The heavy metal partition in size-fractions of the fine particles in agricultural soils contaminated by waste water and smelter dust

Zhang, Haibo; Luo, Yongming; Makino, Tomoyuki; Wu, Longhua; Nanzyo, Masami

doi:10.1016/j.jhazmat.2013.01.019

Cited by 98 publications

(23 citation statements)

References 30 publications

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“…In different soil horizons, the proportion of exchangeable and reducible Cd in the RCH (22.7 ± 0.8% and 12.4 ± 1.4%, respectively) was much higher than that in the YSH (16.9 ± 3.1% and 5.1 ± 3.5%, respectively). This was consistent with results obtained by several authors (Guo et al, 2013;Zhang et al, 2013) who found that fine particles were important reservoirs of mobile Cd in soils. The relatively high mobility of Cd in soils might cause potential environmental risks to groundwater by downward leaching or food chain by plant uptake.…”

Section: Heavy Metal Fractions In the Typical Red Clay Horizonsupporting

confidence: 93%

Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals

Zhang

et al. 2017

Journal of Geochemical Exploration

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a b s t r a c t a r t i c l e i n f oThe source-area weathering and pedogenesis processes in the alluvial soil profiles might affect depth distribution of heavy metals. Red clay horizon (RCH) with a thickness of 5-50 cm in a 1 m soil profile has been found ubiquitously in the Yellow River Delta (YRD). The occurrence of this RCH was supposed to be related with the frequent shifting of the Yellow River tail channel in the Yellow River Delta (YRD). The geochemical features of the RCH were distinct from its upper or lower yellow silt horizon (YSH). The average median grain size of the RCH (10.5 μm) was almost three times lower than that of the YSH (29.9 μm). Meanwhile, the RCH was characterized of higher chemical index of alteration (CIA), magnetic susceptibility (χ lf ) and frequency-dependent magnetic susceptibility (χ fd ) values than the YSH, which implied a stronger source-area weathering and pedogenesis intensity of the RCH. Besides the distinctive characteristics of the RCH, it also accumulated significantly (p b 0.05) higher mean contents of Cu, Zn, Pb, Cr, Ni and Co, and maximum content of Cd in the RCH than that in the YSH. The principal component analysis (PCA) suggested that distribution of the heavy metals in the YRD soil profiles was significantly related to the content of aluminosilicates, oxides, clay fraction, χ lf and χ fd , however, such a correlation was not found except for Pb in the YSH. In addition, result of BCR sequential extraction indicated that a higher percentage of Fe-Mn oxides associated fraction was in the RCH than in the YSH for the heavy metals of Pb and Co. Cadmium was observed at higher percentage of exchangeable fraction in the RCH than in the YSH, implying a higher environmental risk of the Cd in the RCH.

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Section: Heavy Metal Fractions In the Typical Red Clay Horizonsupporting

confidence: 93%

Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals

Zhang

et al. 2017

Journal of Geochemical Exploration

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“…HMs in the wastewater polluted soil (with high organic matter) were mostly bound to the organic fraction in the wastewater while they were mainly associated with Fe/Mn oxides in the smelter dust polluted soil. Cadmium was mostly in the exchangeable fraction in both soils while lead in the smelter dust polluted soil was dominated by the reducible fraction [47].…”

Section: Fractionation Of Heavy Metal (Loid)s In Agricultural Soils;mentioning

confidence: 97%

Metal (Loid)s in Farmland Soils and Strategies to Reduce Bioavailability

Fayiga¹,

Nwoke²

2017

Open J Environ Biol

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High concentrations of heavy metal (loid)s (HMs) in farmland soils reduces crop yield and contaminates the food chain. Exposure to HMs in the diet results in several adverse health effects such as cancer, reproductive health problems and cardiovascular diseases. Understanding the origin and fractionation of these toxic substances will provide direction for reducing their bioavailability in contaminated farmland soils. HMs are added to farmland soils through activities such as irrigation, organic and inorganic fertilization, pest control, and mining. Weathering of parent material and atmospheric deposition can also increase the levels of HMs in the soil. Fractionation of HM contaminated soils provides information on availability of HMs such as Pb, Cd, As, Cr and Cu to soil biota and plants. Several studies have reported that Pb is mostly associated with Fe and manganese oxides (reducible fraction) while Cd is mostly associated with the most mobile fraction (exchangeable fraction). The application of organic and inorganic soil amendments such as vermiculite, zeolite, composts and crop residue to contaminated farmland soils converts HMs from the plant available fractions to the less mobile fractions. HM resistant microbes can change HMs to a less mobile fraction or less mobile oxidation state. The combination of HM resistant microbes, HM tolerant plants, and soil amendments can be used to reduce mobility of HMs in contaminated farmlands. Capsule:The mobility of heavy metal (loid)s in polluted farmland soils depends strongly on its association with soil components.

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“…For instance, Pb was concentrated in silt obtained from five European cities (AjmoneMarsan et al 2008). In addition, a higher enrichment factor of Cd and Pb in silt was observed in both the agricultural soil of Fuyang Country in China and the mining soil in Cerdeirinha and Penedono (Zhang et al 2013;Gomes et al 2016).…”

Section: Introductionmentioning

confidence: 94%

Distribution characteristics of cadmium and lead in particle size fractions of farmland soils in a lead–zinc mine area in Southwest China

Zhan

et al. 2018

Environ Syst Res

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Background: Cd and Pb were the main pollution elements in Pb-Zn mining areas. Several studies have focused on heavy metal pollution and risk assessment in the Huize Pb-Zn mining area. In the present study, the soil aggregate composition, chemical properties, contents and chemical fractions of Cd and Pb were analysed in soils at depths of 0-60 cm in the Huize Pb-Zn mining area. Agricultural soils were sampled at depths of 0-20, 20-40 and 40-60 cm surrounding the Pb-Zn mine. The particle size fractions were determined by the aggregate composition of macroaggregates (0.25-2 mm), micro-aggregates (0.053-0.25 mm), silt (0.002-0.053 mm) and colloid (< 0.002 mm).Results: There was a large proportion of the macro-aggregate (52.4%) and less of the colloid (1.8%). With a decrease in particle size, the pH, organic matter contents, cation exchange capacity, and free iron oxide increased in the soil aggregates. Although the total and available Cd and Pb contents were highest in the colloid, the macro-aggregate maximally contributed to the total Cd (48.18%), total Pb (53.48%) and available Pb (47.42%) content, and the colloid maximally contributed to the available Cd (47.21%) in soils. The Cd and Pb existed primarily as residual fractions, followed by Fe-Mn oxide fraction and the exchangeable fraction in soil aggregates. There were higher distribution factors for the residual and exchangeable fractions of both Cd and Pb in the colloid (DF > 33). Furthermore, there were close correlations between the Cd and Pb fractions and the pH and the phosphorus content and between the exchangeable Pb content and the content of organic matter, cation exchange capacity, and free iron oxide in soil aggregates. Conclusion:Cd and Pb existed mainly in the micro-aggregate and colloid and that their chemical fractions were closely related to the chemical properties in soil aggregates of the polluted farmland.

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The heavy metal partition in size-fractions of the fine particles in agricultural soils contaminated by waste water and smelter dust

Cited by 98 publications

References 30 publications

Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals

Occurrence of red clay horizon in soil profiles of the Yellow River Delta: Implications for accumulation of heavy metals

Metal (Loid)s in Farmland Soils and Strategies to Reduce Bioavailability

Distribution characteristics of cadmium and lead in particle size fractions of farmland soils in a lead–zinc mine area in Southwest China

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