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Special Issue "Trends in Environmental Analytical Chemistry"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: 30 April 2020.

Special Issue Editor

Prof. Piotr Konieczka
E-Mail
Guest Editor
Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Poland
Interests: environmental analysis and monitoring; trace analysis; quality assurance and quality control; chemical metrology; chemical statistics

Special Issue Information

Dear Colleagues,

The main developmental trends in chemical analytics have involved the determination of analytes at ever decreasing detection levels in samples with increasingly complex matrices. This is an extremely difficult and complicated task and, therefore, it poses a great challenge to analytical chemists.

Environmental analytical chemistry is a field of science that draws on experience from many of the sciences (chemistry, biology, physics, and mathematics) to accomplish the primary goal – obtaining reliable information about the investigated objects. Development trends of environmental analytical chemistry can be divided into two basic groups:

  • Methodological – such as speciation analysis, application of the procedures for the simultaneous determination of multiple analytes, use of summary indicators of assessment of the quality of the environment, the use of biosensors, modification and simplification of the sample preparation step, increasing selectivity of analytical procedures, and the application of green analytical techniques
  • Instrumental – use of hyphenated techniques, miniaturization, automation, computerization, using new sensors, biosensors, utilization of on-line, in-line, in-situ measurements, and the application of statistical tools and chemometrics for data treatment.

This Special Issue will cover a wide range of topics related to both of groups of trends in environmental analytical chemistry.

Prof. Piotr Konieczka
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 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. Molecules 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

  • method development
  • method validation
  • bioanalysis
  • hyphenated techniques
  • miniaturization
  • sensors
  • biosensors
  • green analytical chemistry
  • speciation
  • monitoring
      

Published Papers (2 papers)

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Research

Open AccessFeature PaperArticle
Organic Acids and Polyphenols Determination in Polish Wines by Ultrasound-Assisted Solvent Extraction of Porous Membrane-Packed Liquid Samples
Molecules 2019, 24(23), 4376; https://doi.org/10.3390/molecules24234376 - 29 Nov 2019
Cited by 1
Abstract
In the near future, Poland is going to have more and more favorable conditions for viticulture. Organic acids and polyphenols are among the most commonly analyzed compounds due to their beneficial properties for human health and their importance in the winemaking process. In [...] Read more.
In the near future, Poland is going to have more and more favorable conditions for viticulture. Organic acids and polyphenols are among the most commonly analyzed compounds due to their beneficial properties for human health and their importance in the winemaking process. In this work, a new technique involving ultrasound-assisted solvent extraction of porous membrane-packed liquid samples (UASE-PMLS) was for the first time described and applied for real samples. The methodology based on UASE-PMLS for organic acids and polyphenols in wine samples was optimized and validated. Using the new technique coupled to GC–MS, organic acids and polyphenols were evaluated in Polish wine samples. Extraction solvent, extraction temperature, derivatization time and sample pH were optimized. Chemometric tools were used for data treatment. Good linearity was obtained for the concentration ranges evaluated with r values between 0.9852 and 0.9993. All parameters of method validation (intra- and inter-day precision and matrix effect) were over 80% with coefficient of variation (CV) up to 17%. Recovery was between (92.0 ± 8.5)% and (113 ± 16)%. Finally, green assessment was evaluated using Analytical Eco-Scale and Green Analytical Procedure Index (GAPI). The UASE-PMLS is characterized by many advantages, e.g., the extraction process is fast and easy coupled to GC–MS. Regarding other extraction techniques, the amount of used solvent is minimum, and no waste is generated. Therefore, it is an environmentally friendly technique. Full article
(This article belongs to the Special Issue Trends in Environmental Analytical Chemistry)
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Open AccessArticle
Speciation of Chromium in Alkaline Soil Extracts by an Ion-Pair Reversed Phase HPLC-ICP MS Method
Molecules 2019, 24(6), 1172; https://doi.org/10.3390/molecules24061172 - 25 Mar 2019
Cited by 1
Abstract
The aim of this work was to study by a hyphenated HPLC-ICP MS technique the chromium species released during alkaline extraction of various soils collected from a contaminated area of an old tannery. An ultrasound-assisted extraction procedure using 0.1 mol L−1 Na [...] Read more.
The aim of this work was to study by a hyphenated HPLC-ICP MS technique the chromium species released during alkaline extraction of various soils collected from a contaminated area of an old tannery. An ultrasound-assisted extraction procedure using 0.1 mol L−1 Na2CO3 solution was developed for the release of chromium species from the soil. The chromium species in the soil extracts were separated on a C8 column using EDTA and TBAH solution as a mobile phase. The use of an ICP-QQQ MS spectrometer in tandem mass configuration (MS/MS) combined with an octopole reaction system (ORS3) pressurized with helium allows one to eliminate spectral interferences during Cr determination in the soil extracts. The detection limit of the procedure was 0.08 µg L−1 for Cr(III) and 0.09 µg L−1 for Cr(VI) species. The trueness of the IP RP HPLC-ICP MS method was proved by an analysis of CRM 041 and CRM 060. The advantage of the proposed method is the analysis of soil extracts without their preliminary neutralization, which limits the losses of Cr(VI) due to the reduction process. The analysed soils mainly contained chromium in immobile forms (94.6–98.5% of the total Cr content). In all alkaline soil extracts mostly the Cr(VI) form was found, but in the extract of organic soils Cr(III) was also present. This arose from the reduction of Cr(VI) species by organic matter (humic acids) and Fe(II). The amount of formed Cr(III) species was dependent on the type of soil (content of organic matter, Mn and Fe) and its moistness. For the first time, the presence of neutral and non-polar chromium fractions in the soil extracts was also demonstrated. It was found that reliable speciation analysis results could be obtained for mineral soils. Full article
(This article belongs to the Special Issue Trends in Environmental Analytical Chemistry)
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