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Toxics
Special Issues
Characterization and Risk Assessment of Heavy Metals in Dust
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Characterization and Risk Assessment of Heavy Metals in Dust

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Metals and Radioactive Substances".

Deadline for manuscript submissions: closed (16 April 2024) | Viewed by 1717

Special Issue Editors

Dr. Ruimin Liu

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Guest Editor
School of Environment, Beijing Normal University, Beijing 100875, China
Interests: environmental behavior of pollutants; multi medium migration simulation of pollutants in watersheds; toxicological effects; ecological risk; health risk
Special Issues, Collections and Topics in MDPI journals
Dr. Linfang Wang

E-Mail
Guest Editor
Sorghum Research Institute, Shanxi Agricultural University, Jinzhong, China
Interests: new pollutants; pollutant migration and assessment; chemical exposure; health risk assessment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Due to the strong impact of anthropogenic activities and the weak self-regulating ability of ecosystems, many cities suffer from different levels of heavy metal contamination. As a priority environmental pollutant, heavy metal contamination has been a hot research topic. Road dust is a source and acts a sink for heavy metals, the pollution of which could result in the contamination of the soil, atmosphere, and water, and further threaten urban residents’ health. Basic scientific problems such as the pollution, risk, source, and optimal control of pollution factors of heavy metals in road dust still need to be addressed, and systematic qualitative and quantitative research is still needed.

In this Special Issue on the "Characterization and Risk Assessment of Heavy Metals in Dust", we aim to focus on the pollution, ecological and health risks, source, and optimal control of pollution factors of heavy metals in road dust. Authors are welcome to submit original research articles and reviews that cover the related fields.

Dr. Ruimin Liu
Dr. Wang Linfang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Toxics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • heavy metals
  • road dust
  • source apportionment
  • toxicity
  • risk assessment
  • spatio-temporal distribution
  • optimal control

Published Papers (2 papers)

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Research

13 pages, 2234 KiB  
Article
Assessing Metal Exposure and Leaching from Discarded Cigarette Butts: Environmental Analysis and Integrated Waste Management Approaches
by Muhammad Faisal, Zai-Jin You, Noman Ali Buttar, Muhammad Bilal Idrees, Muhammad Naeem, Shoaib Ali, Basharat Ali, Abeer Hashem and Elsayed Fathi Abd_Allah
Toxics 2024, 12(5), 324; https://doi.org/10.3390/toxics12050324 - 29 Apr 2024
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Abstract
Cigarette butts, often discarded as litter, are considered a common form of waste, containing a variety of pollutants within this hazardous residue. This study, which was designed to assess the environmental release of certain metals from cigarette butts, investigates a variety of scenarios [...] Read more.
Cigarette butts, often discarded as litter, are considered a common form of waste, containing a variety of pollutants within this hazardous residue. This study, which was designed to assess the environmental release of certain metals from cigarette butts, investigates a variety of scenarios under varying climatic conditions. Thus, in order to assess the level of metal contamination, samples of cigarette butts were collected in urban areas from seven popular brands in China, smoked artificially, and examined through graphite furnace atomic absorption (GF-AAS). The findings indicated mean concentrations of 1.77 for Cr, 2.88 for Ni, 12.93 for Cu, 24.25 for Zn, and 1.77 µg/g for Pb in the case of newly smoked butts. The emission of each of the metals increases to 8–10% when cigarette butts remain in the environment for an extended period of time. Furthermore, rainfall can accelerate metal leaching, reaching values of 18–20% compared to the controlled scenario. The worst-case scenario releases 2129.31 kg/year of metals into the environment, while the best-case scenario sees a lower release of 844.97 kg/year. The data reflect variations in metal emissions across different scenarios. There was also a strong correlation between cigarette butts in public spaces and cities. This research highlights the need to educate smokers and increase urban maintenance efficiency to reduce this litter and the metals it leaches into the environment. Full article
(This article belongs to the Special Issue Characterization and Risk Assessment of Heavy Metals in Dust)
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12 pages, 2915 KiB  
Article
Ecological Risk and Pollution Assessment of Heavy Metals in Farmland Soil Profile with Consideration of Atmosphere Deposition in Central China
by Yang Zhao, Yuxin Hou and Fei Wang
Toxics 2024, 12(1), 45; https://doi.org/10.3390/toxics12010045 - 08 Jan 2024
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Abstract
Heavy metals (HMs) in agricultural land have caused serious environmental problems, resulting in severe contamination of the food chain and posing potential health threats. This study aims to investigate the pollution levels and potential ecological risks of HMs in farmland soils in central [...] Read more.
Heavy metals (HMs) in agricultural land have caused serious environmental problems, resulting in severe contamination of the food chain and posing potential health threats. This study aims to investigate the pollution levels and potential ecological risks of HMs in farmland soils in central China, taking into account atmospheric deposition. Several indices were used to assess the status of HMs and compare surface soil with deeper soil. Descriptive statistics, Pearson correlation, and UMAP clustering methods were utilized to identify the characteristics of HMs. Additionally, stepwise linear regression models were employed to quantify the contributions of different variables to the potential ecological risks of HMs. The results showed that the average content of Zn in surface soil (289.41 ± 87.72 mg/kg) was higher than in the deeper soil (207.62 ± 37.81 mg/kg), and similar differences were observed in the mean values of related Igeo (1.622 ± 0.453 in surface soil and 1.183 ± 0.259 in deeper soil) and PEI (0.965 ± 0.292 in surface soil and 0.692 ± 0.126 in deeper soil) indices. This indicates that surface soil is more heavily polluted. The UMAP results confirmed the high variability of HMs in the surface soil, while PCA results suggested the importance of pollution and ecological risk indices. The stepwise linear model revealed that different variable structures contribute differently to the risk. In conclusion, Cr and Zn were found to be the major contaminants in the local farmland soil, with higher concentrations in the surface soil. The geoaccumulation and total potential ecological risk were classified as low risk. High variability of HMs was observed in the surface soil. Therefore, HM-related pollution indices and ecological risk indices are important for assessing the contamination status of local HMs. The local potential ecological risk can be attributed to specific heavy metals, each of which can have different effects on the local ecological risk. Full article
(This article belongs to the Special Issue Characterization and Risk Assessment of Heavy Metals in Dust)
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