Heavy Metal Contamination in Soil and Brown Rice and Human Health Risk Assessment near Three Mining Areas in Central China

Fan, Yu; Zhu, Tingping; Li, Mengtong; He, Junyi; Huang, Ruixue

doi:10.1155/2017/4124302

Cited by 110 publications

(59 citation statements)

References 42 publications

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“…Agricultural soil and water contamination has become a severe environmental problem in many developed and developing countries in recent years (Facchinelli et al 2001;Kalavrouziotis et al 2012;Fan et al 2017). Heavy metals, one of such toxic contaminants, are not bio-and thermo-degradable, hence accumulate in the environment up to hazardous levels (Chung et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Uptake and Translocation of Some Heavy Metals by Rice Crop (Oryza sativa) in Paddy Soils

Rahimi

Kolahchi

Charkhabi

2017

Agriculture (Pol'nohospodárstvo)

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Accumulation of heavy metals in edible crops is amongst major international concerns today. While consuming Lenjan variety of rice is very popular in Iran, limited evidence exists on its safety. Amid increasing public concern about the safety of locally grown and imported rice in the market, a field study was carried out to investigate uptake and translocation of Cd, Pb, Ni, and Zn by a local variety of rice crop (Oryza sativa) exposed to contaminated water. At harvest time and in paddy fields, 41 soil and plant samples were collected from four locations of Lenjan, central Iran; irrigated from Zayandeh Rood River. In the laboratory, different parts of the plant were milled, digested via acid digestion method, and then analysed for Cd, Pb, Ni and Zn using atomic absorption spectrophotometry. The results showed that average concentrations of Cd, Pb, Ni and Zn were 1.07, 17.22, 1.73 and 13.75 mg/kg in the plant’s stem; and 1.27, 12.32, 1.099 and 19.39 mg/kg in its grain, respectively. In general, both in the plant’s stem and grain, the Cd and Pb concentrations were much higher than the FAO/WHO standard and labelled as harmful for consumers. Moreover, among the studied heavy metals, Ni transported very weakly, while Cd and Zn conveyed most easily into the plant’s stem and grain. Of course, Pb was the least mobile metal. However, it had highly accumulated in the plant’s stem and grain.

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Section: Introductionmentioning

confidence: 99%

Uptake and Translocation of Some Heavy Metals by Rice Crop (Oryza sativa) in Paddy Soils

Rahimi

Kolahchi

Charkhabi

2017

Agriculture (Pol'nohospodárstvo)

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“…Total content of Mn in top soil samples studied (except SNP-3) varied from 250 to 720 mg/kg. According to Fan et al [34] this range value does not suggest Mn soil contamination. The content of Mn in SNP-3 (Reserve "Bukaka" -Fagus sylvatica ssp.…”

Section: Resultsmentioning

confidence: 90%

Elemental composition of surface soils in Nature Park Shumen Plateau and Shumen City, Bulgaria

Koleva

Koynova

Dragoeva

et al. 2018

Acta Scientifica Naturalis

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Anthropogenic activities cause environmental pollution and alter biogeochemical cycles. Soils in cities and their vicinity are exposed to different pollutants. Nature Park Shumen Plateau is a protected area situated in the proximity of Shumen (Bulgaria). The aim of this research was to compare elemental composition of surface soil samples from Nature Park with two areas in Shumen city. Soil samples from seven sites on the territory of Nature Park and from two urban sites were collected. The elemental composition of the samples was determined using Energy Dispersive X-Ray Fluorescence technique. Principal component analysis and cluster analysis were performed to interpret the complex data. The content of 24 elements was determined: Br, Y, Zr, Mo, Ag, Cd, Sn, Sb, I, Cs, Ba, La, Ce Si, K, Ca, Ti, Mn, Fe, Cu, Zn, Rb, Sr, and Pb. Results presented here and previously showed that concentrations of heavy metals Cu, Zn, Cd and Pb are below the upper limit according to Bulgarian legislation. Concentrations of Mn and Fe in samples from Nature Park were comparable to the literature data reported for unpolluted areas. Principal component analysis and cluster analysis show similarity of the content of 24 elements between samples from Nature Park and from Shumen city. These findings are in accordance with our previous positive results from Allium-test: cytogenetic endpoints showed a presence of harmful compounds in Nature Park soils. The content of heavy metals in the surface soils studied show a lack of environmental risk for Nature Park. However, a similar distribution pattern of the investigated elements in the park and two anthropologically influenced areas in Shumen city indicated a potential hazard in Nature Park.

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“…"Cd rice" incident occurred in 2014 at Youxian that triggered significant social panics, and food security problems caused by heavy metal pollution that have aroused wide focus since the accident. According to a research, the mean daily intake of Cd through rice is 179.9 mg/day/person, which outdistance the permissible limit stated by the World Health Organization (Fan et al 2017). Besides, vast Hg appended during processing of gold extraction leads to soil contamination around mines (Jiang et al, 2014).…”

Section: Mining Areasmentioning

confidence: 99%

Current Status and Development of Remediation for Heavy Metals in China

Xiao

Ding

Khan

et al. 2019

Appl Env Biotechnol

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At present, the problem of heavy metal pollution is a hot topic in the world. There are significant differences in the types and concentrations of metal ions distributed in each contaminated sites. In China, due to the vast territory and diverse ecoenvironments, the pollution situation is complex and variable, and the composite pollution is particularly obvious. Overall, pollution in the southern provinces is relatively higher than in other provinces, and Cd, Hg, Pb, Cr, As and Ni are listed as the priority pollutants for control. The metals have different physical or chemical specificity that allows them to be treated differently. Toxic Cr(VI) needs to be reduced to non-toxic Cr(III) before removal, whereas Cd(II) can form an insoluble Cd compound precipitate under alkaline conditions. Nevertheless, the characteristics of the soil itself such as pH, humidity, mineral composition, etc., are the hurdles in the process of remediation. Therefore, this review systematically summarizes the characteristics of heavy metal contaminated soil in major areas of China. It also proposes appropriate restoration methods and schemes such as phytoremediation and microbial remediation, which provides a theoretical basis for the elimination of heavy metals from a polluted land.

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Heavy Metal Contamination in Soil and Brown Rice and Human Health Risk Assessment near Three Mining Areas in Central China

Cited by 110 publications

References 42 publications

Uptake and Translocation of Some Heavy Metals by Rice Crop (Oryza sativa) in Paddy Soils

Uptake and Translocation of Some Heavy Metals by Rice Crop (Oryza sativa) in Paddy Soils

Elemental composition of surface soils in Nature Park Shumen Plateau and Shumen City, Bulgaria

Current Status and Development of Remediation for Heavy Metals in China

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