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Molecules
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Determination of Trace Elements by Optical Emission Spectrometry
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Determination of Trace Elements by Optical Emission Spectrometry

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

Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 3211

Special Issue Editors

Dr. Piotr Jamroz

E-Mail Website
Guest Editor
Faculty of Chemistry, Division of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, Department of Chemistry, Wroclaw, Poland
Interests: cold atmospheric pressure plasmas (CAPPs); analytical chemistry; nanotechnology; plasma medicine; plasma spectroscopy; analytical atomic spectrometry; microplasmas; materials engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Krzysztof Gręda

E-Mail Website
Guest Editor
Division of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland
Interests: microplasmas; glow discharges; miniaturized excitation sources; determination of heavy metals; trace analysis

Special Issue Information

Dear Colleagues,

No one needs to be convinced of the necessity of monitoring for environmental contamination with heavy metals, food/drug quality control, and trace analysis of many other types of samples. One of the most commonly used methods for these purposes is optical emission spectrometry (OES), and it is hard to overestimate its role in the determination of trace elements. An excitation source that holds a dominant position in OES is inductively coupled plasma (ICP); however, many alternative emission sources have been developed over the last two decades. This Special Issue aims to present the latest developments in the field of trace analysis by optical emission spectrometry. I would like to invite researchers dealing with uncommercial excitation sources as well as with the innovative application of commercially available instruments.

Dr. Piotr Jamroz
Dr. Krzysztof Gręda
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. 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 2700 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

  • innovative excitation sources
  • microplasma emission sources
  • liquid electrode plasmas
  • inductively coupled plasma
  • sample analysis
  • environment monitoring

Published Papers (1 paper)

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Research

22 pages, 4532 KiB  
Article
Simultaneous Determination of As, Bi, Sb, Se, Te, Hg, Pb and Sn by Small-Sized Electrothermal Vaporization Capacitively Coupled Plasma Microtorch Optical Emission Spectrometry Using Direct Liquid Microsampling
by Simion Bogdan Angyus, Erika Levei, Dorin Petreus, Radu Etz, Eniko Covaci, Oana Teodora Moldovan, Michaela Ponta, Eugen Darvasi and Tiberiu Frentiu
Molecules 2021, 26(9), 2642; https://doi.org/10.3390/molecules26092642 - 30 Apr 2021
Cited by 6 | Viewed by 2600
Abstract
The simultaneous determination of chemical vapor-generating elements involving derivatization is difficult even by inductively coupled plasma optical emission spectrometry or mass spectrometry. This study proposes a new direct liquid microsampling method for the simultaneous determination of As, Bi, Se, Te, Hg, Pb, and [...] Read more.
The simultaneous determination of chemical vapor-generating elements involving derivatization is difficult even by inductively coupled plasma optical emission spectrometry or mass spectrometry. This study proposes a new direct liquid microsampling method for the simultaneous determination of As, Bi, Se, Te, Hg, Pb, and Sn, using a fully miniaturized set-up based on electrothermal vaporization capacitively coupled plasma microtorch optical emission spectrometry. The method is cost-effective, free from non-spectral interference, and easy to run by avoiding derivatization. The method involves the vaporization of analytes from the 10 µL sample and recording of episodic spectra generated in low-power (15 W) and low-Ar consumption (150 mL min−1) plasma microtorch interfaced with low-resolution microspectrometers. Selective vaporization at 1300 °C ensured the avoidance of non-spectral effects and allowed the use of external calibration. Several spectral lines for each element even in the range 180–210 nm could be selected. Generally, this spectral range is examined with large-scale instrumentation. Even in the absence of derivatization, the obtained detection limits were low (0.02–0.75 mg kg−1) and allowed analysis of environmental samples, such as cave and river sediments. The recovery was in the range of 86–116%, and the accuracy was better than 10%. The method is of general interest and could be implemented on any miniaturized or classical laboratory spectrometric instrumentation. Full article
(This article belongs to the Special Issue Determination of Trace Elements by Optical Emission Spectrometry)
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