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Assessment of Contaminants of Emerging Concern in the Environment: Occurrence, Detection, Removal and Toxicity

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: 30 December 2024 | Viewed by 782

Special Issue Editors


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Guest Editor
Hephaestus Laboratory, Department of Chemistry, School of Science, Democritus University of Thrace, Kavala University Campus, St Lucas, 65404 Kavala, Greece
Interests: high-resolution mass spectrometry; contaminants of emerging concern; toxicity assessment

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Guest Editor
Department of Chemistry, International Hellenic University, Kavala, Greece
Interests: Inflammation; chronic disorders; anti-inflammatory; pharmaceuticals; cosmetics; natural bioactives; bioassays; toxicity; antitoxicity; valorization of agri-food by-products; emerging contaminants; quality of urban and semi-urban rivers’ and/or lakes’ and/or surface and/or sea waters; freshwater and marine organisms; fish; marine fungi; microalgae; macroalgae; seaweeds; plants; Lemnea
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Special Issue Information

Dear Colleagues,

The term “contaminants of emerging concern” definitely incorporates categories of a sheer number of compounds, such as the overwhelming group of pharmaceutical and personal care products, drugs of abuse, perfluorinated compounds, organophosphate flame retardants, etc., all of which are consumed exponentially throughout the years and many of them have been monitored as a complex multiphase mixture in aquatic environments worldwide. The fact that many contaminants are not removed completely in wastewater treatment plants and are introduced in receiving water is a remaining global challenge. After their release to the environment, their concentrations do not remain unaffected; thus, the effluent wastewater is considered their major contributor in aquatic compartments which can engender possible detrimental effects to non-target organisms.

This Special Issue aims to promote research in six major areas based on the above. Emphasis will be given to research with the most up-to dated sample pretreatment techniques. Special attention will be given to studies with state-of-the-art validated multi-residue methods. The third objective concerns the suspect and non-target screening through high-resolution mass spectrometry. Determining the target compounds, their transformation products, and their removal efficiency will further enhance the general picture. Finally, studies with toxicity assessment via in silico, in vitro, and in vivo bioassays are also welcome.

All contributions to this Special Issue will improve our knowledge in these fields.

Dr. Anna Ofrydopoulou
Dr. Alexandros Tsoupras
Guest Editors

Manuscript Submission Information

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Keywords

  • contaminants of emerging concern
  • high-resolution mass spectrometry
  • toxicity assessment
  • removal
  • non-target screening
  • occurrence
  • sample pretreatment

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Published Papers (1 paper)

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Research

15 pages, 911 KiB  
Article
An Efficient LC–HRMS-Based Approach to Evaluate Pesticide Contamination in Water Bodies with Measurement Uncertainty Considerations
by Christina Nannou, Dimitrios Gkountouras, Vasiliki Boti and Triantafyllos Albanis
Appl. Sci. 2024, 14(22), 10329; https://doi.org/10.3390/app142210329 - 10 Nov 2024
Viewed by 517
Abstract
Over recent decades, the global occurrence of pesticide residues in aquatic environments has been a pivotal issue; however, their trace-level concentrations necessitate the establishment of ultra-sensitive and reliable analytical approaches. To this end, the present study describes the optimization and validation of an [...] Read more.
Over recent decades, the global occurrence of pesticide residues in aquatic environments has been a pivotal issue; however, their trace-level concentrations necessitate the establishment of ultra-sensitive and reliable analytical approaches. To this end, the present study describes the optimization and validation of an LC-HRMS-based method for the accurate determination of 18 pesticides in river and sea water, accompanied by a measurement uncertainty estimation. This method was applied to analyze 17 real samples from agriculture and aquaculture-impacted areas in Greece and Albania. Different solid-phase extraction (SPE) protocols were tested. For the analysis, cutting-edge Orbitrap MS technology and MS/MS fragmentation, along with the use of matrix-matched calibration curves, provided unprecedented accuracy (<5 ppm) and sensitivity for the confirmation of positive detections. Regarding method performance, exceptional linearity was obtained; the limits of quantification ranged from 1.7 ng L−1 to 90 ng L−1, recoveries varied from 61% to 96% in river water, while slightly higher recoveries (60–111%) were observed in seawater. In all cases, repeatability and intra-laboratory reproducibility were below 15%. The measurement expanded uncertainty (U′, k = 2) was estimated considering precision and bias. MU% values were lower than 50% in all cases, as recommended in SANTE guidelines and applied to the quantified results. The matrix effect study exhibited negative values (<20%) for all compounds. Application to real samples showed a low pesticide contamination load that should not be underestimated. Full article
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