texture properties [ 1 , 8 ]. In the present article, we used both Al and Fe as M REF for the calculation of EF Al and EF Fe , respectively.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The Geoaccumulation Index (I geo ) was used to measure metal pollution in sediments and was calculated using the following equation [ 3 , 8 ]:

where average WRSPM and shale values were used as a background for SPM and sediments, respectively [ 9 , 10 ]. I geo <0: uncontaminated; I geo <1: uncontaminated to moderately contaminated; I geo <2: moderately contaminated; I geo <3: moderately to highly contaminated, etc.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Dataset on the abundance, enrichment and partitioning of chemical elements between the filtered, particulate and sedimentary phases in the Cai River estuary (South China Sea)

2021

Self Cite

View full text Add to dashboard Cite

This data article refers to the paper entitled “Multi-element signatures in solid and solution phases in a tropical mixing zone: A case study in the Cai River estuary, Vietnam” (Koukina et al., 2021), which considers the fate of major, trace, and rare-earth elements transported through the estuarine geochemical filter of the typical tropical estuary. The present work contributes to the local geochemical baselines as a background for long-term monitoring of potential hazardous elements. Therefore, the dataset covers the abundance, enrichment, and partitioning parameters of 53 chemical elements in the water, suspended particulate matter, and bottom sediment samples collected in the Cai River estuary and the adjacent part of the Nha Trang Bay (South China Sea) between July and August 2013. The total filtered, particulate, and sedimentary elements were determined by atomic emission and inductively coupled plasma mass spectrometry (ICP-AES; ICP-MS). The environmental indices (the enrichment factor and geoaccumulation index) and partition coefficients were calculated from the total element contents. The data provided is essential for the comprehensive environmental assessment of the anthropogenic impact on the coastal ecosystem as well as for the evaluation and modelling of element fractionation and mobility at the estuarine gradients.

show abstract

“…PTEs pose a great threat to the aquatic environment due to their toxic effects and long-term accumulation potential in sediments and organisms [ 3 , 4 , 5 ]. In recent years, PTEs produced by human activities have been discharged into aquatic ecosystems by various paths including surface runoff and atmospheric dustfall, and more than 90% of the PTEs are ultimately immobilized in the sediments [ 6 , 7 , 8 ]. However, when the capacity of sediments to absorb PTEs exceeds its maximum load under certain environmental conditions, the sediments will desorb them into the overlying waters, resulting in serious hazard to health of aquatic ecosystems and humans [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China

Zhang

Liang

Liu

et al. 2022

IJERPH

View full text Add to dashboard Cite

The spatial distributions of Cr, Ni, Cu, Zn, As, Cd and Pb (potentially toxic elements, PTEs) in sediments and intrinsic influence factors from the Wuliangsuhai wetland of the Hetao Irrigation District, China were studied in this work. The results showed that excluding Zn, the total contents of other PTEs were higher than the background values, of which As (39.26 mg·kg−1) and Cd (0.44 mg·kg−1) were six-fold and seven-fold higher, respectively. Especially, the high levels of Cd (70.17%), Pb (66.53%), and Zn (57.20%) in the non-residual fraction showed high bioavailability and mobility. It indicated that PTEs can enter the food chain more easily and produce much toxicity. Based on Igeo, ICF, and MRI, the contamination of As was the most serious in the middle areas (MDP) of the wetland, and its risk was up to moderately strong. Cd and Pb posed moderate and considerate risk, respectively. Furthermore, 29.50% and 55.54% risk contribution ratio of As and Cd, respectively, showed that they were the dominant contaminants. In addition, the positive correlation between sand, OM, and total contents and chemical fractions of PTEs by using PCM, RDA, and DHCA indicated that physicochemical properties could significantly influence the spatial distributions of PTEs. The work was useful for assessing the level of pollution in the study area and acquiring information for future and possible monitoring and remediation activities.

show abstract

Relationship between enrichment, toxicity, and chemical bioavailability of heavy metals in sediments of the Cai River estuary

Cited by 13 publications

References 49 publications

Insight into functional microorganisms in wet–dry conversion to alleviate the toxicity of chromium fractions in red soil

Insight into functional microorganisms in wet–dry conversion to alleviate the toxicity of chromium fractions in red soil

Dataset on the abundance, enrichment and partitioning of chemical elements between the filtered, particulate and sedimentary phases in the Cai River estuary (South China Sea)

Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China

Contact Info

Product

Resources

About