Nano mercury selenide as a source of mercury for rice

Xie, Hongxin; He, Liu; Xue, Tian; Zhang, Wei; Cui, Liwei; Shang, Lihai; Zhao, Jiating; Bai, Li; Li, Yufeng

doi:10.1016/j.envpol.2022.120918

Cited by 6 publications

(4 citation statements)

References 51 publications

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“…(2022) found that biosynthetic Nano-Se significantly reduced the Hg concentration in roots and shoots of pak choi. However, Xie et al. (2023) found that nano-sized HgSe (Nano-HgSe) can be decomposed and can serve as an environmental source of Hg in rice.…”

Section: Discussionmentioning

confidence: 99%

“…For instance, Zhu et al (2022) found that biosynthetic Nano-Se significantly reduced the Hg concentration in roots and shoots of pak choi. However, Xie et al (2023) found that nano-sized HgSe (Nano-HgSe) can be decomposed and can serve as an environmental source of Hg in rice. Therefore, more work is needed to investigate the factors that influence Nano-HgSe formation and the mechanism of Hg methylation after exposure of rice to Nano-HgSe.…”

Section: Factors Of Exogenous Se Reducing Hg Accumulation In Plantmentioning

confidence: 99%

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A quantitative review of the effects of Se application on the reduction of Hg concentration in plant: a meta-analysis

et al. 2023

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Mercury (Hg) is a highly toxic heavy metal entering the human body through the food chain after absorption by plant. Exogenous selenium (Se) has been suggested as a potential solution to reduce Hg concentration in plants. However, the literature does not provide a consistent picture of the performance of Se on the accumulation of Hg in plant. To obtain a more conclusive answer on the interactions of Se and Hg, 1,193 data records were collected from 38 publications for this meta-analysis, and we tested the effects of different factors on Hg accumulation by meta-subgroup analysis and meta-regression model. The results highlighted a significant dose-dependent effect of Se/Hg molar ratio on the reduction of Hg concentration in plants, and the optimum condition for inhibiting Hg accumulation in plants is at a Se/Hg ratio of 1–3. Exogenous Se significantly reduced Hg concentrations in the overall plant species, rice grains, and non-rice species by 24.22%, 25.26%, and 28.04%, respectively. Both Se(IV) and Se(VI) significantly reduced Hg accumulation in plants, but Se(VI) had a stronger inhibiting effect than Se(IV). Se significantly decreased the BAFGrain in rice, which indicated that other physiological processes in rice may be involved in restricting uptake from soil to rice grain. Therefore, Se can effectively reduce Hg accumulation in rice grain, which provides a strategy for effectively alleviating the transfer of Hg to the human body through the food chain.

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Section: Discussionmentioning

confidence: 99%

Section: Factors Of Exogenous Se Reducing Hg Accumulation In Plantmentioning

confidence: 99%

A quantitative review of the effects of Se application on the reduction of Hg concentration in plant: a meta-analysis

et al. 2023

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“…Since the study of the Minamata disease in the 1950s, there has been growing concern about the accrual of Hg, mainly MeHg, in food and its potential influence on human health and the milieu. For example, studies have shown that MeHg can accrue in fish and other marine organisms, posing a risk to seafood consumers (Barst et al, 2022; Issifu et al, 2022; McKinney et al, 2022; Motta et al, 2022; Riesgo et al, 2023; Zampetti & Brandt, 2023), and MeHg is also found in elevated concentrations in rice, which threaten food security (Aslam et al, 2022; Hu et al, 2023; Y. Huang et al, 2023; Xie et al, 2023). Application of nano activated carbon and rice hull biochar decreases the uptake of Hg in rice plants (L. Wang, Hou, et al, 2020; J. Wang, Shaheen, et al, 2020; Xing et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of mercury contaminated soil and water: A review

Kumar,

Chawla

et al. 2023

Land Degrad Dev

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Mercury (Hg) pollution of soil and water environments is a major global threat to human health, agri‐food systems and ecosystems and industrial activities mainly coal combustion augmented their content in different environmental media. Bioremediation is a nature‐based solution involving microbial‐ and plant‐based (phytoremediation) technologies that clean‐up Hg contaminated sites. Here, we review Hg‐resistant bacteria and how latest insights in our understanding of the cellular and biochemical mechanisms of the mer operon genes responsible for Hg resistance and transformation have facilitated developments in microbial Hg‐bioremediation. We also review the phytoremediation mechanisms, including those of bacterial‐ and fungi‐assisted phytoremediation processes, which have shown promising results in reducing Hg2+ to Hg0. This review provides a detailed knowledge of novel Hg bioremediation mechanisms and methods. Consequently, microbial‐ and phyto‐based bioremediation technologies have a critical role in the reclamation of Hg‐contaminated environments and the protection of human health and ecosystems.

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“…11,12 In some steel plants, Se is also used as a filter to remove Mercury from exhaust fumes. 13 This crystalline grey-black material is used in solar cells, transistors, hall sensors, and infrared photodetectors. Additionally, it serves as an ohmic contact to wide-gap II-VI semiconductors, such as zinc oxide and selenium.…”

mentioning

confidence: 99%

Electronic and Optical Properties of Mn-Doped HgSe Topological Insulator for Spintronic Devices

Habibes,

Boukortt,

Meskine

et al. 2024

ECS J. Solid State Sci. Technol.

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HgSe is a mercury chalcogenide material of the HgX family (where X = S, Se, Te) which crystallises in the zincblende crystal phase. The electronic band structure of HgSe is indicative of a new state of matter in the condensed phase that is of great interest for fundamental physics and possibly new applications. This paper reports ab-initio calculations of the structural, electronic, magnetic, and optical properties of zincblende mercury selenide (HgSe) doped with manganese (Mn) in the inter sites HgMnxSe, with x = 0, 0.058, and 0.117, using the framework of spin-polarized density functional theory. The aim of our investigation is to discuss the different properties of this doped material in order to improve the promising new domain of spintronics with topological systems. Both the GGA+U+mBJ approach and spin-orbit coupling are used for band structure calculations and density of states. The results show a nontrivial topological semimetal order for HgSe and a ferromagnetic topological and metallic behaviour for HgMnxSe. The frequency response of optical properties shows interesting characteristics. Furthermore, the variation with concentration x of the critical point for each of the optical parameters is similar to that of the inverted band gap.

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Nano mercury selenide as a source of mercury for rice

Cited by 6 publications

References 51 publications

A quantitative review of the effects of Se application on the reduction of Hg concentration in plant: a meta-analysis

A quantitative review of the effects of Se application on the reduction of Hg concentration in plant: a meta-analysis

Bioremediation of mercury contaminated soil and water: A review

Electronic and Optical Properties of Mn-Doped HgSe Topological Insulator for Spintronic Devices

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