Longterm study of transformation of potentially toxic element pollution in soil/water/sediment system by means of fractionation with sequential extraction procedures

Heltai, György; Győri, Zoltán; Fekete, Ilona; Halasz, Gábor; Kovács, Katalin; Takács, Anita; Boros, Norbert; Horváth, Márk

doi:10.1016/j.microc.2017.01.026

Cited by 33 publications

(8 citation statements)

References 48 publications

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“…Traditional surface strategies for improving antibacterial activity are based on the release of antimicrobial agents such as antibiotics, metallic ions (i.e., Ag + , Cu 2+ , Zn 2+ , etc. ) and inorganic nanoparticles, which may introduce some other latent side effects . Furthermore, it is difficult to in situ control their properties timely once these coatings have been implanted into the body together with implant materials.…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Feng¹,

Liu²,

Cui

et al. 2018

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Developing in situ disinfection methods in vivo to avoid drug-resistant bacteria and tissue toxicity is an urgent need. Here, the photodynamic and photothermal properties of the chitosan-assisted MoS (CS@MoS ) hybrid coating are simultaneously inspired to endow metallic Ti implants with excellent surface self-antibacterial capabilities. This coating, irradiated by only 660 nm visible light (VL) for 10 min, exhibits an antibacterial efficacy of 91.58% and 92.52% against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), respectively. The corresponding value is 64.67% and 57.44%, respectively, after irradiation by a single 808 nm near infrared light for the same amount of time. However, the combined irradiation using both lights can significantly enhance the efficiency up to 99.84% and 99.65% against E. coli and S. aureus, respectively, which can be ascribed to the synergistic effects of photodynamic and photothermal actions. The former produces single oxygen species under 660 nm VL while the latter induces a rise in temperature of implants, which can inhibit the growth of both E. coli and S. aureus. The introduction of CS can also promote the biocompatibility of implants, which provides a facile, rapid, and safe in situ bacteria-killing method in vivo without needing a second surgery.

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Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Feng¹,

Liu²,

Cui

et al. 2018

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195

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“…The load of potentially toxic elements (PTEs) in soil/water/sediment system is responsible for acute ecotoxicity which is determined by actual speciation of PTEs (Heltai, 2018) using sequential extraction procedure. For Sequential extraction procedures, vegetation samples were air dried, approximately 20 g of each sample was ashed at 150˚C from 0 hour and incresed gradually every hour by 25˚C until it reached 450˚C and kept stable for 10 hours.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the ecological risk caused by the mobility of radioactive elements and potentially toxic elements during the recultivation of the uranium mining deposit No.1 in Mecsek

Khumalo¹,

Heltai²,

Horváth³

2019

Abstract Book of the 18th Alps-Adria Scientific Workshop

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“…Although the implementation of sequential extraction schemes may include problems such as non-selectivity, re-adsorption, etc., these methodologies are important for metal fractionation in order to predict metal mobility and bioavailability [17,18]. Heltai et al [19] reiterate that the use of BCR-sequential extraction continues to be the traditional technique for evaluating environmental risks of PTE pollution considering these methodological problems, thus offering the potential for quantitative analysis of environmental mobility. Sequential extractions, as contamination indicators offer a fair compromise between knowledge on the distribution of material between solid fractions or components and the potential risks involved with their mobility or distribution [20].…”

Section: Introductionmentioning

confidence: 99%

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

Khumalo

Heltai

Várhegyi³

et al. 2021

Ecological Chemistry and Engineering S

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This study is part of the ongoing environmental monitoring program of the abandoned Mecsek uranium mine during the remediation period. During this program on the recultivated No.1 spoil bank, the radioactivity and the potentially toxic element (PTE) contents in the covering soil had shown some anomalies which refers to possible migration alongside the slope. Therefore, in a previous study, soil and plant samples were collected from top to bottom position of the slope and the total element content was determined by multi-elemental inductively coupled plasma-optical emission spectrometry. The results have indicated that there was a high possibility for PTEs to be mobile and available for uptake by plants. To confirm this indication in the present study for the soil samples the BCR sequential extraction procedure was applied to characterise the environmental mobility of PTEs, and it was compared with soil pH and cation exchange capacity (CEC). The results indicated that the ratio of Cd, Co, Mn, Pb, and U in the non-residual fractions ranged between 36.8 to 100 % and increased from top to bottom direction. The comparison showed that the samples with the lowest pH and CEC had the most mobility of the PTEs. The distribution of U, Cd, Mn, Co, and Pb in fractions indicated that some parts of the spoil deposit require additional steps to hinder the migration through the covering soil layer, and the BCR sequential extraction procedure has proven to be useful in providing information for the planning and management of remediation operations.

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Longterm study of transformation of potentially toxic element pollution in soil/water/sediment system by means of fractionation with sequential extraction procedures

Cited by 33 publications

References 48 publications

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Evaluation of the ecological risk caused by the mobility of radioactive elements and potentially toxic elements during the recultivation of the uranium mining deposit No.1 in Mecsek

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

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Longterm study of transformation of potentially toxic element pollution in soil/water/sediment system by means of fractionation with sequential extraction procedures

Cited by 33 publications

References 48 publications

Electrophoretic Deposited Stable Chitosan@MoS2 Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Electrophoretic Deposited Stable Chitosan@MoS2 Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Evaluation of the ecological risk caused by the mobility of radioactive elements and potentially toxic elements during the recultivation of the uranium mining deposit No.1 in Mecsek

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

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Product

Resources

About

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation

Electrophoretic Deposited Stable Chitosan@MoS₂ Coating with Rapid In Situ Bacteria‐Killing Ability under Dual‐Light Irradiation