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Processes
Special Issues
Novel Technologies in Trace Elements Determination
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Novel Technologies in Trace Elements Determination

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 7278

Special Issue Editors

Assist. Prof. Mariusz Slachcinski

E-Mail Website
Guest Editor
Faculty of Chemical Technology, Department of General and Analytical Chemistry, Poznan University of Technology, 60-965 Poznan, Poland
Interests: chemical analysis; analytical atomic spectrometry;atomic absorption spectrometry; optical emission spectrometry; mass spectrometry; design and adaptation of modern hyphenated techniques based on sample introduction capillary electrophoresis; miniaturized systems (chip-based); laser ablation; electrothermal evaporation
Prof. Dr. Przemyslaw Niedzielski

E-Mail Website
Guest Editor
Faculty of Chemistry, Adam Mickiewicz University in Poznań, Poznan, Poland
Interests: speciation analysis; hyphenated techniques; environmental studies; food analysis; archaeometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Analytical chemistry has nowadays indisputable importance in many scientific research areas. The aims of analytical chemistry are to design sensitive, selective, and specific determination strategies and new methodologies and develop modern detection devices and instruments. In this sense, it provides huge support for the development of medicine, life science, material science, and environmental science.

The apparatus used in chemical analysis are constantly being improved to broaden their applicability (e.g., advanced hyphenated techniques), allowing the determination of ultra-trace components (lower detection and quantification limits) with greater accuracy and precision. Scientific discoveries and technical progress are the basis for the development of analytical chemistry and many other disciplines requiring qualitative and quantitative information to describe an object of interest. The introduction of new analytical instruments is prompted by the demands of everyday life and of the industry.

This Special Issue on “Novel Technologies in Trace Elements Determination” aims to gather outstanding research studies for a comprehensive coverage of all aspects related to the development of innovative analytical techniques and methodologies, including sample preparation, atomic absorption spectroscopy (AAS), inductively coupled and microwave-induced plasmas optical emission spectrometry (ICP/MIP OES), and mass spectrometry (MS), also in combination with chemical/photochemical vapor generation (CVG/PVG), electrothermal vaporization (ETV), and laser ablation instrumentation (LA). Studies on the application of chromatographic techniques (gas chromatography (GC) and high-performance liquid chromatography (HPLC)) and the design and development of miniaturized devices will also be welcome. Topics of interest include, but not are limited to:

  • modern sample preparation techniques for trace analysis;
  • modern sample introduction systems;
  • hyphenated techniques in atomic absorption, optical emission, and mass spectrometry;
  • gas chromatography and high-performance liquid chromatography in hyphenated systems;
  • macro/micro interfaces for hyphenated techniques;
  • the design and development of portable micro-structured analytical instruments.

Assist. Prof. Mariusz Slachcinski
Prof. Przemyslaw Niedzielski
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. Processes is an international peer-reviewed open access monthly 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 2400 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

  • trace/ultratrace analysis
  • sample preparation techniques
  • atomic absorption spectrometry
  • optical emission spectrometry
  • mass spectrometry
  • gas chromatography
  • high-performance liquid chromatography

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Published Papers (3 papers)

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Research

16 pages, 1386 KiB  
Article
Vertical Distributions and Bioavailabilities of Heavy Metals in Soil in An-Tea Plantations in Qimen County, China
by Jingcheng Xu, Siqiang Wang, Ting Yao, Xinsong She and Zhuoting Gan
Processes 2022, 10(4), 664; https://doi.org/10.3390/pr10040664 - 29 Mar 2022
Cited by 9 | Viewed by 1991
Abstract
Heavy metals mainly enter tea from the soil. In this study, stratified soil samples were collected, at a depth of 0–60 cm, using a soil drill in An-tea plantations. Speciation of As, Cd, Cr, Cu, Ni, Pb, and Zn was determined using the [...] Read more.
Heavy metals mainly enter tea from the soil. In this study, stratified soil samples were collected, at a depth of 0–60 cm, using a soil drill in An-tea plantations. Speciation of As, Cd, Cr, Cu, Ni, Pb, and Zn was determined using the European Community Bureau of Reference sequential extraction method, and the heavy metal concentrations in the extracts were determined by inductively coupled plasma−mass spectrometry. Compared with other soil layers, the mean Cd, Cu, Pb, and Zn concentrations were highest in the 0–20 cm layer, the Ni concentrations were highest in the 20–40 cm layer, and the As and Cr concentrations were highest in the 40–60 cm layer. The mean contributions of the non-residual fractions, including the acid-soluble, reducible, and oxidizable fractions, to the total concentrations were higher than those of the residual fraction for Cr, Cu, and Ni at all depths in soil from a flat area, as well as for Cd and Zn at all depths in soil from a sloping area. The contributions of non-residual fractions to the total As and Pb concentrations were higher than those of the residual fraction in soil from a depth of 0–20 cm from the flat area and soil from a depth of 20–60 cm from the sloping area. The total heavy metal concentrations correlated well with the acid-soluble fraction and reducible fraction concentrations in soil from 0–40 cm. Full article
(This article belongs to the Special Issue Novel Technologies in Trace Elements Determination)
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15 pages, 10299 KiB  
Article
Effect of Aging Time on the Composition of the Volatile Components of An–tea
by Ting Yao, Siqiang Wang, Xinsong She, Di Zhou and Zhuoting Gan
Processes 2022, 10(3), 437; https://doi.org/10.3390/pr10030437 - 22 Feb 2022
Cited by 2 | Viewed by 1516
Abstract
To investigate the effects of different aging times, three An–tea samples were selected for comparison with a non-aged sample as the control (CK, one-year-old) and labeled as high-aged (HAS, 12 years old), medium-aged (MAS, 7 years old), and low-aged samples (LAS, 2 years [...] Read more.
To investigate the effects of different aging times, three An–tea samples were selected for comparison with a non-aged sample as the control (CK, one-year-old) and labeled as high-aged (HAS, 12 years old), medium-aged (MAS, 7 years old), and low-aged samples (LAS, 2 years old). Changes in the volatile components of the different An–tea samples were investigated using headspace–solid-phase microextraction (HS-SPME) combined with gas chromatography–mass spectrometry (GC-MS). The volatile components of An–tea consisted of eight types of compounds. Aldehydes and hydrocarbons were dominant in LAS, while esters, ketones, alcohols, nitrogen-containing compounds, and ethers were the most abundant compound in MAS. Esters were dominant in HAS, while phenols were only present in LAS and CK. As aging time increased, the number of identical compounds gradually decreased, while the relative contents of the alcohols also decreased. Except for CK, the contents of ketones and aldehydes gradually decreased as the aging time increased. The content of aldehydes greatly increased during the initial aging period. Ketones and esters had markedly increased in HAS, while their abundance in LAS was close to that in CK. The comprehensive quality score of the volatile components obtained by principal component analysis was highest for MAS, followed by HAS and LAS, with CK having the lowest score. Full article
(This article belongs to the Special Issue Novel Technologies in Trace Elements Determination)
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13 pages, 2388 KiB  
Article
New Analytical Method for Determination of Phthalates in Wastewater by on Line LC-GC-MS Using the TOTAD Interface and Fraction Collector
by Francisco J. Espinosa, Rosa M. Toledano, Juan C. Andini, Jose M. Cortés and Ana M. Vázquez
Processes 2021, 9(6), 920; https://doi.org/10.3390/pr9060920 - 24 May 2021
Cited by 5 | Viewed by 3010
Abstract
There is an increasing demand for automatic, reliable and sensitive analytical methods for determining trace levels of phthalic acid esters (PAEs) in environmental samples. While on line coupled liquid chromatography-gas chromatography (LC-GC) has been proof to be a powerful tool for trace-level analyses [...] Read more.
There is an increasing demand for automatic, reliable and sensitive analytical methods for determining trace levels of phthalic acid esters (PAEs) in environmental samples. While on line coupled liquid chromatography-gas chromatography (LC-GC) has been proof to be a powerful tool for trace-level analyses in complex matrices, the present work presents a new totally automated on line LC-GC method, using the Through Oven Transfer Adsorption Desorption (TOTAD) interface, for the analysis of four of the main phthalates, dibuthyl phthalate (DBP), diethyl phthalate (DEP), dimethyl phthalate (DMP) and diethylhexyl phthalate (DEHP), in a matrix as complex as leachate. The sample is directly injected into the LC injector valve with no sample pretreatment other than simple filtration. The LC step separates the target analytes from matrix interference. Two different LC fractions are collected in a purposely designed fraction collector and then transferred to the TOTAD interface, which concentrates the analytes, totally eliminates the solvent and transfers the analytes to the GC-MS system, where the analysis is carried out. The LOD of the method varied from 0.1 µg/L (DEHP) to 1.4 µg/L (DMP), RSD for retention time below 0.14% and for absolute peak areas below 12% and linearity from 1 µg/L to 1000 µg/L (R2 > 0.99), except in the case of DEHP (linearity from 1 to 250 µg/L, R2 = 0.94). The method was applied to the analysis of the target analytes in samples collected from a municipal solid waste (MSW) landfill in Rosario (Argentina). Full article
(This article belongs to the Special Issue Novel Technologies in Trace Elements Determination)
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