Factors influencing heavy metal availability and risk assessment of soils at typical metal mines in Eastern China

Zhong, Xi; Chen, Ziwu; Li, Yaying; Ding, Kengbo; Liu, Wen-Shen; Liu, Ye; Yuan, Yongqiang; Zhang, Miaoyue; Baker, A. J. M.; Yang, Wenjun; Fei, Ying-heng; Wang, Yujie; Chao, Yuanqing; Qiu, Rongliang

doi:10.1016/j.jhazmat.2020.123289

Cited by 238 publications

(51 citation statements)

References 90 publications

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“…In China, mining activities are prevalent and this has led to serious soil HMs contamination nationwide (Zhong et al, 2020). According to the Chinese National Soil Contamination Survey Report, approximately 33.4% of soil around mining sites were contaminated with HMs (Mee and Mnr, 2014).…”

Section: Introductionmentioning

confidence: 99%

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Zou¹,

Lu²,

Dai³

et al. 2021

Front. Environ. Sci.

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Mining activity is a growing environmental concern as it contributes to heavy metals (HMs) pollution in agricultural soils. Microbial communities play an important role in the biogeochemical cycling of HMs and have the potential to be used as bioindicators. Arsenic (As) and lead (Pb) are the most hazardous HMs and are mainly originated from mining activities. However, spatial variation in microbial community in response to As and Pb contamination in paddy soils remains overlooked. In this study, the biological and chemical properties of sixteen soil samples from four sites (N01, N02, N03, and N04) near a Pb-Zn mining site at different As and Pb levels were examined. The results showed that soil pH, total As and Pb, bioavailable As and Pb, nitrate-nitrogen (NO3−-N) and ammonia-nitrogen (NH4+-N) were the most important factors in shaping the bacterial community structure. In addition, significant correlations between various bacterial genera and As and Pb concentrations were observed, indicating their potential roles in As and Pb biogeochemical cycling. These findings provide insights into the variation of paddy soil bacterial community in soils co-contaminated with different levels of As and Pb.

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Section: Introductionmentioning

confidence: 99%

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Zou¹,

Lu²,

Dai³

et al. 2021

Front. Environ. Sci.

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“…The most dangerous factor in terms of ecology is the increased PTE concentration in the near-surface layer of the soil due to the danger of transfer via the root system of plants to their aboveground parts [ 31 ]. This, in turn, creates the risk of easy penetration to further links of the food chain.…”

Section: Resultsmentioning

confidence: 99%

Nano Zero Valent Iron (nZVI) as an Amendment for Phytostabilization of Highly Multi-PTE Contaminated Soil

et al. 2021

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In recent years, a lot of attention has been given to searching for new additives which will effectively facilitate the process of immobilizing contaminants in the soil. This work considers the role of the enhanced nano zero valent iron (nZVI) strategy in the phytostabilization of soil contaminated with potentially toxic elements (PTEs). The experiment was carried out on soil that was highly contaminated with PTEs derived from areas in which metal waste had been stored for many years. The plants used comprised a mixture of grasses—Lolium perenne L. and Festuca rubra L. To determine the effect of the nZVI on the content of PTEs in soil and plants, the samples were analyzed using flame atomic absorption spectrometry (FAAS). The addition of nZVI significantly increased average plant biomass (38%), the contents of Cu (above 2-fold), Ni (44%), Cd (29%), Pb (68%), Zn (44%), and Cr (above 2-fold) in the roots as well as the soil pH. The addition of nZVI, on the other hand, was most effective in reducing the Zn content of soil when compared to the control series. Based on the investigations conducted, the application of nZVI to soil highly contaminated with PTEs is potentially beneficial for the restoration of polluted lands.

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“…The mobility and bioavailability of heavy metals depend on the chemical, physical, biological and microbiological properties of the soil. Factors that affect the bioavailability of metals include pH, and organic matter content [70,71]. It also depends on the mechanisms of absorption, the oxidation state of the metals present, soil cation exchange capacity, nature, the presence of other nutrients in the soil, soil salinity, but also the climate, which can significantly affect the availability of metals in the soil [68,72,73].…”

Section: Agrochemical Characteristics Contents Of Nutrients and Heavy Metals In Soilmentioning

confidence: 99%

Heavy Metals Presence in the Soil and Their Content in Selected Varieties of Chili Peppers in Slovakia

Lidiková

Čeryová

Šnirc

et al. 2021

Foods

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Capsicum chili peppers are popular vegetables in Slovakia. They provide a supply of health-promoting substances, but contaminated vegetables can pose a serious health risk to the people who consume them. Therefore, the aim of this study was to determine the content of heavy metals (Mn, Zn, Cr, Cu, Ni, Cd, Pb and Hg) in the soil as well as in selected varieties of the genus Capsicum grown in southern Slovakia. The results were compared with the limit values given by the Law no. 220/2004 (valid in the SR) as well as threshold values proposed by the European Commission (EC) (2006). The gained result showed that the total content of Cd (1.64 mg/kg) as well as the available mobile forms of Cd (0.12 mg/kg) and Pb (0.26 mg/kg) was exceeded on the soil on which Capsicum cultivars were grown. The limit values of other monitored heavy metals (Mn, Zn, Cr, Cu, Ni, and Hg) were not exceeded. The studied species of the genus Capsicum did not accumulate monitored heavy metals. It can be stated that consumption of chili peppers does not pose any risk for human health.

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Factors influencing heavy metal availability and risk assessment of soils at typical metal mines in Eastern China

Cited by 238 publications

References 90 publications

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Nano Zero Valent Iron (nZVI) as an Amendment for Phytostabilization of Highly Multi-PTE Contaminated Soil

Heavy Metals Presence in the Soil and Their Content in Selected Varieties of Chili Peppers in Slovakia

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