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Toxics
Special Issues
Metal Oxidative Stress in Polluted Inland Water
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Metal Oxidative Stress in Polluted Inland Water

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Ecotoxicology".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 4002

Special Issue Editor

Dr. Nicoletta Guerrieri

E-Mail Website
Guest Editor
Water Research Institute-National Research Council (IRSA-CNR), Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
Interests: metals and foods; food quality and environment; As and Hg pollution; climate changes and food safety; biomarkers; carotenoids and photosynthetic pigments; environmental biochemistry; proteomic; phytoremediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Aquatic ecosystems are one of the most exposed environments to metal pollution from anthropic and natural sources. Metals are highly persistent in the water and can react with other elements and change their biodisponibility. Metals in water cause oxidative stress; the defense mechanism of the aquatic environment is different and complex among species, and regulated by many physical-chemical parameters, but, often, this process leads to a biodiversity loss. Climate change can worsen already compromised environments. The reactive oxygen species (ROS) production is the first signal of pollution: the defense pathway starts to work, but it is an emergency response and can bring to the death or to a selection to few species metal tolerant.

For this Special Issue, we invite high-quality original research papers, short communications, and review on the oxidative stress of inland water due to metals pollution. Areas of interest may include (but are not limited to): monitoring of aquatics organism in metals polluted waters, climate change and environmental instability, model systems, biomarkers, insight on understanding molecular pathway, the competition and the cooperation among the organisms in metals polluted water, biofilms structure and biological role, new technological skill, molecular biology, transcriptome, proteomics, and FTIR.

Dr. Nicoletta Guerrieri
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. 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

  • metal pollution
  • metal biodisponibility
  • ROS
  • bioindicators
  • transcriptomics
  • polluted water
  • acid mine drainage
  • abiotic stress
  • biofilm
  • bioremediation

Published Papers (2 papers)

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Research

12 pages, 1484 KiB  
Article
Biofilm and Rivers: The Natural Association to Reduce Metals in Waters
by Nicoletta Guerrieri, Laura Fantozzi, Andrea Lami, Simona Musazzi, Martina Austoni, Arianna Orrù, Laura Marziali, Gigliola Borgonovo and Leonardo Scaglioni
Toxics 2022, 10(12), 791; https://doi.org/10.3390/toxics10120791 - 15 Dec 2022
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Abstract
This article focuses on a very peculiar habitat, the thin biofilm that covers the surface of rocks, cobbles, sediment grains, leaf litter, and vegetation on a riverbed. Species composition changes over time and depends on environmental conditions and perturbation of water quality. It [...] Read more.
This article focuses on a very peculiar habitat, the thin biofilm that covers the surface of rocks, cobbles, sediment grains, leaf litter, and vegetation on a riverbed. Species composition changes over time and depends on environmental conditions and perturbation of water quality. It provides several ecosystem services, contributing to the biogeochemical fluxes and reducing contamination by absorbing the pollutants. Biofilm into the Toce River (Ossola Valley, Piedmont, Italy) was investigated to assess its capacity to accumulate the metals and macroions from the water column. In this preliminary work, we investigated three sample points, in two different seasons. The community composition of biofilm was determined via morphological analysis (diatoms and non-diatoms algal community). We characterize the biofilm, a community of different organisms, from different perspectives. In the biofilm, Hg was analyzed with an automated mercury analyzer, other metals and macroions with inductively coupled plasma mass spectrometry (ICP-MS) (Al, As, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Ni, P, Pb, and Zn), and the carotenoid and chlorophyll composition of the photosynthetic organism with HPLC analysis for the primary producers. The results evidence a seasonal pattern in metals and macroions levels in the biofilm, and a significant difference in the biofilm community and in carotenoid composition, suggesting the utility of using the biofilm as an additional bioindicator to monitor the water quality of the river. Full article
(This article belongs to the Special Issue Metal Oxidative Stress in Polluted Inland Water)
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22 pages, 3810 KiB  
Article
Assessment of the Anthropogenic Impact and Distribution of Potentially Toxic and Rare Earth Elements in Lake Sediments from North-Eastern Romania
by Laurentiu Valentin Soroaga, Cornelia Amarandei, Alina Giorgiana Negru, Romeo Iulian Olariu and Cecilia Arsene
Toxics 2022, 10(5), 242; https://doi.org/10.3390/toxics10050242 - 10 May 2022
Cited by 9 | Viewed by 2158
Abstract
Chemical analysis was performed on sediment samples collected in two sampling sessions (July and October) from Podu Iloaiei Dam Lake, one of the most important water resources used for aquaculture in north-eastern Romania. The concentration of 15 trace elements (TEs), 8 refractory elements [...] Read more.
Chemical analysis was performed on sediment samples collected in two sampling sessions (July and October) from Podu Iloaiei Dam Lake, one of the most important water resources used for aquaculture in north-eastern Romania. The concentration of 15 trace elements (TEs), 8 refractory elements (REs), and 15 rare earth elements (REEs)—determined using inductively coupled plasma mass spectrometry—showed variability largely dependent of the sampling points and collection time. Manganese was the most abundant TE, V and Cr were the most abundant REs, while Ce was one of the most abundant REEs. The cerium negative anomaly and Gd positive anomaly were observed in the Chondrite-normalized distributions. In October, the Ce anomaly showed significant negative correlation with Mn, emphasizing the water body oxidation potential. The identified positive Gd anomaly was most likely associated with the use of Gd-chelating agents in magnetic resonance imaging in Iasi, the largest medical hub in north-eastern Romania. Principal component analysis extracted three factors explaining 96.0% of the observed variance, i.e., rock weathering, leaching from soil surface, contributions from urban stormwater and atmospheric deposition (50.9%), pedological contributions (23.7%), and mixed anthropogenic sources (e.g., traffic, waste discharge, agricultural activities; 21.4%). The evaluation of pollution indices highlighted low and moderate degrees of contamination for most of the elements and a considerable degree of contamination for Cd. Assigned Cd sources included fertilizers and pesticides used in the near agricultural areas or the high traffic road located near the lake. Since contamination of aquatic ecosystems with harmful elements is a human health concern, further monitoring of specific vectors in the food chain of the investigated dam lake will be of the utmost importance. Full article
(This article belongs to the Special Issue Metal Oxidative Stress in Polluted Inland Water)
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