Special Issue "Environmental Chemical: Pollution, Analysis and Restoration"

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

Deadline for manuscript submissions: 31 December 2021.

Special Issue Editor

Prof. Dr. Maris Klavins
E-Mail Website
Guest Editor
Head of Environmental Science Department, Faculty of Geographical and Earth Sciences, University of Latvia, Raina bulv. 19, LV 1586 Riga, Latvia
Interests: environmental pollution analysis methods; emerging pollutants, remediation of contaminated environment, element speciation, toxicology of environmental pollution
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Special Issue Information

Dear Colleagues,

Environmental pollution is one of major types of pollution in contemporary society, since it includes the emission of chemical substances into the environment in amounts exceeding the self-purification capacity of the environment, which has an adverse impact on human health and ecosystems. The environmental pollution concept can be related to substances emitted in thousands of tons (for example, oil products, CO2) as well as in gram quantities (for example nanomaterials, dioxins, and pharmaceuticals appearing in waste streams). The adverse impacts of some pollutants have been known since antiquity, for example those of arsenic or mercury, however, the adverse impacts of others have only been recognized in recent years—so-called emerging pollutants. Studies considering the significance of environmental chemicals or related to all aspects of the origin or future of pollutants in the environment and dedicated to revealing their impacts on humans and ecosystems will be welcome. The activities necessary to restore environmental quality in the case of environmental pollution, including the development of remediation technologies resulting in case studies and demonstrating the efficiency of elaborated approaches will be another major focus of this Special Issue.

Prof. Dr. Maris Klavins
Guest Editor

Manuscript Submission Information

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Keywords

  • environmental pollution
  • emerging pollutants
  • nanomaterials
  • microplastics
  • heavy metals
  • oil products
  • remediation
  • pollution with pharmaceuticals

Published Papers (3 papers)

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Research

Article
Fast UHPLC-MS/MS for the Simultaneous Determination of Azithromycin, Erythromycin, Fluoxetine and Sotalol in Surface Water Samples
Appl. Sci. 2021, 11(18), 8316; https://0-doi-org.brum.beds.ac.uk/10.3390/app11188316 - 08 Sep 2021
Viewed by 330
Abstract
Chromatographic development for the determination of pharmaceuticals in environmental water samples is particularly challenging when the analytes have significantly different physico-chemical properties (solubility, polarity, pKa) often requiring multiple chromatographic methods for each active component. This paper presents a method for the simultaneous determination [...] Read more.
Chromatographic development for the determination of pharmaceuticals in environmental water samples is particularly challenging when the analytes have significantly different physico-chemical properties (solubility, polarity, pKa) often requiring multiple chromatographic methods for each active component. This paper presents a method for the simultaneous determination of azithromycin, erythromycin (antibiotics), fluoxetine (anti-depressant) and sotalol (b-blocker) in surface waters by ultra-high-performance liquid chromatography coupled with ultra-high-resolution time-of-flight mass spectrometry. These pharmaceuticals—presenting a broad spectrum of polarity (0.24 ≤ log Kow ≤ 4.05)—were separated on a C-18 analytical column, after a simple filtration step for freshwater samples or after a liquid–liquid extraction with Methyl-tertio-butyl ether (MTBE) for seawater samples. The optimized separation method (in terms of nature of column and eluent, elution gradient, and of mass spectrometric parameters), enable one to reach limits of detection ranging between 2 and 7 ng L−1 and limits of quantification between 7 and 23 ng L−1 for the four targeted molecules, within a three minute run. This method was validated using samples collected from three different surface waters in Lebanon (freshwater and seawater) and analytical results were compared with those obtained in surface waters sampled in a French river, equivalent in terms of human activities. Using this method, we report the highest concentration of pharmaceuticals found in surface water (up to 377 ng L−1 and 268 ng L−1, respectively, for azithromycin and erythromycin, in the Litani river, Lebanon). Full article
(This article belongs to the Special Issue Environmental Chemical: Pollution, Analysis and Restoration)
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Article
Statistical Evaluation of Quantities Measured in the Detection of Soil Air Pollution of the Environmental Burden
Appl. Sci. 2021, 11(7), 3294; https://0-doi-org.brum.beds.ac.uk/10.3390/app11073294 - 06 Apr 2021
Cited by 1 | Viewed by 572
Abstract
The article highlights the investigation of the relationships between measured quantities during the atmospheric geochemical survey of contaminated soil and the environmental burden of the industrial establishment in eastern Slovakia. Statistical data processing was undertaken from the measured values of pollutants. The basic [...] Read more.
The article highlights the investigation of the relationships between measured quantities during the atmospheric geochemical survey of contaminated soil and the environmental burden of the industrial establishment in eastern Slovakia. Statistical data processing was undertaken from the measured values of pollutants. The basic statistical characteristics of the monitored indicators were defined here. With the help of regressive and correlative analysis, dependency was confirmed between examined values, further expressed by a mathematical relationship. We analysed variability of the measured variables due to the influence of changed input quantities by the non-parametric Wilcox test. The statistical data processing helps us to identify the dependency between the measured values and improves valorization of the pollution of a given environmental burden. This was due to the handling of organic pollutants and the production of basic organic and inorganic chemicals stated for other industries. Chemical analysis of soil air helps us to determine the extent and amount of soil contamination by pollutants. Individual pollutants have their own characteristic properties and their negative effects on biota, the environment and humans are different. Full article
(This article belongs to the Special Issue Environmental Chemical: Pollution, Analysis and Restoration)
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Article
Immobilised Humic Substances as Low-Cost Sorbents for Emerging Contaminants
Appl. Sci. 2021, 11(7), 3021; https://0-doi-org.brum.beds.ac.uk/10.3390/app11073021 - 28 Mar 2021
Cited by 1 | Viewed by 482
Abstract
Environmental pollution with contaminants of emerging concern (CECs) is a worldwide problem that is receiving increasing attention. Although these substances have been released in the aquatic environment for a long time, wastewater treatment plants are still incapable of removing emerging contaminants completely. Consequently, [...] Read more.
Environmental pollution with contaminants of emerging concern (CECs) is a worldwide problem that is receiving increasing attention. Although these substances have been released in the aquatic environment for a long time, wastewater treatment plants are still incapable of removing emerging contaminants completely. Consequently, trace metals, metalloids and pharmaceuticals, as well as surfactant leftovers, are often found in environmental samples. Environmentally friendly and cost-effective sorbents such as humic substances can be used for purification if their sorption properties are increased by immobilization. To our knowledge, immobilized humic substances have not been widely studied as sorbents up to now. In this study, humic substances were immobilized to obtain low-cost sorbents. The chosen methods for characterization of the obtained sorbents showed successful immobilization. Traditional pollutants, such as Cr(III) (a metal), As(V) (a metalloid) and chlorpromazine (a pharmaceutical), were used as representative contaminants. Sorption experiments were conducted using the batch system, and sorption was also studied based on the sorbent dosage, initial concentration of the studied element or substance, solution pH and sorption time. The results show that all the obtained immobilized humic substances in this study can be used as sorbents to remove contaminants from water. At the same time, from these humic substances, only those immobilized using iron compounds are suitable for the removal of arsenic. Full article
(This article belongs to the Special Issue Environmental Chemical: Pollution, Analysis and Restoration)
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