Chemical speciation and bioavailability concentration of arsenic and heavy metals in sediment and soil cores in estuarine ecosystem, Vietnam

Van, Thinh Nguyen; Osanai, Yasuhito; Adachi, Tatsuro; Thai, Phong K.; Nakano, Nobuhiko; Ozaki, Akinori; Kuwahara, Yoshihiro; Kato, Ryosuke; Makio, Masato; Kurosawa, Kiyoshi

doi:10.1016/j.microc.2018.03.005

Cited by 32 publications

(10 citation statements)

References 30 publications

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“…The procedure proposed by Tessier et al was applied in this study to analyzed different copper species that was usually used to determine the fractionation of heavy metals in soil and sediment samples [20]. The Cu(II) of the five fractions were analyzed, including the exchangeable fraction, carbonates fraction, Fe-Mn oxides fraction (the fraction associated with Fe and Mn oxides), organic matter fraction (the fraction bound to organic matter) and a residual fraction.…”

Section: Analytical Methods Of Cu(ii) and Its Sequential Extractionmentioning

confidence: 99%

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

et al. 2019

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Heavy metals such as Cu(II), if ubiquitous in the runoff, can have adverse effects on the environment and human health. Lime sand bricks, as low-cost adsorbents to be potentially applied in stormwater infiltration facilities, were systematically investigated for Cu(II) removal from water using batch and column experiments. In the batch experiment, the adsorption of Cu(II) to bricks reach an equilibrium within 7 h and the kinetic data fits well with the pseudo-second-order model. The sorption isotherm can be described by both the Freundlich and Langmuir model and the maximum adsorption capacity of the bricks is 7 ± 1 mg/g. In the column experiment, the best removal efficiency for Cu(II) was observed at a filler thickness of 20 cm, service time of 12 min with a Cu(II) concentration of 0.5 mg/L. The Cu(II) removal rate increases with the increasing bed depth and residence time. The inlet concentration and residence time had significant effects on the Cu(II) removal analyzed by the Box–Behnken design (BBD). The Adams-Bohart model was in good agreement with the experimental data in representing the breakthrough curve. Copper fractions in the bricks descend in the order of organic matter fraction > Fe-Mn oxides fraction > carbonates fraction > residual fraction > exchangeable fraction, indicating that the lime sand bricks after copper adsorption reduce the long-term ecotoxicity and bioavailability to the environment.

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Section: Analytical Methods Of Cu(ii) and Its Sequential Extractionmentioning

confidence: 99%

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

et al. 2019

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“…The bio-accumulative rate (BR) was applied to evaluate the ability of wheat to absorb and enrich trace elements in a soil-wheat system [5,20,27,29,31]. The BR formula is…”

Section: Bio-accumulative Rate (Br)mentioning

confidence: 99%

“…Organic matter and pH can promote the mobility of pools of trace metal(loid)s [19]. Studies have proven that clay content also impacts As pools [20]. The pH, heat (drying), and cation exchange capacities (CECs) are major factors affecting the pools of trace metal(loid)s [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Pollution, Source, and Relationship of Trace Metal(loid)s in Soil-Wheat System in Hebei Plain, Northern China

Cai

Zhang

et al. 2019

Agronomy

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To study the complex migration and transformation of trace metal(loid)s in a soil–wheat system, 225 pairs of surface soil and wheat samples were collected from the Taihang Mountains front plain, Hebei Province, northern China. The concentrations and pools (F1, water-soluble; F2, exchangeable; F3, carbonate-bound; F4, humic acid-bound; F5, Fe–Mn oxide-bound; F6, organic matter-bound; and F7, residual) of Cu, Pb, Zn, Cr, Ni, Cd, and Hg, and the soil properties of the samples were analyzed. The sum of the F1, F2, F3, and F4 proportions of Cd was higher than that of the other trace metal(loid)s, implying that Cd has greater mobility. We found a significant correlation (p < 0.01) between pools of trace metal(loid)s and the corresponding elements in wheat and a significant correlation (p < 0.01) between pools of trace metal(loid)s and pH, cation exchange capacity, clay, and total organic carbon. The results of principle component analysis (PCA)indicated that Cr, Ni and As mainly come from natural sources and Cu, Pb, Zn, and Cd from mixed groups related to farming and industry, Hg come from the coal burning. In addition, the total target hazard quotients showed the presence of harmful levels of trace metal(loid)s in wheat.

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“…The latter are of particular interest, since they are complex heterogenous systems subject to flooding and redox fluctuations. It is important to note, that deltaic alluvial soils in highly urbanized regions are affected by strong anthropogenic pressure, which leads to their transformation due to agricultural or recreational activities, atmospheric and hydrogenic pollution (Arafa et al, 2015;Shokr et al, 2016;Thinh et al, 2018;Yan et al, 2018;Enya et al, 2019;Elbehiry et al, 2019;Ge et al, 2019;Hu et al, 2020;Lu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Exchangeable form of potentially toxic elements in floodplain soils along the river-marine systems of Southern Russia

Konstantinova¹,

Minkina²,

Nevidomskaya³

et al. 2021

Eurasian Journal of Soil Science (Ejss)

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Large rivers and especially their deltaic parts and adjacent coastal zones are subjected to strong anthropogenic influence and are often considered as hotspots of environmental pollution. The Don River is one of the largest and most important rivers in the South of Russia. The Don River basin is a highly urbanized area with developed agriculture and industry which negatively affect water quality, aquatic ecosystems and soils. The main objectives of the proposed research were to determine the levels exchangeable form of PHEs in soils of various aquatic landscapes of the study area, as well as to reveal the relationships between the content of exchangeable PTEs and the physical-chemical properties of floodplain soils. The obtained results showed that soils of the Lower Don and Taganrog Bay coastal zone are rather contrast in terms of properties and metal contents, which indicates the variability of landscapes, natural and anthropogenic processes in the studied systems. High CV values for a number of metals such as Pb, Zn, Cd and Cr indirectly indicate strong anthropogenic influence on these environments. The group median values for extractable forms for most of the metals except for Cu and Ni were higher for urbanized areas. The results of PCA analysis showed that there are two association of metals in terms of geochemical behavior and sources. The first one included Cr-Zn-Pb-Cd, the elements of anthropogenic origin, the second Mn, Ni, and Cu, which are probably of mixed origin. The obtained results showed that the Lower Don and Taganrog Bay coastal zone is a diverse and complex system subjected to anthropogenic activities, which is pronounced in the enrichment of aquatic soils with a number of metals and higher proportions of exchangeable forms from different types of sources that likely can be of both local and whole basin scale. KKeywords: Floodplain, heavy metals, Fluvisols, the Don River, Taganrog Bay, Azov Sea.

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Chemical speciation and bioavailability concentration of arsenic and heavy metals in sediment and soil cores in estuarine ecosystem, Vietnam

Cited by 32 publications

References 30 publications

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

Pollution, Source, and Relationship of Trace Metal(loid)s in Soil-Wheat System in Hebei Plain, Northern China

Exchangeable form of potentially toxic elements in floodplain soils along the river-marine systems of Southern Russia

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