Article
Chemistry, Analytical
Liang Fu, Hualin Xie, Jianhua Huang, Xianhua Chen, Lin Chen
Summary: This study introduces a novel strategy for determining ultra-trace Ti in human serum using ICP-MS/MS, successfully eliminating interference and achieving high sensitivity. The proposed method was evaluated for accuracy and reliability through spike recovery experiments and comparative analysis, confirming its effectiveness for accurate determination of ultra-trace Ti in serum samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Ronja Suvela, Matti Niemela, Paavo Peramaki
Summary: The present study introduces a new and selective analysis method for determining low xanthate concentrations. This study addresses the growing concern over the environmental impact of xanthates and the need for reliable analysis methods. The method utilizes the complex formation between xanthates and various metal ions in aqueous solution, followed by liquid-liquid extraction and high-performance liquid chromatography, to accurately determine xanthates. By using Cu(II) as the complex metal ion, good separation and high measurement sensitivity are achieved. The method has been optimized for sodium isopropyl xanthate and sodium isobutyl xanthate, with detection limits of 24.7 μg/L and 13.3 μg/L, respectively. With a linear calibration range of 0.1-15 mg/L and a total analysis time of 4-5 min, this method offers a fast and sensitive option for selective xanthate determination.
JOURNAL OF SEPARATION SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Jacek Sikorski, Magdalena Matczuk, Agnieszka Kaminska, Joanna Kruszewska, Maciej Trzaskowski, Andrei R. Timerbaev, Maciej Jarosz
Summary: This study presents a versatile method for studying interactions between SPIONs and proteins. By monitoring changes in size distribution when exposed to human serum, the formation of stable protein corona and particle disaggregation were revealed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Yanbei Zhu
Summary: Nitrous oxide (N2O) was investigated as a reaction gas for the determination of rare earth elements (REEs) by inductively coupled plasma-tandem quadrupole mass spectrometry (ICP-QMS/QMS). The use of N2O as the reaction gas improved the yields of (MO+)-M-m-O-16 for Eu and Yb, resulting in improved sensitivities for measurement of Eu and Yb. The use of N2O as the reaction gas also helped suppress Ba-related spectral interferences with the measurement of Eu. The method was validated by determining REEs in certified reference materials.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Analytical
Stefano Bertinetti, Eduardo Bolea-Fernandez, Mery Malandrino, Beatrice Moroni, David Cappelletti, Marco Grotti, Frank Vanhaecke
Summary: A new method has been developed for accurate and precise Sr isotopic analysis of microsamples via ICP-MS/MS, utilizing a multivariate approach to optimize instrument settings for maximum sensitivity and precision of isotope ratios. The method was found to be accurate and precise, with external precision of 0.17% at an analytical concentration of 2 ng g(-1). Results showed good agreement with literature data for samples with low Sr concentrations, demonstrating the suitability of the procedure for complex matrices with limited sample amounts.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Biochemical Research Methods
Shaun T. Lancaster, Thomas Prohaska, Johanna Irrgeher
Summary: This study proposes the use of nitrous oxide (N2O) as a non-corrosive and non-toxic alternative for calcium isotope analysis. Instrument performance testing shows that N2O can achieve equivalent detection limits and background concentrations compared to traditional gases. Further testing with synthetic standards highlights N2O's advantage in separating interferences from potassium and magnesium.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Melissa Gilbert, Peng Ho, Laura Whitmore, Alan Shiller
Summary: There is a growing interest in dissolved gallium (Ga) in natural waters for tracking water masses, but current analytical methods are time-consuming and labor-intensive. In this study, an automated isotope dilution method was developed to determine Ga in seawater using commercially available equipment. The method addressed challenges such as sample volume and pre-concentration, instrumental interferences, sample carryover, sample recovery variability, and improved detection limits, accuracy, and precision. The new automated method showed comparable Ga concentrations to traditional methods but with greater precision and a lower detection limit.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Emmanouil Mavrakis, Spiros A. Pergantis
Summary: Microfluidics coupled with ICP-MS allows for powerful quantitation procedures utilizing internal standardization and standard additions, improving determination accuracy for various sample types. The efficient coupling of microfluidic chip to ICP-MS system using a combination of commercially available components enables highly sensitive detection of metal isotopes with minimal sample consumption. High average recoveries and low relative standard deviations were achieved for determined elements across multiple matrices, showcasing the advantages of this newly developed chip-based microfluidic SDA ICP-MS technique.
ANALYTICA CHIMICA ACTA
(2021)
Article
Spectroscopy
Liang Fu, Hualin Xie, Jianhua Huang, Xianhua Chen, Lin Chen
Summary: An analytical method utilizing reaction gas mixtures for ICP-MS/MS was developed to eliminate spectral interferences and detect metal impurity elements in LiPF6 with high sensitivity. The method successfully eliminated interferences, with detection limits ranging from 0.30 to 63.8 ng L-1, and showed good accuracy and precision compared to SF-ICP-MS analysis.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Review
Chemistry, Multidisciplinary
Kate Moghadam, Diane Beauchemin
Summary: To analyze trace evidence at crime scenes, non-destructive or low-sample analysis techniques are preferred. One such technique is solid sampling ETV-ICPOES, which requires only a small amount of sample. This article discusses the capabilities of ETV-ICPOES in forensic analysis and presents various methods for analyzing physical evidence. Internal standardization and multivariate analysis are used to compensate for sample loading effects and enable quantification and discrimination of evidence. The article also explores future perspectives for utilizing ETV-ICPOES in forensic settings.
CHEMICAL COMMUNICATIONS
(2023)
Article
Spectroscopy
Kaitlyn J. Suski, David M. Bell, Matt K. Newburn, M. Liz Alexander, Dan Imre, David W. Koppenaal, Alla Zelenyuk
Summary: Laser ablation inductively coupled plasma mass spectrometry is a powerful technique for trace element analysis of solid samples, but its full quantitative capability is limited by the complex relationships between various factors. Altering laser ablation conditions can effectively change the physicochemical properties of LA-generated particles and improve the understanding of their impact on corresponding ICPMS signals. This multidimensional particle characterization approach can comprehensively study LA-generated particles and their effects on ICPMS signals, with potential for extension to other samples and laser wavelengths.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Review
Chemistry, Analytical
Daniel Torregrosa, Guillermo Grindlay, Luis Gras, Juan Mora
Summary: ICP-MS is commonly used in life sciences for element content and speciation studies, but can also serve as a detector for immunoassays. Despite its advantages such as high sensitivity, multiplexed capabilities, and robustness, immunoassays based on ICP-MS detection are not well-known and lack significant breakthroughs in routine clinical applications.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Cristian Suarez-Oubina, Paloma Herbello-Hermelo, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: Analytical methods based on DRC technology and using ammonia as a reaction gas have been developed for the determination of ultra-trace Ti, Zn, Cu, and Ag by ICP-MS. DRC effectively overcomes spectral interferences from complex matrices, and different DRC approaches using ammonium as a reaction gas are compared to improve the measurement accuracy and precision.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
E. Mavrakis, Z. Toprakcioglu, N. Lydakis-Simantiris, T. P. J. Knowles, S. A. Pergantis
Summary: As the use of microfluidic chips for biological samples handling increases, there is a growing demand to combine them with powerful analytical techniques such as ICP-MS. This study demonstrates the successful coupling of a chip-based supersonic microfluidic nebulizer to an ICP-MS through the use of a spray chamber with a laminar flow makeup gas. The system shows promising performance in single-particle and single-cell analysis.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Juan Jose Lopez-Mayan, Sergio del-Angel-Monroy, Elena Pena-Vazquez, Maria Carmen Barciela-Alonso, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: This study developed a method for isolating and determining background levels of titanium dioxide nanoparticles in seaweed, demonstrating good stability and accuracy through validation experiments.
Article
Food Science & Technology
Fiorella Iaquinta, Florencia Tissot, Lucimar Lopes Fialho, Joaquim A. Nobrega, Mariela Piston, Ignacio Machado
Summary: An optimized method using tetramethylammonium hydroxide for alkaline sample treatment was validated for the determination of Cu, Mo, and Zn in beef samples from Uruguay. The method involved multivariate experiments, flame atomic absorption spectrometry for Cu and Zn, and electrothermal atomic absorption spectrometry for Mo. The results showed statistical equivalence to certified values and total acid digestion, with analytical precision below 8%.
FOOD ANALYTICAL METHODS
(2021)
Article
Chemistry, Analytical
Luana S. Moreira, Ana P. R. Santana, Floriatan S. Costa, Josiane B. Vera, Mario H. Gonzalez, Erik G. P. da Silva, Clarice D. B. Amaral
Summary: A natural deep eutectic solvent (NADES) was used as a solvent in ultrasound-assisted extraction (UAE) for the determination of As and Cd in fish and shellfish samples. The study found that the use of KED mode resulted in higher sensitivity, and the extraction procedure was accurate and reliable.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Leticia Kreutz Rosa, Floriatan Santos Costa, Cecilia Moraes Hauagge, Rafael Zancan Mobile, Antonio Adilson Soares de Lima, Clarice D. B. Amaral, Raquel C. Machado, Ana Rita A. Nogueira, Joao Armando Brancher, Melissa Rodrigues de Araujo
Summary: The study found significant increases in salivary concentrations of certain macro- and microelements in schizophrenia patients, along with higher prevalence of caries and periodontal disease. Exploratory analysis revealed different patterns in salivary composition of schizophrenia patients influenced by oral health conditions and medication usage.
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
(2021)
Article
Food Science & Technology
Iago J. S. da Silva, Matheus L. de Mello, Andre F. Lavorante, Ana P. S. Paim, Joaquim A. Nobrega, Maria J. da Silva
Summary: Recent increase in consumption of collagen-based foodstuffs, especially collagen hydrolysate as a dietary supplement, lacks comprehensive information on essential and toxic elements content. This study evaluated the mineral profile of collagen hydrolysate and gelatin using ICP OES and ICP-MS, finding low contribution to Dietary Reference Intake values and minimal risk of exposure to arsenic and cadmium. Rigorous quality control of collagen hydrolysate, particularly for sodium content, is recommended to avoid health problems associated with excessive intake.
FOOD ANALYTICAL METHODS
(2021)
Article
Chemistry, Analytical
Luana S. Moreira, Floriatan S. Costa, Raquel C. Machado, Ana Rita A. Nogueira, Mario H. Gonzalez, Erik G. P. da Silva, Clarice D. B. Amaral
Summary: This study investigated the behaviors of internal standards with different flow rates of the cell collision gas (He) for the determination of Cd, Pb, Pd, Pt, Rh, and Sn in fish and mollusk samples by ICP-MS. Addition and recovery experiments were conducted to evaluate the method's accuracy, with self-organizing map (SOM) proving to be an effective tool for selecting the most appropriate internal standards.
Article
Chemistry, Analytical
Matheus L. de Mello, Fernanda C. Pinheiro, Diego Carnaroglio, Joaquim A. Nobrega
Summary: This study explores the use of microwave-assisted sample preparation combined with inductively coupled plasma-optical emission spectrometry to determine the content of various inorganic elements. It was found that using diluted nitric acid solutions instead of HF for quantitative analysis of zinc oxide, kaolin, zinc residue, and zinc sulfide is feasible, but tailored procedures need to be considered.
ANALYTICAL LETTERS
(2022)
Article
Chemistry, Physical
Taciana G. S. Guimaraes, Daniel F. Andrade, Ana P. R. Santana, Poliana Moser, Sabrina S. Ferreira, Iohanna M. N. R. Menezes, Clarice D. B. Amaral, Andrea Oliveira, Mario H. Gonzalez
Summary: Amino acid-based deep eutectic solvents (AADES) were prepared in this study by mixing beta-alanine with various hydrogen bond donors and water. The optimal proportions of components were determined to achieve low density and viscosity, which are crucial for efficient sample preparation. AADES showed promising potential as solvents for extracting polar compounds, metals, and semimetals, with solvatochromic and thermal analyses providing additional insights into their properties.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Food Science & Technology
Luana S. Moreira, Floriatan S. Costa, Rita de Cassia Lidorio, Luan W. S. Toledo, Andrea Oliveira, Mario H. Gonzalez, Erik G. P. da Silva, Clarice D. B. Amaral
Summary: In this study, formic acid was used for the extraction of Cd and Pb in biological tissues, followed by graphite furnace atomic absorption spectrometry (GF AAS) for their determination. The accuracy and precision of the method were evaluated using certified reference materials, and the limits of quantification were found to be below the regulatory limits. The method was successfully applied to mollusks and fish tissue samples from coastal areas in Brazil, showing concentrations below the allowed limits, except for one mollusk sample. This study presents a promising and cost-effective analytical procedure for the extraction of toxic elements in biological tissues.
FOOD ANALYTICAL METHODS
(2022)
Article
Chemistry, Applied
Floriatan Santos Costa, Luana Santos Moreira, Alisson Moreira Silva, Rafael J. Silva, Mayara Padovan dos Santos, Erik Galvao Paranhos da Silva, Marco Tadeu Grassi, Mario Henrique Gonzalez, Clarice D. B. Amaral
Summary: A MAE method using NADES was developed for the determination of Cd, Cu, Fe, Mn, and Zn in medicinal herb samples, showing high recovery rates and low standard deviation, making it suitable for mineral element analysis in herbal samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Beatriz M. M. Fontoura, Ariane I. I. Barros, Joaquim A. A. Nobrega
Summary: This study focused on using microwave-induced plasma optical emission spectrometry (MIP-OES) for urine analysis in a complex matrix with high concentrations of easily ionizable elements (EIEs). The urine matrix caused interferences for different elements, and strategies such as internal standardization and dilution were employed to correct these effects. Several potential internal standards were investigated, and the accuracy and precision of the method were evaluated. The results showed successful urine analysis by MIP-OES using these strategies.
ANALYTICAL METHODS
(2023)
Review
Chemistry, Applied
Samara Soares, Liz Mary B. Moraes, Fabio R. P. Rocha, Alex Virgilio
Summary: This article evaluates the analytical methods for quality control of milk and dairy products, proposing a diversity of choices from traditional methods to innovative proposals. The results demonstrate the predominance of microwave-assisted acid digestion for sample mineralization and plasma-based techniques for elemental determination.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Analytical
Leonardo Clemente Traversa, Joao Victor Biagi Santiago, Evilim Martinez de Oliveira, Edilene Cristina Ferreira, Alex Virgilio, Jose Anchieta Gomes Neto
Summary: Novel applications of closed-vessel conductively heated digestion system (CHDS) were proposed for the determination of Ca, K, Mg, Na, Cu, Fe, Mn, and Zn in biomass, biochar, oyster shell flour, bone meal, and swine manure. The results obtained by CHDS were comparable to microwave-assisted digestion (MW-AD) and certified values of reference materials. The use of 7 mol L-1 HNO3 showed lower blanks and can be a good alternative for elemental determinations using solution-based sample introduction systems.
ANALYTICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Legna Colina-Vegas, Mariana da Cruz B. Silva, Caroline de Souza Pereira, Ariane Isis Barros, Joaquim Araujo Nobrega, Maribel Navarro, Matthias Rottmann, Sarah D'Alessandro, Nicoletta Basilico, Alzir Azevedo Batista, Diogo R. M. Moreira
Summary: Coordination of metal complexes with antimalarial quinolines shows potential in improving their bioactivity and inhibiting multiple stages of the Plasmodium life cycle.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Letter
Clinical Neurology
Patricia Aurea Andreucci Martins Bonilha, Victoria Cavalcanti de Souza, Isadora Branda, Floriatan Santos Costa, Clarice D. B. Amaral, Beatriz Gioppo Betini, Egberto Reis Barbosa, Helio Afonso Ghizoni Teive
PARKINSONISM & RELATED DISORDERS
(2023)
Review
Chemistry, Analytical
Beatriz M. Fontoura, Florencia Cora Jofre, Trey Williams, Marianela Savio, George L. Donati, Joaquim A. Nobrega
Summary: Microwave-induced plasma optical emission spectrometry (MIP-OES) has made significant advancements in recent years, positioning itself as a competitive alternative to traditional inductively coupled plasma optical emission spectrometry (ICP-OES). This review compares the performance and matrix effect handling of MIP-OES with ICP-OES, and discusses strategies to overcome limitations of MIP-OES. Improvements in instrument accessories, plasma diagnostics, calibration methods, and sample preparation have enhanced the sensitivity and accuracy of MIP-OES.
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)
