Article
Chemistry, Analytical
Wen Zeng, Zenghui Hu, Jin Luo, Xiandeng Hou, Xiaoming Jiang
Summary: The method proposed a highly sensitive determination of trace antimony using cobalt ion enhanced PCVG for sample introduction into AFS or ICP-MS. By optimizing the experimental conditions, including enhancement ions, acid medium, UV irradiation, working gas, and potential interference, the method achieved low detection limits and satisfactory recoveries in the analysis of real water samples.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Eva Jenikova, Eliska Novakova, Jakub Hranicek, Stanislav Musil
Summary: Photochemical vapor generation (PVG) of Te4+ was achieved using a simple reactor and investigated for its application in the determination of Te in water samples. The study explored the composition of the reaction medium, the irradiation time, and the effects of sensitizers and interferents. The results showed that PVG could be used for sensitive determination of Te in water samples under optimized conditions.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Abolghasem Zanganeh, Hamid Reza Ghasempour, Mohammad Kazem Koohi, Nasser Karimi
Summary: A novel functionalized magnetic metal-organic framework (MOF) was synthesized and applied for the extraction and determination of Hg(II) ions in food samples. The new material, modified with 1,3,4-Thiadiazole-2,5-dithiol chelator, exhibited high efficiency in separating and enriching Hg(II) ions. The optimized extraction conditions were determined using experimental design approach, and the elution step was performed using 0.7 mol L-1 HCl solution.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Analytical
Alicia Mollo, Alexandra Sixto, Florencia Cora Jofre, Mariela Piston, Marianela Savio
Summary: A hydride generation nitrogen microwave induced plasma optical emission spectrometry (HG-MIP OES) system was developed for lead determination using specific additives and reductants in acidic medium. The study optimized operating conditions and conducted a detailed investigation of nitrogen plasma response. The method showed comparable performance to other atomic spectrometry techniques in terms of limits of detection and quantification.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Jaromir Vyhnanovsky, Dilek Yildiz, Barbora Stadlerova, Stanislav Musil
Summary: The study achieved photochemical vapor generation of bismuth with optimal conditions determined through investigating the influence of sensitizers and reaction medium flow rate. Combining PVG with atomic fluorescence spectrometry can provide low limits of detection at a low operation cost.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Pamela S. M. Rocha, Andre S. Araujo, Ricardo J. Cassella
Summary: A single-vial methodology for the extraction and determination of mercury(II) in water samples was developed. The method showed good accuracy and interference suppression ability through optimization and evaluation of the method's performance.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Applied
Fernanda Garcia de Almeida, Milena do Prado Ferreira, Mariana Gava Segatelli, Alexandra Beal, Wilma Aparecida Spinosa, Fabio Antonio Suquila Cajamarca, Cesar Ricardo Teixeira Tarley
Summary: A solid phase preconcentration method for cobalt determination at trace levels was developed using a cross-linked polymer as an efficient adsorbent, achieving high sensitivity and recoveries ranging from 91-104% in different samples.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Chemistry, Analytical
Yongchun Liu, Jie Zou, Bin Luo, Hairong Yu, Zhigang Zhao, Hui Xia
Summary: Using natural plant extracts as auxiliary matrix or photocatalysts can enhance the efficiency and sensitivity of photochemical vapor generation atomic fluorescence spectrometry for trace mercury determination, while reducing biological toxicity and secondary pollution. This green and sensitive method provides an experimental basis for expanding the photochemical vapor generation system.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Cagdas Buyukpinar, Nevim San, Okan T. Komesli, Sezgin Bakirdere
Summary: The study used a photochemical vapor generation-atomic absorption spectrometry method for nickel determination, optimizing conditions to maximize analytical signals. Spiking experiments in wastewater samples showed high accuracy and applicability of the developed method for nickel ion determination at different concentrations.
ANALYTICAL LETTERS
(2021)
Article
Spectroscopy
Jarol R. Miranda-Andrades, Marlin J. Pedrozo-Penafiel, Joseane A. Mendes, Ricardo Queiroz Aucelio
Summary: The determination of thiomersal was successfully made by utilizing the temporally selective photo-degradation method mediated by graphene quantum dots and TiO2 nanoparticles. This method allows for the analysis of different mercury species in a short period of time and can be applied to the determination of thiomersal in vaccines.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Ibrahim A. Darwish, Zongzhi Wang, Ryhan J. Darling, Nourah Z. Alzoman
Summary: This study describes the development of two highly sensitive and selective sensor-assisted fluorescence immunoassays for the trace determination of copper ions, Cu(ii) residues, in food samples. Both assays showed satisfactory accuracy and precision, and had significant advantages over conventional atomic spectrometric methods.
Article
Chemistry, Analytical
Lanlan Li, Qirui Huang, Jing Xiao, Jiamin Feng, Shu Zhang, Hong Luo, Zhirong Zou, Xiaoli Xiong
Summary: In this study, Fe3O4 served as both an adsorbent and photocatalyst in the photochemical vapor generation-atomic fluorescence spectrometry (PVG-AFS) determination of Bi(III) after preconcentration. The effects of formic and acetic acid concentration, UV irradiation time, Fe3O4 concentration, and interferences from co-existing ions were investigated. Results showed that the AFS intensity was slightly enhanced by the mixed acid solution, but a significant enhancement was observed when Fe3O4 was used as a photocatalyst. Fe3O4 can decompose in the mixed acid solution, generating Fe3+ which acts as a sensitizer for improving Bi(III) efficiency. Under optimized conditions, the LOD of the proposed PVG-AFS system with or without preconcentration (5 mL sample) were 0.44 ng/mL and 0.07 ng/mL, respectively. The PVG-AFS system was successfully applied to the determination of water samples and demonstrated good accuracy and applicability with recoveries ranging from 94% to 104%.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Dilek Yildiz, Muhammet Atasoy, Ahmet Demirak
Summary: A method for determination of ultra-trace arsenic (III) using in-situ trapping and revolatilization techniques on a Pt-coated W-coil atom trap was reported. Multiple experimental conditions were optimized, and the accuracy of the method was validated using certified reference materials. Coating the surface of the W-coil trap with Pt ensures sensitivity for at least 350 atomization cycles.
ANALYTICAL LETTERS
(2022)
Article
Chemistry, Applied
Natalia Manousi, Abuzar Kabir, Kenneth G. Furton, Magdalini Stathogiannopoulou, Eleni Drosaki, Aristidis Anthemidis
Summary: A novel sol-gel pyridylethylthiopropyl functionalized silica-based sorbent was synthesized and used in an online column preconcentration system coupled with flame atomic absorption spectrometry for metal determination. The method was successfully applied for the analysis of commercially available beers, demonstrating its operational simplicity and good performance characteristics.
Article
Engineering, Multidisciplinary
Cagdas Buyukpinar, Suleyman Bodur, Elif Yazici, Zeynep Tekin, Nevim San, Okan Tarik Komesli, Sezgin Bakirdere
Summary: An eco-friendly and accurate analytical protocol was proposed for the determination of trace levels of cadmium in this study. By combining PVG and T-SQT-AT techniques, the analytical performance of the system was enhanced, with good recovery results obtained in tap water and daphne tea samples.
Article
Chemistry, Applied
Daisa Hakbart Bonemann, Ana Claudia Beduhn Luckow, Camila Correa Pereira, Alexander Ossanes de Souza, Solange Cadore, Adriane Medeiros Nunes, Mariana Antunes Vieira, Anderson Schwingel Ribeiro
Summary: This study measured the total concentration and bioaccessibility of various elements in different cultivars of tomato and their derivatives using MIP OES. Variations were found in the bioaccessible fraction of elements among different tomato samples, with total concentrations meeting dietary guidelines.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Chemistry, Applied
Andressa Jantzen da Silva Lucas, Eliezer Quadro Oreste, Helena Leao Gouvela Costa, Hector Martin Lopez, Carolina Dias Medeiros Saad, Carlos Prentice
Summary: This study investigated the use of cuticles from edible insects as a source of chitin and chitosan, obtained biotechnologically through enzymatic deproteinization. The efficiency of obtaining chitin was found to be 85%, with a total yield of 31.9%. Characterization using various techniques demonstrated the differentiation between chitin and chitosan based on the degree of deacetylation.
Article
Chemistry, Applied
Daisa Hakbart Bonemann, Alexander Ossanes de Souza, Camila Correa Pereira, Eliezer Quadro Oreste, Anderson Schwingel Ribeiro, Mariana Antunes Vieira
Summary: This study describes a sample preparation method using acid decomposition in a reflux system for the determination of Hg on xanthan gum samples by cold vapor atomic absorption spectrometry. The optimized conditions proved to be safe and efficient for the quantification of Hg with excellent recoveries. The method is suitable for the wide applicability of xanthan gum in various products.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Analytical
Eliezer Quadro Oreste, Alexander Ossanes de Souza, Camila Correa Pereira, Daisa Hakbart Bonemann, Mariana Antunes Vieira, Laiane de Moura Fontes, Celio Pasquini, Anderson Schwingel Ribeiro
Summary: The present study used MIP OES and LIBS techniques to analyze metals in ceramic tableware samples, finding that the highest concentrations were in Brazilian samples. LIBS results indicated the importance of pigmentation in ceramics, which may contain most of the potentially toxic elements.
MICROCHEMICAL JOURNAL
(2021)
Article
Veterinary Sciences
Paula Moreira Silva, Jamir L. S. Silva, Daisa H. Bonemann, Anderson S. Ribeiro, Lucas O. Silva, Gino Luigi Bonilla Lemos Pizzi, Charles Ferreira Martins
Summary: This study evaluated the levels of calcium, copper, and zinc in the hoof of Criollo foals and correlated them with the concentrations of these elements in soil and pasture. The results showed that different physiographic regions and seasons affect the levels of these elements in the hoof.
JOURNAL OF EQUINE VETERINARY SCIENCE
(2022)
Review
Polymer Science
Daniele Gomes Mueller, Eliezer Quadro Oreste, Monika Grazielle Heinemann, Daiane Dias, Felipe Kessler
Summary: This article discusses the importance of food transportation and distribution and how sensors can be used to improve food quality control. It also explores the relevance of amine determinations and their impact on human health, as well as the use of polymeric materials in sensor construction.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Engineering, Mechanical
Eliezer Quadro Oreste, Maria Carolina Salum Bulhosa, Bruna Lisboa Goncalves, Daniele Gomes Muller, Nathalia Souza Nascimento, Juliano Rosa de Menezes Vicenti, Felipe Kessler
Summary: The use of surface-functionalized polymers, such as polyethylene terephthalate (PET) films, has shown great potential in the development of flexible optoelectronic devices. This study confirmed the effectiveness of UV radiation and the direct grafting method in surface functionalization through different characterization techniques. The sensing capabilities of the functionalized films were evaluated by exposing them to different cation solutions, and the fluorescence signal variation was found to be dependent on the interaction between the functionalized polymer surface and the analyte. The simplicity, low cost, and possibility of using recycled polymer observed in this study contribute to sustainable development and environmental conservation.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2022)
Article
Chemistry, Applied
Ana Renata da Rosa Louzada, Leticia de Oliveira Oliz, Charlie Guimaraes Gomes, Daisa Hakbart Bonemann, Sabrina Harter Scherdien, Anderson Schwingel Ribeiro, Mariana Antunes Vieira
Summary: This study used MIP OES to determine the total concentration and bioaccessible fraction of minerals in peaches, revealing that different peach cultivars have varying mineral compositions. While peaches have good nutritional value, their mineral concentrations may not meet daily requirements, necessitating the consumption of other fruits and vegetables to complement the diet.
Article
Engineering, Environmental
Jaqueline F. de Souza, Emilly C. da Silva, Andre F. P. Biajoli, Daisa H. Bonemann, Anderson S. Ribeiro, Andre R. Fajardo
Summary: Phosphine-functionalized chitosan derivative combined with alginate beads exhibited superior adsorption performance for Cd2+ and Al3+ removal from water. The adsorption process followed pseudo-first-order kinetics and Freundlich isotherm model.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Organic
Ramesh Katla, Rakhi Katla, Eliezer Quadro Oreste, Felipe Kessler
Summary: Bis-arylsulfenyl-benzo-2,1,3-thiadiazoles were successfully synthesized using a simple and inexpensive catalyst, Pd-G3 XantPhos. Numerous benzene thiols reacted well with 4,7-dibromo-benzo-2,1,3-thiadiazole in DMF solvent with K2CO3 as the base, resulting in high product yields in a short reaction time. All synthesized compounds exhibited remarkable fluorescence properties within the visible range and have the potential for application as image probes in fluorescence microscopy. Additionally, these compounds have a wide range of potential uses in sensors and display other useful photophysical properties.
SYNTHESIS-STUTTGART
(2023)
Article
Food Science & Technology
Juliane Lima da Silva, Eliezer Quadro Oreste, Daiane Dias, Jaqueline Garda-Buffon
Summary: Mycotoxin contamination is a common issue in food safety. Electrochemical methods have been applied to determine mycotoxins with remarkable sensitivity and selectivity. This review paper focuses on the application of electrochemical techniques in the determination of several mycotoxins and highlights the importance of their detection.
FOOD ANALYTICAL METHODS
(2023)
Review
Chemistry, Analytical
Mayara Cristina Mombach Lorenz, Leandro Silva de Almeida, Ana Paula de Oliveira Lopes Inacio, Flavio Manoel Rodrigues da Silva Junior, Eliezer Quadro Oreste, Daiane Dias
Summary: Nowadays, the application of carbon-based materials in the development of chemically modified sensors is gaining attention due to their ability to generate methods with high sensitivity, stability, conductivity, accuracy, and low cost. As a result, these sensors have been used in environmental monitoring in an eco-friendly, sensitive, fast, efficient, inexpensive, and robust way. In this review, we first described carbon-based materials and their derivatives, followed by an overview of the manufacturing of chemically modified carbon-based sensors and their applications in environmental analytical chemistry for the determination of inorganic and organic compounds. Future perspectives on trends in the application of carbon-based materials for sensor modifications are also discussed.
Article
Green & Sustainable Science & Technology
Carolina Faccio Demarco, Daisa Hakbart Bonemann, Anderson Schwingel Ribeiro, Tito Roberto Sant'Anna Cadaval Jr, Marcos Alexandre Gelesky, Marcelo Godinho, Maurizio Silveira Quadro, Simone Pieniz, Robson Andreazza
Summary: Research found that Hydrocotyle ranunculoides demonstrated adaptive response to chromium by restoring photosynthetic pigment, altering functional groups and epidermal cells. Therefore, it is proposed to use a floating biofilter device to utilize this plant species for chromium decontamination.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Analytical
Liziane Oliveira de Avila, Daiane Placido Torres, Eliezer Quadro Oreste, Meibel Teixeira Lisboa, Carlos Augusto Posser Silveira, Anderson Schwingel Ribeiro, Adriane Medeiros Nunes, Rosane Martinazzo
Summary: An analytical method using atomic absorption spectrometry coupled to hydride technique with ultrasound assisted acidic extraction was developed for determination of inorganic arsenic species in retorted oil shale slurry. Trivalent arsenic was measured after sample stabilization and reaction with a reducing agent, while total inorganic arsenic was assessed by the pre-reduction of As(V) to As(III) and the difference in concentration between total inorganic arsenic and As(III). The limit of quantification was 3.7 mg kg(-1) for As(III) and 1.3 mg kg(-1) for itAs.
ANALYTICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Caroline D. Clasen, Sandy A. Silva, Kaiane Q. Ribeiro, Anderson S. Ribeiro, Mariana A. Vieira
Summary: The total concentrations and bioaccessible fractions of various elements were evaluated in pseudocereal samples, with negative correlations observed between bioaccessibility and total phenolic compounds.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
