Characterization of the particle size fraction associated heavy metals in tropical arable soils from Hainan Island, China

Gong, Chen; Ma, Lingling; Cheng, Hangxin; Liu, Y.; Xu, Dong; Li, B.; Liu, F.; Ren, Yuanlin; Liu, Z.; Zhao, Chen; Yang, Ke; Nie, Hanjiang; Chunyan, Lang

doi:10.1016/j.gexplo.2013.01.002

Cited by 86 publications

(30 citation statements)

References 29 publications

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“…Cheng et al (2008) indicated that the concentration of Cu in clays was as high as 670.6 mg/kg, 4.77 times the concentration achieved in gravel. Gong et al (2013) drew a similar conclusion in a soil survey in Hainan, wherein the smallest fraction (<0.053 mm) had the highest heavy metal concentrations.…”

Section: Introductionsupporting

confidence: 55%

Removal of heavy metals and arsenic from a co-contaminated soil by sieving combined with washing process

Liao

Yan

2016

Journal of Environmental Sciences

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Batch experiments were conducted with a heavy metals and arsenic co-contaminated soil from an abandoned mine to evaluate the feasibility of a remediation technology that combines sieving with soil washing. Leaching of the arsenic and heavy metals from the different particle size fractions was found to decrease in the order: < 0.1, 2-0.1, and > 2 mm.With increased contact time, the concentration of heavy metals in the leachate was significantly decreased for small particles, probably because of adsorption by the clay soil component. For the different particle sizes, the removal efficiencies for Pb and Cd were 75%-87%, and 61%-77% for Zn and Cu, although the extent of removal was decreased for As and Cr at <45%. The highest efficiency by washing for Pb, Cd, Zn, and As was from the soil particles >2 mm, although good metal removal efficiencies were also achieved in the small particle size fractions. Through SEM-EDS observations and correlation analysis, the leaching regularity of the heavy metals and arsenic was found to be closely related to Fe, Mn, and Ca contents of the soil fractions. The remediation of heavy metal-contaminated soil by sieving combined with soil washing was proven to be efficient, and practical remediation parameters were also recommended.

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Section: Introductionsupporting

confidence: 55%

Removal of heavy metals and arsenic from a co-contaminated soil by sieving combined with washing process

Liao

Yan

2016

Journal of Environmental Sciences

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“…Studies on the relationship among urbanized areas, waste water and mining area soil present the same results, suggesting that Cd and Pb accumulate primarily in fine particles (Luo et al 2011;Harter and Naidu 1995;Quenea et al 2009). Macro-aggregates have the highest mass loading for Cd and Pb, followed by colloid and micro-aggregates, in a study of typical black and bog arable soils (Gong et al 2012). This occurs because the heavy metal pollutants in the soil first adsorb on the macroaggregate surface or because fine particles containing heavy metals gather to form large particle size aggregates (Acosta et al 2011;Varrica et al 2003).…”

Section: Characteristics Of Heavy Metal and Environmental Effect In Tmentioning

confidence: 99%

“…The phosphorus content can influence the soil pH and content of phosphate ions and decrease the availability of heavy metals (Khan and Jones 2009). There were many researches on the heavy metal content and distribution characteristics of soil aggregates in urban soil, dust and arable soil (Gong et al 2014;Soylak 2015;Jayarathne et al 2017). However, there is less research on soil aggregates that are characteristic of Pb-Zn mining areas.…”

Section: Introductionmentioning

confidence: 99%

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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“…They are followed by data processing, the selection of a statistical method, then the interpretation and evaluation of the results, and eventually provide final pieces of information on the state of the environment and rectifying (if necessary) steps. The reliability and precision of determinations are highly important when they refer to toxic substances present in the environment (Hlavay et al 1992;Gong et al 2014;Klojzy-Karczmarczyk 2014;AlHwaiti and Al-Khashman 2015;Stala-Szlugaj 2016). Deleterious elements include heavy metals, particularly Cd, Pb, Tl and As (in fact, arsenic is a metalloid, but for the brevity it will be further referred to as a metal).…”

Section: Introductionmentioning

confidence: 99%

“…The dependency between the content of elements and the grain size of the analytical sample was dealt with, among others, by Ljung et al (2006), Yamamoto et al (2006), Ajmone-Marsan et al (2008), Gong et al (2014) and Kosa and Kicińska (2016). The latter authors underlined a high concentration of As, Cd, Pb and Cr in the finest grain fractions.…”

Section: Introductionmentioning

confidence: 99%

Health risk assessment related to an effect of sample size fractions: methodological remarks

Kicińska

2017

Stoch Environ Res Risk Assess

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Contents of As, Cd, Co, Cr, Cu, Ni, Pb and Zn were determined in the material collected in sandboxes of seven spa resorts located in S Poland (CCE) and their results used to establish a health risk of children. After sieving out grains [ 2 mm, the bulk samples were quantitatively separated into four grain fractions: 2000-1000, 1000-200, 200-63 and \ 63 lm. In each of them were determined: the mineral composition, the total contents of the elements, and the distribution of the elements among the fractions distribution factor. In the bulk material \ 2 mm, the totals of the elements are 5-64 times lower than in the finest fractions (\ 63 lm). Considering that the finest fractions are enriched in clay minerals such as clinochlore, illite and kaolinite, which can adsorb and desorb metals, this material is most dangerous for children, staying both permanently and temporarily in the spas. The total health risks HI resulting from non-carcinogenic elements present in the fractions \ 63 lm are 1.26 and 0.94, for the children-residents 3 and 6 years old, respectively. The figures are disturbing as one of them exceeds and the other is close to a permissible limit of 1. The highest contribution (93.4%) into the total HI is caused by inadvertent swallowing the soil ''dirt'': the ingestion path HQ ing for the 3 years old residents is 1.17, and for the 6-year olds 0.88. With respect to the elements, the highest is the risk resulting from Pb: HQ in values of the residents are 4.71E-01 and 3.54E-01 for the 3-year olds and the 6-year olds. Slightly lower are the HQ ing values calculated for both age groups: in the case of Cr-3.12E-01 and 2.34E-01 and As-2.92E-01 and 2.19E-01). The dermal path (HQ dermal ) contributes to the total HI much less as it equals 6.5%, while the contribution of the inhalation path (HQ inhal ) is considerably the lowest and equals only 0.1%. The Risk indexes determined in the case of cancerogenic components for both age groups of the spa residents are lower than the permissible limit 10E-5 and equal 6.48E-06 and 9.72E-06, respectively. Considering the children that only visit the spas, all the calculated indexes, i.e., HI and Risk, are significantly lower than those determined for the children-residents.

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Characterization of the particle size fraction associated heavy metals in tropical arable soils from Hainan Island, China

Cited by 86 publications

References 29 publications

Removal of heavy metals and arsenic from a co-contaminated soil by sieving combined with washing process

Removal of heavy metals and arsenic from a co-contaminated soil by sieving combined with washing process

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

Health risk assessment related to an effect of sample size fractions: methodological remarks

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