Special Issue "Analytical Separation Techniques Coupled to Mass Spectrometry for Detection of Some Chemicals and Their Metabolites in Water"

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Quality and Contamination".

Deadline for manuscript submissions: 8 December 2021.

Special Issue Editors

Prof. Dr. Giuliana Bianco
E-Mail Website
Guest Editor
Dipartimento di Scienze, Università degli Studi della Basilicata, Potenza, Italy
Interests: the development of new analytical protocols for the study of biomolecules; modern mass spectrometric (HRMS) techniques; coupled techniques (LC-MS, GC-MS, CE-MS); metabolomics; environmental contaminants; food science; clinical; functional; nutraceutical substances; cultural heritage safeguard
Special Issues and Collections in MDPI journals
Prof. Dr. Laura Scrano
E-Mail Website
Guest Editor
Dipartimento delle Culture Europee e del Mediterraneo, Università degli Studi della Basilicata, Potenza, Italy
Interests: pharmaceuticals from plants and microorganisms; chemistry of natural substances in vegetables and soil; plant secondary metabolites; mass spectrometry
Special Issues and Collections in MDPI journals
Dr. Raffaella Pascale
E-Mail Website
Guest Editor
Environmental chemist-Consultant/Scientist, Via Giovanni XXIII, 120 Potenza, Basilicata, Italy
Interests: analysis of contaminants and their metabolites in different food and environmental matrices; validation of the methods, according to EPA, ICH, ISO, APAT, and EUROCHEM guidelines

Special Issue Information

Dear Colleagues,

Analytical protocols for the analysis of chemicals and their metabolites in water matrices continue to be an active research area closely related to environmental quality and safety. Environmental water contaminants of recent concern are pharmaceuticals, estrogens, and other endocrine-disrupting chemicals. In addition, pesticides, microorganisms, and humic substances (HS), in their function as vehicles for contaminants and as precursors for byproducts in water treatment, traditionally play an important role. In this field, mass spectrometry (MS) and its combination with chromatographic techniques has proved to be highly successful in gaining reliable data about the presence and abundance of contaminants and their metabolites in water matrices. This Special Issue in Water is devoted to manuscripts (research, reviews, short communications) describing methods for qualitative and quantitative analysis of chemicals in all types of environmental water bodies over time and space using mass spectrometry (MS) and tandem MS (MS/MS). We also anticipate an emphasis on the present status of the application of hyphenated techniques (LC-MS, GC-MS, etc.) for the determination of water contaminants, especially transformation products.

Prof. Dr. Giuliana Bianco
Prof. Dr. Laura Scrano
Dr. Raffaella Pascale
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 papers will be 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. Water is an international peer-reviewed open access semimonthly 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 2000 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

  • POPs
  • Drugs
  • Pharmaceuticals
  • LC-MS, GC-MS
  • Mass spectrometry
  • Tandem MS, HRMS, water analysis methods
  • Monitoring
  • Environment
  • Wastewater
  • Contamination
  • Validation

Published Papers (3 papers)

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Research

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Article
TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
Water 2021, 13(12), 1622; https://doi.org/10.3390/w13121622 - 09 Jun 2021
Viewed by 1052
Abstract
2-methylisoborneol (2-MIB) is a common taste and odor compound caused by off-flavor secondary metabolites, which represents one of the greatest challenges for drinking water utilities worldwide. A TiO2-coated activated carbon (TiO2/PAC) has been synthesized using the sol-gel method. A [...] Read more.
2-methylisoborneol (2-MIB) is a common taste and odor compound caused by off-flavor secondary metabolites, which represents one of the greatest challenges for drinking water utilities worldwide. A TiO2-coated activated carbon (TiO2/PAC) has been synthesized using the sol-gel method. A new TiO2/PAC photocatalyst has been successfully employed in photodegradation of 2-MIB under UV light irradiation. In addition, the combined results of XRD, SEM-EDX, FTIR and UV-Vis suggested that the nano-TiO2 had been successfully loaded on the surface of PAC. Experimental results of 2-MIB removal indicated that the adsorption capacities of PAC for 2-MIB were higher than that of TiO2/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO2/PAC and PAC were 97.8% and 65.4%, respectively, under UV light irradiation. Moreover, it was shown that the presence of NOMs had a distinct effect on the removal of MIB by TiO2/PAC and PAC. In addition, a simplified equivalent background compound (SEBC) model could not only be used to describe the competitive adsorption of MIB and NOM, but also represent the photocatalytic process. In comparison to other related studies, there are a few novel composite photocatalysts that could efficiently and rapidly remove MIB by the combination of adsorption and photocatalysis. Full article
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Article
Determination of Volatile Fuel Oxygenates in Water by Gas Chromatography–Triple Quadrupole Mass Spectrometry: Effect of Automated Sample Preparation Techniques
Water 2020, 12(8), 2266; https://doi.org/10.3390/w12082266 - 12 Aug 2020
Cited by 1 | Viewed by 1054
Abstract
Considering the adverse effects of gasoline additives and aromatic compounds on the quality of the water supply and the ecological environment of the water, a methodology, with short chromatographic separation time (22.5 min) and high separation quality, was optimized for the determination of [...] Read more.
Considering the adverse effects of gasoline additives and aromatic compounds on the quality of the water supply and the ecological environment of the water, a methodology, with short chromatographic separation time (22.5 min) and high separation quality, was optimized for the determination of 11 common gasoline additives and aromatic compounds using gas chromatograph coupled with triple quadrupole mass spectrometer (GC–QqQ–MS/MS) system. The extraction procedure of analytes was performed by headspace solid–phase microextraction (HS–SPME) and purge and trap (P&T), respectively. Both of the two extraction methods provided excellent chromatographic resolution in subsequently GC–QqQ–MS/MS detection system, with the coefficients of linear regression of the calibration curves with HS–SPME and P&T pretreatments were 0.9965~0.9998 and 0.9961~0.9999, respectively, n = 7. The limit of detections (LODs) of these selected oxygenate compounds were discovered to be 0.52~32 ng/L in the P&T–GC–QqQ–MS/MS detection system and 0.11~151 ng/L in the HS–SPME–GC–QqQ–MS/MS detection system. For benzene, toluene, ethylbenzene and xylene isomers (BTEX), the HS–SPME–GC–QqQ–MS/MS system provided outstanding detection performance because of the lower LOD obtained. However, for other selected compounds, the P&T–GC–QqQ–MS/MS system offered lower LODs. The proposed extraction–detection procedure is a simple and sensitive analytical approach for the detection of gasoline additives and aromatic compounds in water. Full article
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Review

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Review
Phosphodiesterase-5 (PDE-5) Inhibitors as Emergent Environmental Contaminants: Advanced Remediation and Analytical Methods
Water 2021, 13(20), 2859; https://doi.org/10.3390/w13202859 - 13 Oct 2021
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Abstract
Pharmaceuticals, fundamental in therapy and the prevention of known pathologies, are responsible for environmental pollution. These substances, called “emerging contaminants,” are harmful to human health because they enter the environment in quantities exceeding the natural self-capacity purification of the ecosystems. Furthermore, wastewater treatment [...] Read more.
Pharmaceuticals, fundamental in therapy and the prevention of known pathologies, are responsible for environmental pollution. These substances, called “emerging contaminants,” are harmful to human health because they enter the environment in quantities exceeding the natural self-capacity purification of the ecosystems. Furthermore, wastewater treatment plants (WWTPs) cannot remove these substances, which can undergo chemical/biological transformations in the environment, thus forming by-products, sometimes more toxic than the parent molecules; successively, they move into rivers and could reach the drinking water supplies. All these phenomena represent a severe public health problem. Therefore, the Water Framework Directive by European Union imposed the monitoring of drugs’ levels in aqueous matrices. Every two years, the EU carefully updates the list of potential water pollutants, called the Watch List, including pharmaceuticals, to evaluate their risk on the aquatic environment. The last Commission Implementing Decision (EU 2018/840) comprises several substances of primary concern. In addition, the scientific community is giving particular attention to other pharmaceuticals not yet on the Watch list, whose markets are in growth; particularly, the Phosphodiesterase 5 (PDE-5) inhibitors used for the pharmaceutical treatment of erectile dysfunction (ED) in men. This review discusses the presence of PDE-5 inhibitors in environmental systems, their toxic effects, the different kinds of removal, and the analytical methods normally adopted for their detection. In addition, the study helps figure out the best possible strategy to tackle pharmaceutical pollution by using analytical and advanced diagnostic methods. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: The Analytical Chemistry Response to the Glyphosate Emergence: Advance and Findings in the Determination through Chromatography-Mass Spectrometry
Authors: Sara Bogialli
Affiliation: Department of Chemical Sciences, UNIPD, University of Padova, Padova, Italy

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