-
A forensic spectroscopic identification analysis on skin evanescent trauma by chemometrics Vib. Spectrosc. (IF 2.5) Pub Date : 2024-04-11 Yuanyuan Zhang, Gongji Wang, Xinggong Liang, Hao Wu, Zeyi Hao, Shuo Wu, Mingyan Deng, Run Chen, Kai Yu, Zuan Deng, Xin Wei, Kai Zhang, Zhenyuan Wang
In contemporary biomedicine, rapid diagnosis and accurate treatment of trauma is a top priority. The skin, as the organ with the most extensive contact with the outside world, is always inevitably and easily scarred when subjected to varying degrees of violence. However, when evanescent trauma occurs, the judgment of trauma becomes quite difficult, especially for closed trauma. Evanescent trauma mainly
-
A correction method for mitigating absorbance discrepancies between near-infrared spectrometers through the incorporation of blended carbon-titanium dioxide powder Vib. Spectrosc. (IF 2.5) Pub Date : 2024-04-02 Zhixiang Zhang, Guimin Cai, Jiachen Li, Hubin Liu, Tiancheng Huang, Longlian Zhao, Junhui Li
In near-infrared spectroscopy analysis, ensuring the accurate transfer of models between different instruments relies on maintaining the accuracy of instrument wavelengths and absorbance. To mitigate absorbance drift at different wavelength points, this paper proposes a near-infrared spectroscopy point-by-point quadratic polynomial correction method based on carbon-titanium dioxide powder samples.
-
Photonic data analysis in 2050 Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-22 Oleg Ryabchykov, Shuxia Guo, Thomas Bocklitz
Photonic data analysis is a field at the intersection of imaging, spectroscopy, machine learning, and computer science. The diversity of both data types and application scenarios requires flexibility in the methods applied, combining a full range of computational methods, from classical chemometric techniques to state-of-the-art deep learning solutions. Interdisciplinary and international collaborations
-
Coherent Raman spectroscopy: Quo vadis? Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-21 K. Brzozowski, W. Korona, A. Nowakowska, A. Borek-Dorosz, A. Pieczara, B. Orzechowska, A. Wislocka-Orlowska, Michael Schmitt, J. Popp, M. Baranska
Although the potential of Coherent Raman Spectroscopy (CRS) in the area of biomedicine, life sciences and material sciences has been well demonstrated, its wide-spread practical application is still rather limited. The two main CRS techniques are Coherent Anti-Stokes Raman Scattering (CARS) and Stimulated Raman Scattering (SRS) spectroscopy or microscopy. Here we present the current state of the art
-
Navigating the future of ROA: Can it surprise us? Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-21 Carin R. Lightner, Agnieszka Kaczor, Christian Johannessen
Raman optical activity (ROA) has truly reached middle age at 50 years. The technique has matured significantly in this period, both with respect to instrument development and number of applications and users. Yet, ROA is still viewed as an auxiliary technique, compared to conventional Raman and infrared absorption spectroscopies. In this perspective, we outline the newest trends in the field of ROA
-
Mobile guardians: Detection of food fraud with portable spectroscopy methods for enhanced food authenticity assurance Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-21 Joe Stradling, Howbeer Muhamadali, Royston Goodacre
It is often said that “you are what you eat”, and whether this is said in this decade or in 2050 the choices we make about the food we consume can alter our biology. Therefore, knowing exactly what you eat is important for one to maintain a healthy balanced diet. However, as the food industry grows in complexity and struggles to meet the demand of a rapidly increasing population, it is likely that
-
Changes in the structure of hard tissues of the lower third molars at different stages of eruption according to IR spectroscopy data Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-19 Andrey S. Korshunov, Vladimir D. Vagner, Kirill N. Kuryatnikov, Denis V. Solomatin, Lyudmila V. Bel’skaya
-
Far- and mid-infrared FT-IR analysis of the single-crystal pentacene using a linearly polarized synchrotron radiation light source Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-19 Yasuo Nakayama, Junnosuke Miyamoto, Kaname Yamauchi, Yuya Baba, Fumitsuna Teshima, Kiyohisa Tanaka
Understanding and control of molecular vibrations are essential aspects for both fundamental and application considerations of organic semiconductor electronics. The reason is that the organic electronic devices are driven by diverse electronic processes in molecular solids, such as charge carrier transport and excitonic progression, that are strongly influenced by coupling with vibrations. In the
-
Rapid analysis of eucalyptus oil adulteration in Moroccan rosemary essential oil via GC-FID and mid-infrared spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-15 Abdennacer El Mrabet, Aimen El Orche, Abderrahim Diane, Joel B. Johnson, Amal Ait Haj Said, Mustapha Bouatia, Ibrahim Sbai-Elotmani
Essential Oil (EO) extracted from Rosemary is known for its therapeutic, antifungal, stimulant and antibacterial effects. This study aimed to detect and quantify the adulteration of Rosemary essential oil with different percentages of eucalyptus essential oil, using two analytical techniques: gas chromatography with Flame Ionization Detection (GC-FID) and Fourier Transform Mid-infrared spectroscopy
-
Machine learning algorithms for in-line monitoring during yeast fermentations based on Raman spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-12 Debiao Wu, Yaying Xu, Feng Xu, Minghao Shao, Mingzhi Huang
Given the intricacies and nonlinearity inherent to industrial fermentation systems, the application of process analytical technology presents considerable benefits for the direct, real-time monitoring, control, and assessment of synthetic processes. In this study, we introduce an in-line monitoring approach utilizing Raman spectroscopy for ethanol production by Saccharomyces cerevisiae. Initially,
-
Escherichia coli research on Raman measurement mechanism and diagnostic model Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-12 Dongyu Ma, Xiaoyu Zhao, Chunjie Wang, Haoxuan Li, Yue Zhao, Lijing Cai, Jinming Liu, Liang Tong
Escherichia coli (E. coli) is one of the most important pathogenic bacteria causing poultry diseases, characterized by a wide distribution range, rapid spread, and high mortality rate. Early diagnosis of E. coli in poultry feces provides the possibility for targeted treatment and rapid recovery of diseased poultry, and more importantly, prevents the rapid spread of pathogens among densely bred poultry
-
Spectralomics – Towards a holistic adaptation of label free spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-12 Hugh J. Byrne
Vibrational spectroscopy, largely based on infrared absorption and Raman scattering techniques, is much vaunted as a label free approach, delivering a high content, holistic characterisation of a sample, with demonstrable applications in a broad range of fields, from process analytical technologies and preclinical drug screening, to disease diagnostics, therapeutics, prognostics and personalised medicine
-
Blood collection tube components interference on spectral signatures of chronic kidney disease probed by micro-reflectance Fourier-transform infrared spectroscopy on serum Vib. Spectrosc. (IF 2.5) Pub Date : 2024-03-08 Jéssica Verônica da Silva, Gabrielle Teodoro Nepomuceno, André Mourão Batista, Glaucia Raquel Luciano da Veiga, Fernando Luiz Affonso Fonseca, Marcela Sorelli Carneiro-Ramos, Herculano da Silva Martinho
Kidney disease is a worldwide public health problem, affecting between 8% and 16% of the global population. Chronic kidney disease is a silent disease and its detection is often late, making the treatment difficult. Actual diagnosis is based on dosage of canonical renal biomarkers like creatinine and observation of proteinuria/albuminuria which would be relatively insensitive to disease progression
-
Calibration transfer between different spectrometers by wavelength correspondence Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-27 Erik Tengstrand, Lars Erik Solberg, Katinka Dankel, Tiril Aurora Lintvedt, Nils Kristian Afseth, Jens Petter Wold
In this paper we present a method for transferring calibrations between different spectrometers based on assigning wavelength correspondence. It has been tested for near-infrared (NIR) and Raman spectroscopic instruments, and three examples are included in the paper. The calibration transfer is done in three steps: first wavelength correspondence is established. Second, PLS models are built and tuned
-
Point-and-shoot: portable Raman and SERS detection of organic gunshot residue analytes Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-24 Taylor Shafirovich, Dariush Aligholizadeh, Mansoor Johnson, Ellen Hondrogiannis, Mary Sajini Devadas
Raman spectroscopy is one of many tools available to verify the molecular composition of an analyte. Due to its non-destructive nature and its ability to accurately discern differences in closely related molecular structures, it has become invaluable in many fields, including its potential for forensic gunshot residue detection. Firearm-related fatalities in the United States continue to rise and many
-
Spontaneous Raman bioimaging – Looking to 2050 Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-23 Alison J. Hobro, Nicholas I. Smith
Raman imaging has been employed for a wide range of biological sample analyses, is often chosen for its non-invasiveness, and ability to provide rich information from samples with minimal preparation requirements. In this paper we give a brief overview of the applications of spontaneous Raman imaging in bioanalysis and then consider what Raman imaging in 2050 might look like. We discuss the state of
-
Optimization of shell-isolated nanoparticle-enhanced Raman spectroscopy experiments with silver core-silica shell nanoparticles Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-21 Tatjana Charkova, Ilja Ignatjev
The synthesized silver nanoparticles (60–70 nm) coated with a thin (5–6 nm) shell of silicon dioxide were applied for the analysis of popular 4-mercaptobenzoic acid (4-MBA) self-assembled monolayer by the shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS). The detailed synthesis, purification of the nanoparticles, and optimizing washing procedure are provided. The obtained results are
-
Near-infrared spectral interval screening based on hierarchical variables clustering and group SCAD in multivariate calibration Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-17 Chen-Hao Huang
Spectral interval screening is a critical step in multivariate calibration, which can improve the model predictive performance and data interpretation. In this study, a novel method for interval selection is proposed based on a hierarchical variables clustering and group smoothly clipped absolute deviation(group SCAD) in combination with partial least squares(VCG-PLS). The proposed method makes use
-
Generic prediction model of moisture content for maize kernels by combing spectral and color data through hyperspectral imaging Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-08 Mengmeng Qiao, Guoyi Xia, Yang Xu, Tao Cui, Chenlong Fan, Yibo Li, Shaoyun Han, Jun Qian
Moisture content (MC) is an important index to measure the quality of maize kernels. This study aims to construct a generic prediction model and optimize the characteristic variables for efficiently predicting the MC of maize kernels across various varieties. Visible/near-infrared hyperspectral imaging (HSI) within the wavelength range of 374.98 - 1038.79 nm is employed. The 270 samples containing
-
Electrochemically assisted SERS sensing of adenosine triphosphate using a carbon microelectrode with composite plasmonic nanostructures Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-02 Haifeng Zhou, Janina Kneipp
The detection of adenosine triphosphate (ATP) is crucial in several biomedical applications. Here, we propose an electro-optical sensor for ATP that functions without optical labels or recognition unit based on the electrochemistry-assisted formation of ATP-Ag+ complexes and subsequent plasmon-supported generation of the intrinsic surface-enhanced Raman scattering (SERS) spectrum of ATP. Using bimetal-functionalized
-
IR intensities for out-of-plane vibrations at planar transition state structures: The NX3 series Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-01 Wagner Eduardo Richter, Leonardo José Duarte
The ground state pyramidal geometries of NX (X = H, F, Cl, Br) molecules might undergo a process called “pyramidal inversion”, with a planar transition state structure connecting two identical but oppositely oriented pyramids. In view of recent findings regarding infrared intensities of planar molecules as well as IR intensities of transition states structures, which have demonstrated how the atomic
-
Chemical and microbial characterization of cyanobacterial extracellular polymeric substances (EPS) in biofilm extracts from Hathi Khana, An ancient monument in Agra, Taj complex Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-01 Deepankar Banerjee, Sabyasachi Sarkar, Rajendra Yadav, M.R. Singh
The Taj Mahal and its complex are iconic symbols of India’s cultural heritage, and preserving their appearance and structural integrity is of utmost importance. The discoloration of ancient heritage structures caused by microbial soiling, particularly the action of cyanobacteria, green algae, and lichens, and the role of Extracellular Polymeric Substances (EPS) secreted by these microorganisms, is
-
Evaluating the detection of cocaine and its impurities concealed inside fruit- and vegetable- food products using handheld spatially offset Raman spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2024-02-01 Sulaf Assi, Ismail Abbas, Leung Tang, Sarah Rowlands, Megan Wilson, Thomas Coombs, Basel Arafat, Mana Al-Hamid, Dhiya Al-Jumeily
This study investigated the use of handheld spatially offset Raman spectroscopy for the identification of drugs concealed within fruit and vegetable food products, which is a common method of drug trafficking in busy environments such as airports. Handheld Raman spectroscopy is advantageous due to its mobility, speed, and chemical specificity for drug analysis. In this study, spatially offset Raman
-
-
Use of near-infrared spectroscopy for the online monitoring of natural gas composition (hydrocarbons, water and CO2 content) at high pressure Vib. Spectrosc. (IF 2.5) Pub Date : 2024-01-19 Larissa F. Torres, Moema A. Damascena, Matheus M.A. Alves, Klebson S. Santos, Elton Franceschi, Cláudio Dariva, Vinicius A. Barros, Darley C. Melo, Gustavo R. Borges
The natural gas production from Brazilian pre-salt fields imposed new challenges for petrochemical industry. Actual treatment facilities are not adequate for this new scenario and studies have been conducted to apply new adsorbents materials and membranes for water and CO removal from natural gas at high pressures. To better develop such investigations, sensors for on-line monitoring of natural gas
-
A rapid determination of wheat flours components based on near infrared spectroscopy and chemometrics Vib. Spectrosc. (IF 2.5) Pub Date : 2024-01-10 Wanzhu Zhou, Yongqian Lei, Qidong Zhou, Jingwei Xu, He Xun, Chunhua Xu
-
Prediction of physical attributes in fresh grapevine (Vitis vinifera L.) organs using infrared spectroscopy and chemometrics Vib. Spectrosc. (IF 2.5) Pub Date : 2024-01-09 Elizma van Wyngaard, Erna Blancquaert, Hélène Nieuwoudt, Jose Luis Aleixandre-Tudo
-
Rapid determination of alprazolam in gin tonic cocktails based on the coupling of IR spectroscopy and chemometrics: A feasibility study Vib. Spectrosc. (IF 2.5) Pub Date : 2024-01-12 Alessandra Biancolillo, Federico Puca, Martina Foschi, Angelo Antonio D’Archivio
-
Water dimer in CCl4 investigated by in-situ infrared spectroscopy and computational analysis Vib. Spectrosc. (IF 2.5) Pub Date : 2024-01-09 Jaejin Lee, Adam H. Turner, Soo Ryeon Ryu, Yung Sam Kim, Doseok Kim
The low solubility of solute molecules in a nonpolar solvent and the weak interactions between solute and solvent molecules can be utilized to study isolated solute molecules. The in-situ inclusion process of HO and DO in CCl was observed by infrared absorption spectroscopy. These in-situ spectra showed deviations from the monomer spectrum over time attributed to the formation of water dimers. The
-
Rapid and high accurate identification of Escherichia coli active and inactivated state by hyperspectral microscope imaging combing with machine learning algorithm Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-22 Chenlu Wu, Yanqing Xie, Qiang Xi, Xiangli Han, Zheng Li, Gang Li, Jing Zhao, Ming Liu
Rapid identification of the active state of foodborne bacteria is crucial for ensuring the safety and quality control of food or pharmaceutical products. In this study, a combination of hyperspectral microscope imaging (HMI) and machine learning algorithm is employed for the identification of active state of Escherichia coli (E. coli). Hyperspectral microscope images of live, 100 ℃ heat inactivation
-
-
Qualitative and quantitative studies of multicomponent gas by CNN-KPCA-RF model Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-26 Haibo Liang, Yu Long, Gang Liu
To improve the accuracy of multi-component gas analysis in infrared spectroscopy and simplify the workflow, an infrared spectroscopy gas detection method based on an improved convolutional neural network is proposed. This method can not only identify a variety of gas categories but also finely identify the concentration of gas. To verify the model identification effect proposed in this paper, eight
-
The feasibility of using ATR-FTIR spectroscopy combined with one-class support vector machine in screening turmeric powders Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-23 Joel I. Ballesteros, Len Herald V. Lim, Rheo B. Lamorena
-
Enhancement of species-specific analysis for meat and bone meal by matrix fragments-related spectral fusion Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-22 Bing Gao, Qingyu Qin, Xiaodong Xu, Lujia Han, Xian Liu
In this investigation, a pioneering approach involving the fusion of matrix fragments-related spectral data was proposed to improve the underperformance observed in raw meat and bone meal (MBM) when employed for species discrimination analysis. Initially, the MBM matrix was characterized as a binary mixture comprising bone fragment (BF) and meat fragment (MF). Subsequently, the disparities in near
-
Estimation of foliar glucose content of areca palm by a smartphone app and Fourier transform infrared spectroscopy based multivariate modeling Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-22 V. Arunachalam, Diksha C. Salgaonkar, Satvashil S. Devidas, Bappa Das
-
Determining the geographical origin and glycogen content of oysters using portable near-infrared spectroscopy: Comparison of classification and regression approaches Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-20 Bingjian Guo, Ziwei Zou, Zheng Huang, Qianyi Wang, Jinghua Qin, Yue Guo, Min Dong, Jinbin Wei, Shihan Pan, Zhiheng Su
-
Effect of vibrational resonances and dynamic polarizability on the Raman spectrum of furfural: A vibrational coupled cluster study Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-16 Nivedhitha Palanisamy, Subrata Banik
-
Comparative forensic discrimination of pink lipsticks using fourier transform infra-red and Raman spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-13 Rowdha Abdulla Alblooshi, Rashed Humaid Alremeithi, Abdulrahman Hussain Aljannahi, Ayssar Nahlé
As a routine, lipstick is daily used by females and can easily be transferred to clothes, cups, tissue papers, and other objects. The analysis of lipsticks is a relatively new and exciting field in forensics, helping to identify suspects in criminal cases where lipstick evidence has been left at crime scenes. By matching a specific brand of lipstick to a sample, investigators can positively connect
-
Quantitative analysis of pyrazinamide polymorphs in ternary mixtures by ATR-FTIR and Raman spectroscopy with multivariate calibration Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-01 Jian Zhou, Baoxi Zhang, Lixiang Gong, Kun Hu, Shiying Yang, Yang Lu
The polymorphism of drugs exists widely in solid chemical drugs. It will affect the physical and chemical properties of drugs, as well as bioavailability. So it is very necessary to establish an quantitative method to improve the quality control level of polymorphic drugs. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and Raman spectra have been included in many countries’ pharmacopoeia
-
Spectral classification analysis of recycling plastics of small household appliances based on infrared spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-06 Qunbiao Wu, Jiachao Luo, Haifeng Fang, Defang He, Tao Liang
The recycling of plastics from small household appliances is of great significance in improving the environment and addressing resource shortages, and has gradually become a focus of attention in various countries. Firstly, spectra were collected from samples with different colors, oxidation levels, and flame retardants. It was found that samples with different colors and oxidation levels exhibited
-
Machine learning driven portable Vis-SWNIR spectrophotometer for non-destructive classification of raw tomatoes based on lycopene content Vib. Spectrosc. (IF 2.5) Pub Date : 2023-12-02 Arun Sharma, Ritesh Kumar, Nishant Kumar, Vikas Saxena
-
Explanation and prediction for the product of trehalose dihydrate selective dehydration process using mid-frequency Raman difference spectra Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-30 Yingjie Fan, Rongrong Xue, Fenghua Chen
Explanation and prediction for the product of trehalose dihydrate dehydration process was realized in this work. β form is the thermodynamic dehydration product of trehalose dihydrate. And α form is the kinetic dehydration product of trehalose dihydrate, which was analyzed by low-frequency Raman spectra, mid-frequency Raman difference spectra and IR difference spectra, and the analysis results confirmed
-
Noninvasive in vivo application of confocal Raman spectroscopy in identifying age-related biochemical changes in human stratum corneum and epidermis Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-30 Julia Marinzeck de Alcantara Abdala, Fernanda Ricci Lemos, Ritiane Modesto de Almeida, Vamshi Krishna Tippavajhala, Gustavo Carlos da Silva, Lázaro Pinto Medeiros Neto, Priscila Pereira Fávero, Airton Abrahão Martin
-
The research on the molecular spectroscopic recognition mechanism of microplastics in typical agricultural media Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-29 Xiaodong Xu, Qianya Liu, Huimin Zhang, Lujia Han, Xian Liu
To study the identification mechanism of microplastics in agricultural environmental media by molecular spectroscopy, two typical media, soil and fishmeal, were selected for this study. Three common microplastics, PE, PP, and PS, were used as research objects. Near-infrared (NIR) and mid-infrared (MIR) spectroscopy combined with chemometric methods were used to explore microplastics' identification
-
Raman spectroscopy investigation on amorphous polyetherketoneketone (PEKK) Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-22 Karl Delbé, France Chabert
-
Sensitive detection of trilobatin in tea beverages based on hydroxy-functionalized Ag@COF SERS substrate Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-25 Weinan Guan, Guoqing Chen, Zichen Yang, Taiqun Yang, Chaoqun Ma, Lei Li, Hui Gao, Chun Zhu, Zichen Cai, Yan Zhou, Wei Zhang, Xin Li
-
MSNNet: Multi-scale-abled networks with multi-groups channel attention for vibrational spectrum matching Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-21 Youpeng Fan, Yongchun Fang
In recent years, deep learning methods have exhibited superior performance in many applications in vibrational spectroscopy especially compared with conventional machine learning methods such as Support Vector Machine (SVM) and Partial Least Squares (PLS). On the other hand, almost all of these methods employ such as LeNet and ResNet as their backbones which are not designed for processing spectra
-
Local structure of hydrated nanocrystalline films of the proton conductor BaZr1-xScxO3-x/2 studied by infrared spectroscopy Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-24 Elena Naumovska, Gabriel Kofi Nzulu, Laura Mazzei, Arnaud Le Febvrier, Kristina Komander, Martin Magnuson, Max Wolff, Per Eklund, Maths Karlsson
We report results from a study of the local structure of hydrated nanocrystalline 2 μm films of the well known proton conductor BaZr1-xScxO3-x/2 with x = 0.45, 0.54 and 0.64, using infrared (IR) spectroscopy. The films were prepared by magnetron sputtering. Analysis of the IR spectra focused on the O–H stretching region (2000—3700 cm-1), which reveals the presence of several distinct O–H stretching
-
Application of 13CH4 double model online analysis method based on Fourier Transform Infrared Spectroscopy in energy exploration Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-22 Bin Wang, Xiaojun Tang, Jinhui Deng, Yuanying Gan, Xiaoshan Li, Feng Zhang, Youshui Lu
In the last decades, the substantial demands for 13CH4 detection in oil, natural gas, and geological prospecting have been increasing. Among the commonly used gas detection methods, Fourier Transform Infrared Spectroscopy has the advantages of a short detection cycle and simultaneous detection of many gas components, but it has not been realized for the online analysis of 13CH4. In this paper, we propose
-
FT-IR analysis of tilapia fillets: Developing PLS models for the prediction of storage days, aerobic plate count, and lactobacilli Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-17 Luis Ramiro Caso Vargas, Karen Aguilar Notario, Héctor Ruiz Espinosa, Raul Delgado Macuil, Hervey Rodríguez González, Amado Enrique Navarro Frómeta, Leslie Susana Arcila Lozano
Chemometric models using FT-IR and Partial Least Squares (PLS) regression were developed for the rapid determination of aerobic plate count (APC), lactobacilli count, and storage time of tilapia fillets. A comprehensive data set of 137 spectra was obtained from sampled tilapia over a 10-month period. IR absorption bands of methyl and methylene stretching vibrations, amide I and II, and 1500–1025 cm−1
-
Investigations of black and red figure pottery shards and local clay, excavated at Ainos (Enez-Turkey), by multiple analytical techniques Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-20 Sevim Akyuz, Sefa Celik, Gulnur Kurap, Aysen E. Ozel, Sait Basaran
-
Liquid-phase surface enhanced Raman spectroscopic detection of nerve agent motifs using gold nanostars Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-11 Dariush Aligholizadeh, Youssef Tewala, Kameron Langford, Nicole Hondrogiannis, Rohit Chikkaraddy, Mary Sajini Devadas
-
The rapid determination of the fatty acid content of rice by combining hyperspectral imaging and integrated learning models Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-10 Xue Fei, Kangling He, Yuexiang Huang, Jianping Tian, Xinjun Hu, Yan Liang, Xinqiang Yi, Liangliang Xie, Dan Huang
-
Ultra-sensitive SERS detection of Aβ 1–42 for Alzheimer's disease using graphene oxide/gold nanohybrids Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-10 Luyao Wang, Hui Chen, Shaojun Ma, Min Chang, Xuedian Zhang
Alzheimer's disease (AD) is an irreversible neurodegenerative brain disorder and the most common cause of dementia with significant social and economic impact. Despite the severity and prevalence of AD, early diagnosis of AD remains quite challenging. One of the important markers of neuropathology in AD patients is the aggregation of Aβ1–42 monomers into oligomers, which then become fibrils and eventually
-
A rapid detection method of three foodborne pathogens based on physical and chemical Raman spectroscopy enhanced Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-11 Yahui Chen, Yankun Peng, Jiewen Zuo, Tianzhen Yin
Escherichia coli, Listeria monocytogenes, and Salmonella typhi are three pathogens commonly found in food. Label-free enhanced substrates have limitations in achieving high sensitivity in three bacteria detection. To enable low-concentration detection and differentiation of foodborne pathogens, this research presents an optimized detection strategy using Au @Ag NPs as the enhancing substrate for SERS
-
Optimization of Fourier transform near-infrared spectroscopy model in determining saponin compounds of Panax notoginseng roots Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-11 Chaoping Li, Zhitian Zuo, Yuanzhong Wang
-
Development of homogeneous flexible substrates and evaluation of SERS performance for anionic and cationic dyes Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-10 Gabriela P. Oliveira, Ariete Righi, Mariana R. Almeida, Gustavo F.S. Andrade
-
In vivo confocal Raman spectroscopy investigation of glabridin liposomes dermal penetration process in human skin Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-10 Yanan Wang, Ke Wu, Shujing Li, Xiaozhen Li, Yifan He
Encapsulating glabridin with liposome technology can contribute to the bioavailability and application in cosmetic formulations. At the same time, the small particle size of liposomes makes it feasible to penetrate the stratum corneum and enhance the dermal delivery of glabridin. Confocal Raman spectroscopy (CRS) can be employed to monitor the dermal penetration of cosmetic actives for topical applications
-
Probing the Onset of the Bacterial Membrane Photodamage in Time using a Raman Optical Tweezer Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-10 Ashwini V. Bhat, Venugopal Rao Soma, Sharath Ananthamurthy
-
Terahertz/far infrared spectroscopy as an alternative method for the characterization of major components in Laggera decurrens essential oil Vib. Spectrosc. (IF 2.5) Pub Date : 2023-11-08 Tshepo Pheko-Ofitlhile, Rebaone Billy, Lucia Malebogo Lepodise
The Fourier Transform Infrared technique was used to determine the major components of Laggera decurrens essential oil. The experiment revealed that there are signatures of thymol, carvacrol and thymoquinone in Laggera decurrens essential oil. This was suggested by the existence of shared absorption bands between these pure compounds and Laggera decurrens essential oil. The PBE0 DFT functional was