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Ecological Risk Assessment of Pollutants in Aquatic Environments
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Ecological Risk Assessment of Pollutants in Aquatic Environments

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Chemoenvironment".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 3555

Special Issue Editor

Dr. Xiaona Li

E-Mail Website
Guest Editor
Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
Interests: environmental pollution; environmental management; environmental science and technology

Special Issue Information

Dear Colleagues,

Controlling the ecological risks in the water environment remains  a grim situation. To prevent the occurrence of major water environmental pollution events, it is crucial to objectively and accurately assess the potential adverse effects of pollutants on water ecosystems. The main emphasis of this Special Issue is on the dissemination of cutting-edge research findings on this topic from science. 

The purpose of VSI is to publish state-of-the-art outcomes that gather current knowledge and answer pressing questions pertaining to the ecological risk assessment of pollutants in aquatic environments. The topics of VSI include, but are not limited to, the following: 

  1. The occurrence and distribution of pollutants in typical waters (water that does not contain drinking water).
  2. Advanced detection methods of emerging contaminants, in particular, in aquatic environments.
  3. Environmental behaviors of contaminants, such as their adsorption, transformation, transportation and degradation in aquatic environments.
  4. Advanced assessment and remediation technologies of pollutants in aquatic environments.
  5. Toxicity and the associated toxic mechanisms of pollutants to aquatic organisms, the transmission of pollutants among food chains, and the human health risks of pollutants in aquatic environments.
  6. Ecological risk assessment modeling of pollutants in aquatic environments.
  7. Proposal of ecological risk assessment criteria for types of pollutants in aquatic environments.

Dr. Xiaona Li
Guest Editor

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. International Journal of Environmental Research and Public Health 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 2500 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

  • aquatic environment
  • criteria
  • detection methods
  • environmental behaviors
  • human health
  • occurrence
  • pollutants
  • remediation
  • risk assessment
  • toxicity

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Published Papers (2 papers)

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12 pages, 2511 KiB  
Article
Toxicity Assessment of Octachlorostyrene in Human Liver Carcinoma (HepG2) Cells
by Guofa Ren, Kangming Wu, Jing An, Yu Shang, Kewen Zheng and Zhiqiang Yu
Int. J. Environ. Res. Public Health 2022, 19(21), 14272; https://doi.org/10.3390/ijerph192114272 - 1 Nov 2022
Viewed by 1524
Abstract
Octachlorostyrene (OCS) is a ubiquitous persistent organic pollutant; however, information regarding the toxicological effects of OCS remains limited. In this study, we studied the toxicity mechanisms of OCS using human liver carcinoma (HepG2) cells. The results showed that OCS reduced cell viability in [...] Read more.
Octachlorostyrene (OCS) is a ubiquitous persistent organic pollutant; however, information regarding the toxicological effects of OCS remains limited. In this study, we studied the toxicity mechanisms of OCS using human liver carcinoma (HepG2) cells. The results showed that OCS reduced cell viability in a time- and dose-dependent manner. Compared with that in the control, the level of reactive oxygen species (ROS) was significantly increased in all treated HepG2 cells. We also found that (1) OCS induced damage in the HepG2 cells via the apoptotic signaling pathway, (2) OCS increased intracellular free Ca2+ concentration (>180%), and (3) following exposure to 80 μM OCS, there was an increase in mitochondrial transmembrane potential (MMP, ~174%), as well as a decrease in ATP levels (<78%). In conclusion, OCS is cytotoxic and can induce apoptosis, in which ROS and mitochondrial dysfunction play important roles; however, the observed increase in MMP appears to indicate that HepG2 is resistant to the toxicity induced by OCS. Full article
(This article belongs to the Special Issue Ecological Risk Assessment of Pollutants in Aquatic Environments)
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13 pages, 2651 KiB  
Article
Humic Acids Affect the Detection of Metal Ions by Cyanobacteria Carbon Quantum Dots Differently
by Simin Liu, Yishen Shi, Xiaona Li and Zhenyu Wang
Int. J. Environ. Res. Public Health 2022, 19(16), 10225; https://doi.org/10.3390/ijerph191610225 - 17 Aug 2022
Cited by 2 | Viewed by 1584
Abstract
A “top-down” synthesis of carbon quantum dots (CQDs), novel fluorescent C materials from waste biomass, is both cost-effective and environmentally friendly. N-rich cyanobacteria are promising precursors to produce CQDs with high fluorescence (FL) intensity for the detection of metal ions. Herein, we synthesized [...] Read more.
A “top-down” synthesis of carbon quantum dots (CQDs), novel fluorescent C materials from waste biomass, is both cost-effective and environmentally friendly. N-rich cyanobacteria are promising precursors to produce CQDs with high fluorescence (FL) intensity for the detection of metal ions. Herein, we synthesized cyanobacteria-based CQDs using a hydrothermal process and evidenced their high FL intensity and stability. The cyanobacteria-based CQDs showed powerful sensitivity for the specific detection of Fe3+ and Cr6+, which could be ascribed to (i) static FL quenching as a result of the interaction between –OH, –NH2, and –COOH groups with the metal ions, (ii) internal filtering effects between the CQDs and Fe3+ or Cr6+, and (iii) fluorescence resonance energy transfer between CQDs and Cr6+. Humic acids (HAs) coexisting led to an underestimation of Fe3+ but an overestimation of Cr6+ by the CQDs due to the different FL quenching mechanisms of the CQDs. HAs sorbed Fe3+ and wrapped the CQDs to form a barrier between them, inhibiting FL quenching of CQDs by Fe3+. As for Cr6+, HAs reduced Cr6+ and also led to FL quenching; the sorbed HAs on the CQDs acted as a carrier of electrons between Cr6+ and the CQDs, enhancing FL quenching of the CQDs. This study is the first work to evidence the interference of HAs in the detection of metal ions by CQDs derived from cyanobacteria, which would enlighten the application of CQDs in a natural aqueous environment. Full article
(This article belongs to the Special Issue Ecological Risk Assessment of Pollutants in Aquatic Environments)
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