Article
Environmental Sciences
Yu Xing, Jing Li, Jingjing Yang, Junyi Li, Weiyi Pang, Francis L. Martin, Li Xu
Summary: This study used spectrochemical techniques to investigate the cytotoxicity of nanoplastics with different surface charges in HepG2 cells. The results showed that all three types of nanoplastics caused biomolecular alterations in cells, affecting cellular lipids, proteins, amino acids, and genetic material. Surface modifications were found to lead to cellular biochemical changes and adverse biological effects, with PS-NH2 exhibiting higher toxicity compared to PS or PS-COOH.
ENVIRONMENTAL POLLUTION
(2023)
Article
Multidisciplinary Sciences
Helina Heino, Lassi Rieppo, Tuija Mannisto, Mikko J. Sillanpaa, Vesa Mantynen, Simo Saarakkala
Summary: ATR-FTIR spectroscopy coupled with machine learning-based PLS-DA was used to study the detection of SARS-CoV-2 from nasopharyngeal swab samples. The results indicate that the ATR-FTIR spectrum contains specific information for SARS-CoV-2 infection, but the diagnostic performance is moderate.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
H. Lee, D. Lee, J. M. Seo
Summary: This study collected and analyzed paint from an actual site of ship collision, comparing paint traces of the damaged ship and the ship suspected to be responsible for the collision through various chemical analysis methods. The ship responsible for the collision could be identified by performing a comparative analysis of the extracted paint.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Rosario Javier-Astete, Jessenia Melo, Jorge Jimenez-Davalos, Gaston Zolla
Summary: This study validated a model for the classification of wood species and a universal model for the rapid determination of cellulose, hemicellulose, and lignin using FTIR spectroscopy coupled with chemometrics. The results showed that the full spectra can be used to differentiate different species and identify infrared peaks associated with cellulose, hemicellulose, and lignin. In addition, the full spectra helped build a three species universal model for quantifying the principal wood chemical components. Therefore, the study demonstrated that FTIR-ATR, together with chemometrics, is a reliable method for discriminating wood species and determining wood chemical composition.
SCIENTIFIC REPORTS
(2023)
Article
Food Science & Technology
Isabel Cristina de Santana Alves Tolentino, Josane Cardim de Jesus, Daniele Gomes Conceicao, Rebeca Rodrigues Vieira Onelli, Lucas Caiafa Cardoso Reis, Leandro Soares Santos, Sibelli Passini Barbosa Ferra
Summary: Mid-infrared spectroscopy and chemometric techniques were used to verify the authenticity of commercial prato cheeses. Analysis of the samples showed that 16 commercial samples overlapped with mozzarella cheese and 4 overlapped with prato cheese. Discriminant methods yielded classification rates above 84%. These techniques efficiently differentiated and classified the samples, indicating that commercial samples were likely not authentic prato cheese.
INTERNATIONAL DAIRY JOURNAL
(2023)
Article
Construction & Building Technology
J. Higl, D. Hinder, C. Rathgeber, B. Ramming, M. Linden
Summary: The early stages of tricalcium silicate hydration were studied using in situ ATR-FTIR spectroscopy, with a data reduction method proposed for describing the kinetic evolution of the hydrate phase in detail. The results were in agreement with solid-state NMR spectroscopy measurements, suggesting that ATR-FTIR spectroscopy can offer a widely available technique for detailed in situ characterization of hydrating systems.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Spectroscopy
Daniel Martin, Tercia Lopes, Sandra Correia, Jorge Canhoto, Maria Paula M. Marques, Luis A. E. Batista de Carvalho
Summary: This study presents the first complete vibrational analysis of tamarillo fruit, revealing the location and amount of important nutraceutical compounds. Different chemical components were found in different parts of the fruit, especially phenolic compounds, unsaturated fatty acids/esters, and polymeric chains. This valuable information provides insights into the nutritional value of tamarillo fruit.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Multidisciplinary Sciences
Natalia Szulc, Michal Burdukiewicz, Marlena Gasior-Glogowska, Jakub W. Wojciechowski, Jaroslaw Chilimoniuk, Pawel Mackiewicz, Tomas Sneideris, Vytautas Smirnovas, Malgorzata Kotulska
Summary: Several disorders are related to amyloid aggregation of proteins, and identifying amyloids usually requires high resolution microscopies or less expensive methods like infrared spectroscopy. Different experimental methods can lead to peptide misclassification. Bioinformatics methods show good robustness to weak supervision.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Carla Carolina Silva Bandeira, Karen Cristina Rolim Madureira, Meire Bocoli Rossi, Juliana Failde Gallo, Ana Paula Marques Aguirra da Silva, Vilanilse Lopes Torres, Vinicius Alves de Lima, Norival Kesper Junior, Janete Dias Almeida, Rodrigo Melim Zerbinati, Paulo Henrique Braz-Silva, Jose Angelo Lauletta Lindoso, Herculano da Silva Martinho
Summary: A study utilizing micro-Fourier-transform infrared reflectance spectroscopy (micro-FTIR) investigated blood serum samples of COVID-19 patients and healthy individuals, and found that the carbonyl C=O vibration could serve as a spectral marker for the degree of IgG glycosylation, allowing for differentiation of COVID-19 patients based on their severity. This technology has the potential to be a fast screening tool for immune response in COVID-19 individuals and is important for future research and severity prediction.
SCIENTIFIC REPORTS
(2022)
Review
Chemistry, Multidisciplinary
Qiuqi Zhang, Lei Zhao, Guoliang Qi, Xiaoru Zhang, Cheng Tian
Summary: The coronavirus pandemic poses a significant threat to human health, and early detection and prevention of further escalation are of utmost importance. The current method of sample collection and RNA testing using the nasopharyngeal swab method and real-time polymerase chain reaction has limitations. Optical techniques, such as optical sensing, spectroscopy, and imaging, show promise in virus detection due to their speed, accuracy, and cost-effectiveness. This mini review summarizes the development of vibrational spectroscopy techniques for the detection of the SARS-CoV family, highlighting their advantages and future possibilities in the field of photonics-based devices for COVID-19 detection.
FRONTIERS IN CHEMISTRY
(2023)
Article
Agronomy
Chiara Pro, Danilo Basili, Valentina Notarstefano, Alessia Belloni, Marco Fiorentini, Stefano Zenobi, Sonila Alia, Arianna Vignini, Roberto Orsini, Elisabetta Giorgini
Summary: Utilizing ATR-FTIR spectroscopy to assess the impact of different soil tillage methods and nitrogen fertilization levels on durum wheat, it was found that protein content was not reduced when grown on no-tillage soil. The macromolecular composition of leaves and caryopses was influenced by tillage methods, while fertilizer concentrations did not have significant effects. These results support the adoption of no-tillage soil treatments and reduced fertilization dosage for durum wheat management strategies.
Article
Environmental Sciences
Mahmoud Kiannejad Amiri, Sasan Zahmatkesh, Mohammad Reza Sarmasti Emami, Awais Bokhari
Summary: The purpose of this paper is to synthesize ultrafiltration polycarbonate membranes containing Al2O3 nanoparticles using the phase separation procedure, and evaluate their ability to remove emerging contaminants from wastewater. The effects of temperature and nanoparticle content on the membrane structure and filtration performance were investigated.
Article
Instruments & Instrumentation
Maria Lasalvia, Vito Capozzi, Giuseppe Perna
Summary: This study compares the FTIR spectra of different breast cell lines and finds significant differences in absorption spectra, particularly in the amide I and II bands and the intensity of nucleic acid bands. The ratio of certain peaks at specific wavenumbers is able to differentiate between non-malignant, malignant, and metastatic cells. These findings suggest that FTIR microspectroscopy has potential as a tool for cytological diagnosis of breast cancer.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Chemistry, Physical
E. P. Kovalev, A. S. Shalygin, S. A. Prikhod'ko, N. Yu Adonin, O. N. Martyanov
Summary: In this study, the absorption of acetylene by ionic liquids (ILs) was investigated using in situ ATR-FTIR spectroscopy. The analysis revealed a correlation between the spectral changes of absorbed acetylene and the nature of ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Spectroscopy
Ali Kocak
Summary: It has been shown that hair can accumulate and trap drugs, providing an indication of long-term exposure. Studying changes in the structure of hair and the effects of cosmetic treatments can help understand false positive results in drug testing and the impact of drugs on hair structure.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Elena Naumovska, Gabriel Kofi Nzulu, Laura Mazzei, Arnaud Le Febvrier, Kristina Komander, Martin Magnuson, Max Wolff, Per Eklund, Maths Karlsson
Summary: Results from an infrared spectroscopy study on hydrated nanocrystalline films of BaZr1-xScxO3-x/2 with different Sc concentrations show variations in the O-H stretching bands, indicating different proton configurations. Higher Sc concentrations exhibit a distinct O-H stretching band, while lower Sc concentrations show a broader, weaker band.
VIBRATIONAL SPECTROSCOPY
(2024)