Article
Chemistry, Applied
Jian Lee, Ye-Seul Park, Hwa-Jeong Lee, Yong Eui Koo
Summary: A novel method using diluted nitric acid and hydrogen peroxide for microwave-assisted digestion of milk samples was developed for elemental analysis. The optimized conditions resulted in accurate detection of various elements in milk samples.
Article
Food Science & Technology
Raffaello Tedesco, Maria del Carmen Villoslada Hidalgo, Massimiliano Varde, Natalie M. Kehrwald, Carlo Barbante, Giulio Cozzi
Summary: The study analyzed trace and rare earth elements in whey samples from cow and goat milk to provide valuable information on geographical origin and dairy quality.
Article
Chemistry, Analytical
Jing Hu, Hanjiao Chen, Xiaoming Jiang, Xiandeng Hou
Summary: In this study, it was found that photochemical vapor generation of halides can be achieved in organic-acid-free media, with performance comparable to traditional scenarios using acetic acid. The role of copper acetate complexes in facilitating the generation of halides was highlighted. Gas chromatography-mass spectrometry was used to identify methyl halides as principal volatile compounds, and various intermediate species were confirmed using different analytical methods. The method's application in analyzing bottled water and seawater showed spike recoveries between 92 and 101%.
ANALYTICAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Yahya R. Tahboub, Adnan M. Massadeh, Nihaya A. Al-sheyab, Diab El Shrafat, Israa A. Nsserat
Summary: This study aimed to compare levels of trace elements in human breast milk from Jordanian mothers and infant formula milk powder (IFMP) from the Jordanian market. Results showed that most elements, including toxic elements, had higher levels in human milk compared to IFMP, but were comparable to literature results. Positive correlations were observed between total toxic elements and Al, Cu, and Fe in human milk samples, indicating a possible coexistence of toxic elements with these elements.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Chemistry, Analytical
Carrier Coralie, Habibi Azza, Agarande Michelle, Augeray Celine, Bourles Didier, Maro Denis, Benedetti Lucilla
Summary: In this study, a new measurement method using ICP-MS/MS was developed to quantify I-129 at low levels. The method utilizes a new measurement medium and mass-shift mode to reduce memory effect and increase sensitivity. By comparing different reactional gases, O-2 was selected in the mass-shift mode to eliminate isobaric and polyatomic interferences and improve the quantitative iodine oxidation rate. The new method achieved a detection limit of 11 mBq L-1 without the need for chemical treatment.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Environmental Sciences
Andrew Turner, John W. Scott, Lee A. Green
Summary: Rare earth elements (REEs) were detected in consumer plastics, likely originating from recycled electronic plastics. Some plastics contained REEs even without detectable flame retardants markers, indicating a more generic source of these elements in consumer plastics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Davide Spanu, Alessandro Palestra, Veronica Prina, Damiano Monticelli, Simone Bonanomi, Sandro Usseglio Nanot, Gilberto Binda, Laura Rampazzi, Gianluca Sessa, David Callejo Munoz, Sandro Recchia
Summary: The unsuitability of microwave-assisted acid digestion followed by ICP-MS analysis for quantifying trace elements in ultrapure SiC was demonstrated due to contamination from memory effects of PTFE microwave vessels and the purity levels of acids. A new analytical protocol using LA-ICP-MS was found to be more effective, especially when the SiC samples were embedded in epoxy resin. The optimized protocol allows for accurate determination of elements at sub-mg/kg levels.
Article
Materials Science, Multidisciplinary
Natalia A. Korotkova, Vasilisa B. Baranovskaya, Kseniya Petrova
Summary: In this article, an analytical procedure for the analysis of waste Sm-Co magnets was developed using ICP-MS and ICP-OES. The experimental parameters related to microwave digestion and acid concentrations were optimized. The matrix effect on the ICP-MS analysis and optimal instrumental parameters were investigated. The proposed method was validated through recovery tests and inter-method experiments.
Article
Engineering, Environmental
Saeed Ahmad, Elizabeth H. Bailey, Muhammad Arshad, Sher Ahmed, Michael J. Watts, Scott D. Young
Summary: Deficiencies of iodine and selenium are common in areas like Gilgit-Baltistan in Pakistan, where populations consume locally grown agricultural produce with low levels of these micronutrients. Geochemical analysis of irrigation water and arable soil in this area showed low levels of iodine and selenium, indicating limited availability of these micronutrients. Further investigation is needed to determine the status of iodine and selenium in the local food supply and population.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Chemistry, Analytical
Minsik Kim, Jihye Kim, Jei-Won Yeon
Summary: This study evaluated the behavior of radioactive iodine in nuclear power plant severe accident conditions by measuring the concentrations of volatile I-2 and non-volatile iodine formed by thermal and radiolytic decomposition of NaIO3. The calibration curves of I- concentrations in UV-VIS spectrophotometry were found to be unaffected by pH in the range of 3-13. ICP-MS was used to measure the non-volatile I concentration due to overlapping UV-VIS absorption spectra of IO3- and I- in the range of 190-275 nm.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Food Science & Technology
Jianbo Hou, Wen Xie, Yan Qian, Wenhua Zhang, Yingzhu Shi, Wei Song, Chengjie Lou
Summary: An analytical method based on EMR-LC-MS/MS was developed for the determination of neonicotinoid insecticides and metabolites residues in milk and infant formula milk powder. The method involved the extraction of the residues using acetonitrile and extraction kits, followed by quantitative detection using LC-MS/MS with MRM modes. The method showed good accuracy and precision with acceptable recoveries and low relative standard deviations.
FOOD ANALYTICAL METHODS
(2023)
Article
Chemistry, Applied
Ana Jerse, Heidi Amlund, Rie R. Rasmussen, Jens J. Sloth
Summary: The collaborative study validated the method for determining iodine in animal feed, showing good accuracy and precision. The method was accepted by the European Committee for Standardisation as European Standard EN17050:2017.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2021)
Article
Biochemistry & Molecular Biology
Bin Li, Sew Lay Chua, Dingyi Yu, Sheot Harn Chan, Angela Li
Summary: This study established a reliable method for detecting silver nanoparticles (AgNPs) in food and evaluated their migration in milk and breast milk storage bags. The results showed no migration of AgNPs from the storage bags under various conditions.
Article
Chemistry, Applied
Tomas Pluhacek, Radka Pechancova, David Milde, Ricardo J. N. Bettencourt da Silva
Summary: A novel methodology for bottom-up evaluation of measurements based on complex sample pretreatment and instrumental quantification has been developed. The method was applied to total chromium determination in yeast samples, showing a relative expanded uncertainty lower than 20% and suitable for monitoring product contamination. Duplicate analyses are adequate for reference materials production with a relative uncertainty below 7%.
Article
Chemistry, Applied
Gabriel T. Druzian, Mariele S. Nascimento, Uillian M. F. M. Cerqueira, Cleber G. Novaes, Marcos A. Bezerra, Fabio A. Duarte, Erico M. M. Flores
Summary: The study introduced a MIC system for Cl, Br, and I determination in granola using ICP-MS, achieving high accuracy and reliability through experiments.
Article
Chemistry, Analytical
Diogo La Rosa Novo, Thibaut Van Acker, Joke Belza, Frank Vanhaecke, Marcia Foster Mesko
Summary: Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) was used to determine the concentrations of bromine (Br) and iodine (I) in human hair strands of individuals under synthetic thyroid hormone treatment. Matrix-matched external calibration standards were prepared using spiked hair strands. The results obtained by LA-ICP-MS were in agreement with those determined by pneumatic nebulization-ICP-MS after digestion. Subjects under treatment with synthetic thyroid hormones showed higher iodine concentrations compared to healthy subjects.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Mariele S. Nascimento, Gabriel T. Druzian, Leticia S. F. Pereira, Marcia F. Mesko, Rochele S. Picoloto, Paola A. Mello, Erico M. M. Flores
Summary: A microwave-assisted extraction method was developed for determining Cl, Br, and I in medicinal plants. The method showed accurate and reliable results compared to a reference method using ICP-MS. Care should be taken to control the carbon content to avoid interference.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Environmental Sciences
Altevir Rossato Viana, Bruna Godoy Noro, Daniel Santos, Katianne Wolf, Yasmin Sudatti Das Neves, Rafael Noal Moresco, Aline Ferreira Ourique, Erico Marlon Moraes Flores, Cristiano Rodrigo Bohn Rhoden, Luciana Maria Fontanari Krause, Bruno Stefanello Vizzotto
Summary: This study investigated the phytochemical compositions and biological activities of Vassobia breviflora extract. The extract exhibited excellent antioxidant and antimicrobial activities, as well as cytotoxic effects against various tumor cells. Moreover, it also increased the production of reactive oxygen species.
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES
(2023)
Article
Chemistry, Analytical
Jader R. K. Silveira, Leticia C. Brudi, Samuel R. Waechter, Paola A. Mello, Adilson B. Costa, Fabio A. Duarte
Summary: An extraction and preconcentration method based on dispersive liquid-liquid microextraction (DLLME) for Cu determination in beer by flame atomic absorption spectrometry (FAAS) was developed. The main parameters that influence the extraction efficiency were studied, and the accuracy was evaluated by comparison with other methods and recovery tests. The proposed DLLME/FAAS method showed a low limit of detection and quantification for Cu determination.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Felipe A. Silva, Beatriz R. Rigui, Cristian R. Andriolli, Erico M. M. Flores, Paola A. Mello, Rochele S. Picoloto
Summary: A miniaturized liquid-liquid extraction (LLE) method was proposed for pre-concentration of Na, K, Ca, and Mg in crude oil. The method showed no statistical difference compared to the reference values, with relative standard deviations lower than 6%. The proposed miniaturized LLE method presents several advantages, such as ease-of-use, high throughput, and low limits of quantification, making it an environmentally friendly and cost-effective alternative for routine analyses.
Article
Chemistry, Analytical
Jaime S. Mandlate, Alessandra S. Henn, Paola A. Mello, Erico M. M. Flores, Juliano S. Barin, Fabio A. Duarte
Summary: A simple and fast sample preparation method called microwave-induced combustion in disposable vessels (MIC-DV) was developed for Cl and S determination in crude oil using ICP-OES. The method allows efficient digestion of up to 10 mg of crude oil per cycle, reaching a total sample mass of 50 mg.
ANALYTICA CHIMICA ACTA
(2023)
Article
Agriculture, Multidisciplinary
Priscila T. Scaglioni, Fernanda P. Balbinot, Filipe S. Rondan, Diogo L. R. Novo, Alisson A. Silva, Marcia F. . Mesko
Summary: A strategy using microwave-induced combustion (MIC) and ion chromatography coupled to mass spectrometry (IC-MS) was proposed for the determination of bromine and iodine bioaccessibility from edible seaweeds after in vitro digestion. The concentrations of bromine and iodine in edible seaweeds using the proposed methods were comparable to those obtained using conventional methods. Trueness was assessed by recovery experiments and the results showed good accuracy. MIC was proposed as a sample preparation method for bioaccessible and residual fractions.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Environmental Sciences
Jorge Osorio-Martinez, Luis F. F. Silva, Erico M. M. Flores, Gabriel T. T. Druzian, Jesus Olivero-Verbel
Summary: This study assessed the concentrations and toxicity of potentially toxic elements (PTEs) in urban dust from Barranquilla, Colombia. The results showed that the PTEs in the dust had negative effects on the physiological parameters of Caenorhabditis elegans, indicating that it can be used as a sensitive organism for warning systems related to biota risks associated with air pollution.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Multidisciplinary Sciences
Rosana Santos de Moraes, Paulo Carteri Coradi, Marcela Trojahn Nunes, Marisa Menezes Leal, Edson Irineu Muller, Paulo Eduardo Teodoro, Erico Marlon Moraes Flores
Summary: Drying rice in a silo-dryer-aerator using single-layer loading at low temperatures resulted in uniform drying. This study evaluated the physical, physicochemical, and morphological quality of rice grain cultivars in the lower and upper layers of the silo-dryer-aerator. The results showed that drying rice in silo-dryer-aerator attenuated the moisture diffusivity in the grains and preserved the physicochemical constituents and morphology of starch, especially in the lower layers throughout the 2-month drying. The Guri INTA and BRS Pampeira cultivars exhibited the highest resistance to drying and had the most uniform final quality.
Article
Chemistry, Analytical
Jussiane S. S. Silva, Graciela M. M. Heidrich, Bruno O. O. Poletto, Jose N. G. Paniz, Valderi L. L. Dressler, Erico M. M. Flores
Summary: A direct solid sampling method using ETV-ICP-MS was developed for determining mercury in bioresorbable calcium phosphate-based materials. The method involved fast sample heating with a halogen lamp, followed by vaporization and cooling steps. Mercury vaporized at a low temperature and did not co-vaporize the main matrix. External calibration using aqueous solutions was used for quantification. The method showed good accuracy, precision, and sample throughput, making it suitable for routine analyses.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Chemistry, Analytical
Gustavo Rossato Bitencourt, Fabio Andrei Duarte, Valderi Luiz Dressler, Rodrigo Cordeiro Bolzan, Erico Marlon de Moraes Flores, Paola Azevedo Mello
Summary: A single method using chemical vapor generation coupled with microwave-induced plasma optical emission spectrometry was developed for the determination of As and Hg in dietary supplements. The method complied with the maximum concentration requirements set by the United States Pharmacopeia and showed no statistical difference compared to comparative methods. The proposed method can be considered an alternative for the quality control of As and Hg in dietary supplements.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Food Science & Technology
Vanessa Bordin Viera, Natieli Piovesan, Renius De Oliveira Mello, Juliano Smanioto Barin, Aline De Oliveira Fogaca, Cezar Augusto Bizzi, Erico Marlon De Moraes Flores, Ana Carolina Dos Santos Costa, Diego Elias Pereira, Juliana Kessia Barbosa Soares, Ernesto Hashime Kubota
Summary: This study determined the antioxidant activity of red onion peel extract using ultrasound extraction, and found that different ultrasound power and solvent concentration had varying effects on different antioxidant indicators.
JOURNAL OF CULINARY SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Gabriel T. Druzian, Mariele S. Nascimento, Rochele S. Picoloto, Marcia F. Mesko, Erico M. M. Flores, Paola A. Mello
Summary: A method for determining sub-ppb levels of mercury in crude oil using cold vapor generation inductively coupled plasma mass spectrometry (CV-ICP-MS) was developed by optimizing the operational parameters for crude oil digestion and evaluating the accuracy of the method. The optimized conditions allowed for the complete digestion of up to 1.2 g of crude oil and achieved a very low limit of detection.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Spectroscopy
Piyali Deb Barman, Ashok Kumar Maurya, Subhendu Ghosh, Ankit Roy, Mukul Madaan
Summary: In X-ray spectroscopic studies, K beta 1,3 lines have been used to examine the chemical states of 3d transition metals, but are not suitable for characterizing iron oxides. Instead, FeL-lines, which involve the valence shell 3d electrons, were inspected and found to provide information on the chemical states of iron. The study established a linear relationship between the chemical shift of FeL beta 1 line and spin multiplicity, allowing for the speciation of iron.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2024)