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Metalloids - DOAJ

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Last Updated: 23 April 2022

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Stable Isotope Fractionation of Metals and Metalloids in Plants: A Review

Ca and Mg fractionate by root apoplast adsorption, Si through diffusion during membrane transportation, Fe and Cu by reduction prior to membrane transport in strategy I plants, and Zn, Cu, and Cd by membrane transport during uptake, and Ca and Mg fractionate through membrane transport. Mg, Cu, and Zn's isotope fractionation rates changed by shifts in isotope fractionation patterns, meaning that isotope process tracing can be used as a tool to identify and quantify various uptake pathways in reaction to abiotic stresses. However, the determination of isotope fractionation in plants is difficult, considering that several isotope fractionation factors related to specific reactions are uncertain and experiments are often exploratory. The interdisciplinary expertise of plant and isotope geochemical scientists is required to fully benefit the benefits of isotope process tracing in plants.

Source link: https://doi.org/10.3389/fpls.2022.840941


Potential for leaching of heavy metals and metalloids from crystalline silicon photovoltaic systems

Photovoltaics are a quickly growing market as global energy markets shift toward "greener" alternatives. Despite the simple energy benefits of solar power, photovoltaic panels, and their structural support systems, several potentially hazardous components used in their construction are often included in their design. We analyzed soil samples from beneath photovoltaic modules to see if they are enriching by metals and metalloids present in panel systems in this research. The soil samples were collected directly underneath c-Si photovoltaic modules and adjacent fields. In soil samples closer to PV systems, Selenium, strontium, lithium, nickel, and barium levels were found in soil samples, up significantly. Despite concentration differences for some components near vs. far from the panel systems, no elements were found in concentrations that would pose a threat to nearby ecosystems, on average. PV systems, thus, remain a cleaner alternative to traditional energy sources, such as coal, especially during the operation of these energy production plants.

Source link: https://doi.org/10.5027/jnrd.v9i0.02


Removal of Heavy Metals and Metalloids from Water Using Drinking Water Treatment Residuals as Adsorbents: A Review

Heavy metal pollution is one of the most significant environmental problems. This paper examines the ability of residuals produced as a by-product of water treatment plants to adsorb heavy metals and metalloids from water. Water treatment residuals may be a suitable substrate for producing an effective adsorbent for the removal of heavy metals and metalloids from water, according to a review of the literature.

Source link: https://doi.org/10.3390/min9080487


Biosorbents for Removing Hazardous Metals and Metalloids

Using simple and inexpensive methods, Biosorbents for remediating aquatic environmental media polluted with harmful heavy metals and metalloids such as Pb, Cr, Sb, and Sb were made from lignin waste, orange and apple juice residues, seaweed, and grape wastes. During pulp production, lignophenol gel, such as lignin from sawdust, was formulated by immobilizing the catechol functional groups onto lignin from sawdust, while lignophor gel was made directly from waste liquor produced during pulp production. The orange and apple juice residues, which are high in pectic acid, were quickly converted from alkali to biosorbents that effectively blocked Pb.

Source link: https://doi.org/10.3390/ma10080857


Uptake of metals and metalloids by Conyza canadensis L. from a thermoelectric power plant landfill

In Conyza canadensis L. , which was obtained from the thermoelectric power plant "Kolubara"'s fly ash landfill, thirteen metals and metalloids were found. According to the Community Bureau of Reference's three-step sequential extraction method, fly ash samples were collected together with the plant samples and subjected to sequential extraction according to the plant samples' three-step sequential extraction method. Metals and metalloids were determined by inductively coupled plasma optical emission spectrometry in plant root and the aboveground portion of the fly ash samples, and they were correlated with their contents in the fly ash samples. Metals were discovered from fly ash and their translocation to the aboveground portion, as well as the geoconcentration factor and translocation factors. As reported, fly ash samples in the immediate vicinity of the active cassette contained higher amounts of the element. Conyza canadensis L. 's efficient uptake of other metals from fly ash was comparable to As.

Source link: https://doi.org/10.2298/ABS151011071V


Spatial Distributions, Sources, Potential Risks of Multi-Trace Metal/Metalloids in Street Dusts from Barbican Downtown Embracing by Xi’an Ancient City Wall (NW, China)

A total of 116 dust samples in downtown were collected, and the geographical distribution, source, and health risk profile of 19 trace metal/metalloids embedded in street dusts were systematically investigated. Pb was ranked at a point of significant ecological risk in comparison to the estimation of the potential ecological risk index of toxic trace metals in comparison to the evaluation of the potential ecological risk indicator of hazardous trace metals. Except for the non-carcinogenic danger of Cr and As to children and adults and the carcinogenic risk of Cr and As to adults, most trace metals exposed to children and adults were no significant health risks, except for the non-carcinogenic risk of Cr and As to children and adults. It was predicted that the barbican city, surrounded by the Xi'an Ancient City Wall at 12 m high, would trap trace metal emissions, raising the health risk for local residents.

Source link: https://doi.org/10.3390/ijerph16162992


Accumulation Characteristics of Metals and Metalloids in Plants Collected from Ny-Ålesund, Arctic

By long-range atmospheric transport from mid- and low latitudes, Toxic elements can be transported to polar regions, contributing to enriched polar atmosphere elements, particularly in the Arctic. In polar regions, the plants can be useful bioindicators of element contamination in environments, but details regarding element enrichment and sources of plants are lacking. Entity concentrations in various plant species are found in different plant species, according to the study, and component concentrations in D. angustum and C. arcticum are usually higher. Elevated element concentrations were discovered near residential areas in spatial terms, while low element levels were present at the sites far away from settlement points. The more delicate plants, as well as enrichment testing, have a great potential for monitoring atmospheric Cd, Hg, and Zn pollution in Ny-lesund, and D. angustum and D. caespitosa, respectively.

Source link: https://doi.org/10.3390/atmos11101129

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions