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Pollutants
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Marine Pollutants - Volume 2
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Marine Pollutants - Volume 2

A special issue of Pollutants (ISSN 2673-4672). This special issue belongs to the section "Water Pollution".

Deadline for manuscript submissions: closed (15 January 2023) | Viewed by 1745

Special Issue Editors

Dr. Francesco Saliu

E-Mail Website
Guest Editor
Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, 120126 Milan, Italy
Interests: marine pollution; food chemistry; food contaminants; environmental analyses; analytical methods
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Paolo Galli

E-Mail Website
Guest Editor
Department of Earth and Environmental Sciences (DISAT), University of Milan – Bicocca, Piazza della Scienza, 20126 Milan, Italy
Interests: marine ecology; parasite ecology; polypropylenes

Special Issue Information

Dear Colleagues,

This Special Issue, entitled “marine pollutants”, aims to provide an up-to-date and comprehensive view of the hazardous substances, materials, and processes that can pose a risk to marine ecosystems and negatively affect the health and the economy of the communities living the coastal areas (i.e., fishing and tourism industry). All the types of marine pollution will be considered: from planetary scale issues, such as oceans acidification, warming, and eutrophication, to local-scale impact, such as oil spills, chemical and biological contamination, and underwater noise. Papers dealing with plastic and microplastic in the marine environment are also welcomed. The covered topics will span all the aspect of marine pollution, including occurrence, fate, and bio-ecological effects of the marine pollutants; impacts on fishing and aquaculture, analytical methods and monitoring techniques; mitigation and remediation strategies; green technologies and blue economy, law and policies. The target audience includes the whole science community, industry, conservation groups, concerned citizens and policy makers devoted to implement effective pollution control strategies. We would like to encourage you to submit to this Special Issue your original research papers, short communication of preliminary results, review articles, or commentaries to stimulate the discussion.

Dr. Francesco Saliu
Prof. Dr. Paolo Galli
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. Pollutants is an international peer-reviewed open access quarterly 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 1000 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

  • marine pollution
  • marine debris
  • organic pollutants
  • microplastic
  • ocean warming
  • ocean acidification
  • biological contamination

Published Papers (1 paper)

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11 pages, 1803 KiB  
Brief Report
Effects of Ammonia on Juvenile Sunray Surf Clam (Mactra chinensis Philippi) in Laboratory Tests
by Yuanyuan Dai, Yubo Dong, Feng Yang, Zhongzhi Chen and Jia Jia
Pollutants 2023, 3(2), 232-242; https://0-doi-org.brum.beds.ac.uk/10.3390/pollutants3020017 - 14 Apr 2023
Cited by 1 | Viewed by 1358
Abstract
The current study aimed to determine the acute and sub-chronic toxicity of ammonia to juvenile surf clams (Mactra chinensis Philippi). Acute toxicity tests were conducted with seven concentrations of ammonium chloride using a 96 h static-renewal approach. Sub-chronic ammonia exposure tests (20 [...] Read more.
The current study aimed to determine the acute and sub-chronic toxicity of ammonia to juvenile surf clams (Mactra chinensis Philippi). Acute toxicity tests were conducted with seven concentrations of ammonium chloride using a 96 h static-renewal approach. Sub-chronic ammonia exposure tests (20 d exposures) were conducted with 6 concentrations at 20 °C. The 96 h median lethal concentration (96 h LC50) was 11.1 (10.0; 12.0) mg/L total ammonia nitrogen (TAN) and 0.56 (0.50; 0.60) mg/L unionized ammonia (NH3). The relative growth rate was significantly reduced at concentrations higher than 1.6 mg/L TAN (0.075 mg/L NH3) in the 20 d tests. The estimated maximum acceptable toxicant concentration (MATC) based on the reduced growth of juvenile M. chinensis was between 0.8 and1.6 mg/L TAN (0.038–0.075 mg/L NH3). Histopathological changes were evaluated in the surviving clams after 20 days of exposure. Exposure to 14.1 mg/L TAN (0.661 mg/L NH3) resulted in changes in the mantle, foot and digestive diverticulum. We also examined the antioxidant enzyme activities of superoxide dismutase (SOD) and catalase (CAT) in 10 d and 20 d at 6 different levels (plus a control) of ammonia from 0.8 mg/L to 14.1 mg/L TAN. Ammonia exposure at 0.8 mg/L TAN (0.038 mg/L NH3) significantly affected SOD and CAT activities. The level of enzymic activity decreased with the increasing concentration of TAN. The results improved our understanding of oxidative damage under ammonia exposure and provided data for the aquaculture of sunray surf clams. Full article
(This article belongs to the Special Issue Marine Pollutants - Volume 2)
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