Article
Optics
Qihang Chu, Xiaotian Li, Yuqi Sun, Jirigalantu, Ci Sun, Jun Chen, Fuguan Li, Bayanheshig
Summary: This paper introduces a multi-grating-based spatial heterodyne spectrometer (MGCDSHS). The principle and equations for generating interferograms in two cases, where the light beam is diffracted by one or two sub-gratings, are given. Numerical simulations of the instrument design demonstrate its ability to record simultaneous interferograms corresponding to different spectral features with high resolution over a broad spectral range. The compact and stable MGCDSHS solves mutual interference and throughput loss problems, making it suitable for high-sensitivity, high-resolution, and broadband spectral measurements.
Article
Biochemical Research Methods
Rhiannon Alder, Linda Xiao, Shanlin Fu
Summary: This study compared seven commercial SERS substrates for the analysis of cocaine, with substrate B providing the best enhancement of cocaine bands. It was shown that SERS is an ideal method for the rapid onsite analysis of illicit drugs in oral fluid, with potential future applications.
DRUG TESTING AND ANALYSIS
(2021)
Article
Chemistry, Analytical
Tanurup Das, Annapoorni Ammal, Abhimanyu Harshey, Vindresh Mishra, Ankit Srivastava
Summary: Semen is a critical body fluid in sexual assaults, and vibrational spectroscopy has emerged as a valuable tool for its analysis, but practical limitations still exist. Research has focused on identifying, discriminating, and estimating timing since deposition of semen.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Meiling Zhang, Jialin Pan, Xiaoyu Xu, Gege Fu, Li Zhang, Peng Sun, Xu Yan, Fangmeng Liu, Chenguang Wang, Xiaomin Liu, Geyu Lu
Summary: A cost-effective and highly reproducible capillary-based surface-enhanced Raman scattering (SERS) platform for sensitive, portable detection and identification of fentanyl is presented. The platform shows good reproducibility and low detection limit, indicating its potential application in trace analysis.
ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Analytical
Arya Suresh Babu, Anjali Tomar, Shweta Sharma
Summary: This study explores the existing trends in examining the sequence of ink strokes using vibrational spectroscopic techniques (infrared and Raman spectroscopy) and proposes future research directions in this field. The findings suggest that factors like paper type and time gap between strokes do not affect the determination of stroke sequence. The use of multiple analytical techniques in combination with vibrational spectroscopic techniques can provide reliable results.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Emma Buchan, Liam Kelleher, Michael Clancy, Jonathan James Stanley Rickard, Pola Goldberg Oppenheimer
Summary: This study systematically investigated the molecular spectral fingerprint of saliva and developed a non-destructive molecular profiling approach using hybrid artificial neural network algorithms and Raman spectroscopy. The classification algorithm successfully identified gender and age information from saliva, laying the platform for applications in forensics and biosensing. The discernible spectral molecular 'barcodes' primarily stemmed from amino acid, protein, and lipid changes in saliva.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Nicole M. Ralbovsky, Paromita Dey, Bijan K. Dey, Igor K. Lednev
Summary: Cellular differentiation is a crucial biological process that starts from embryonic development and continues into adulthood. Using deep ultraviolet resonance Raman spectroscopy in combination with chemometric techniques, different stages of cellular differentiation can be easily distinguished, offering great potential for detecting abnormal cellular differentiation in pathological conditions in the future.
Article
Electrochemistry
Florine Joosten, Marc Parrilla, Alexander L. N. van Nuijs, Kenneth I. Ozoemena, Karolien De Wael
Summary: Illicit drugs pose a serious threat to society and public health, and accurate and efficient sensors are needed for their detection to combat the war on drugs. Electrochemical sensors have emerged as a promising technique for rapid and accurate on-site detection of illicit drugs in recent years. However, there is limited literature on their use for detecting drug use in biological samples. This review provides an overview of strategies for the electrochemical detection of illicit drugs in oral fluid and highlights key challenges to improve the design of future devices.
ELECTROCHIMICA ACTA
(2022)
Review
Medicine, Legal
Danielle Kochenborger John, Klester dos Santos Souza, Marco Flores Ferrao
Summary: The use of non-destructive forensic methods for cocaine identification is crucial due to the large number of seized samples. Spectroscopic techniques such as ATR-FTIR, Raman, and NIR spectroscopy offer fast and cost-effective analysis, along with the reanalysis of samples. When combined with chemometrics, these methods allow for accurate determination and quantification of cocaine, overcoming the limitations of existing techniques. This review article comprehensively discusses the application of spectroscopic techniques in identifying cocaine in various forms and matrices, including food and textiles used for smuggling. It also explores the chemometric identification of cocaine in oral fluid and water, as well as the use of portable equipment for vibrational spectroscopy. The article aims to evaluate the main chemometric applications of spectroscopic data and provide new perspectives on cocaine identification using chemometrics.
FORENSIC SCIENCE INTERNATIONAL
(2023)
Article
Biochemical Research Methods
Huiyu Li, Chen Shen, Gongji Wang, Qinru Sun, Kai Yu, Zefeng Li, XingGong Liang, Run Chen, Hao Wu, Fan Wang, Zhenyuan Wang, Chunfeng Lian
Summary: This paper introduces a practical deep learning-based method called BloodNet, which can efficiently and accurately infer the time of bloodstain formation using easily accessible bloodstain photos. By utilizing a large-scale database and attention mechanisms, BloodNet can learn highly discriminative fine-grained features of bloodstains with different formation times, demonstrating the efficacy of deep learning techniques in TSD inference.
BRIEFINGS IN BIOINFORMATICS
(2022)
Article
Biochemical Research Methods
Huiyu Li, Chen Shen, Gongji Wang, Qinru Sun, Kai Yu, Zefeng Li, XingGong Liang, Run Chen, Hao Wu, Fan Wang, Zhenyuan Wang, Chunfeng Lian
Summary: This paper introduces a deep learning-based method (BloodNet) that can efficiently, accurately, and costlessly infer the time of bloodstain formation by using easily accessible bloodstain photos. The study utilizes a large-scale bloodstain photo database and attention mechanisms to learn discriminative fine-grained feature representations for different time periods. The efficacy of deep learning techniques in bloodstain time inference is further justified through visual analysis and microscopic analysis.
BRIEFINGS IN BIOINFORMATICS
(2023)
Article
Medicine, Legal
Makenzie Kuehn, Kevin Bates, J. Tyler Davidson, Geraldine Monjardez
Summary: The detection of intact explosives in the field is a unique challenge, and handheld Raman instruments have become popular for their speed, reliability, and portability. However, there is limited research on the detection capabilities of these instruments for explosive compounds. This study evaluated the detection capabilities of two handheld Raman spectrometers and investigated interference from glass and plastic containers. The results showed reproducible spectra for all analytes across both instruments, with the Rigaku ResQ-CQL displaying better resolution.
FORENSIC SCIENCE INTERNATIONAL
(2023)
Article
Geology
Christian Schmidt, Matthias Gottschalk, Rongqing Zhang, Jianjun Lu
Summary: The reconstruction of redox conditions during the formation of rocks and ore deposits remains a challenging task, but through analysis of tin ore samples from various locations, this study has revealed the oxygen fugacity conditions during tin ore formation. The results support the hypothesis that Sn(IV) prevailed over Sn(II) in the hydrothermal fluids, suggesting that redox reactions may play a smaller role than previously assumed in the formation models of hydrothermal tin deposits.
ORE GEOLOGY REVIEWS
(2021)
Article
Chemistry, Analytical
Barnaby G. Ellis, Conor A. Whitley, Safaa Al Jedani, Caroline I. Smith, Philip J. Gunning, Paul Harrison, Paul Unsworth, Peter Gardner, Richard J. Shaw, Steve D. Barrett, Asterios Triantafyllou, Janet M. Risk, Peter Weightman
Summary: A novel machine learning algorithm accurately distinguishes between oral squamous cell carcinoma nodal metastases and surrounding lymphoid tissue based on a specific Fourier transform infrared (FTIR) absorption ratio. The resulting image shows better agreement with immunohistochemistry staining images and better discrimination than FTIR images obtained at individual wavenumbers. Notably, scanning near-field optical microscopy (SNOM) images reveal variations in tissue chemical structure with high spatial resolution.
Article
Biochemistry & Molecular Biology
Giuseppe Pezzotti, Miyuki Kobara, Tamaki Nakaya, Hayata Imamura, Nao Miyamoto, Tetsuya Adachi, Toshiro Yamamoto, Narisato Kanamura, Eriko Ohgitani, Elia Marin, Wenliang Zhu, Ichiro Nishimura, Osam Mazda, Tetsuo Nakata, Koichi Makimura
Summary: Oral candidiasis, a common opportunistic infection, is mainly caused by Candida species. This study provides in-depth Raman spectroscopy analyses and proposes a barcode-assisted Raman method for rapid identification of oral yeast species. The method can enable on-site identification and improve disease control.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Chemistry, Analytical
Felix Zapata, Carmen Garcia-Ruiz
Summary: This work comprehensively reviews fundamental concepts about explosives and their classifications, proposing a new classification based on their chemical composition for researchers to analyze and identify explosives effectively.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2021)
Review
Instruments & Instrumentation
Felix Zapata, Adrian Lopez-Fernandez, Fernando Ortega-Ojeda, Gemma Montalvo, Carmen Garcia-Ruiz
Summary: This work aims to design a practical beginner's guide to Raman microscopy for undergraduate students, teachers, or practitioners who need to use it for the first time. It explains the main concepts about Raman microscopy, methodology development, and results interpretation using acetaminophen drugs as an example, demonstrating the instrumental potential effectively. Detection and unequivocal identification of different components in mixtures were successfully demonstrated, even for low concentration components, promoting an easy implementation of the Raman microscopy technique in laboratory settings.
APPLIED SPECTROSCOPY REVIEWS
(2021)
Review
Biochemistry & Molecular Biology
Felix Zapata, Victoria Pastor-Ruiz, Fernando Ortega-Ojeda, Gemma Montalvo, Ana Victoria Ruiz-Zolle, Carmen Garcia-Ruiz
Summary: Human UPE is influenced by internal stressors such as diseases and brain activity, making it a potential tool for diagnosing various illnesses and mood disorders. However, further research is needed to address unresolved controversial points.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Review
Chemistry, Analytical
Felix Zapata, Jose Manuel Matey, Gemma Montalvo, Carmen Garcia-Ruiz
Summary: This work reviews fundamental concepts about drugs, focusing on new psychoactive substances (NPS) and their classifications. A revised classification based on chemical composition is proposed to merge recent chemical groupings of NPS from various institutions, aiming to be useful for forensic practitioners/researchers.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Felix Zapata, Adrian Lopez-Fernandez, Fernando Ortega-Ojeda, Gloria Quintanilla, Carmen Garcia-Ruiz, Gemma Montalvo
Summary: Infrared (IR) spectroscopy is a widely used technique in chemical, pharmaceutical, and forensic sciences, but some graduate students lack training in optimizing experimental parameters and chemical substance identification. This laboratory practice introduces students to the basics of IR instrumental conditions and chemometrics analysis through visual spectra comparison and statistical analysis.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Article
Biochemistry & Molecular Biology
Alexis Weber, Anna Wojtowicz, Igor K. Lednev
Summary: Blood is a common body fluid found at crime scenes, allowing for identification and determination of the time since deposition (TSD); understanding the biochemical mechanisms of blood aging is crucial for forensic investigations; this study investigated the fluorescence properties of peripheral and menstrual blood over 24 hours post deposition using steady-state fluorescence spectroscopy.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Article
Environmental Sciences
Jose Manuel Matey, Adrian Lopez-Fernandez, Carmen Garcia-Ruiz, Gemma Montalvo, Felix Zapata, Maria A. Martinez
Summary: The analysis of drugs of abuse in biological matrices like hair requires high selectivity and sensitivity. Continuous development of new analytical methods and technologies is essential to accurately detect and identify new substances in the market.
Article
Medicine, Legal
J. M. Matey, Gemma Montalvo, Carmen Garcia-Ruiz, Felix Zapata, Adrian Lopez-Fernandez, Maria A. Martinez
Summary: This study reevaluated ten former cases from Madrid's National Institute of Toxicology and Forensic Science, finding polyconsumption of other drugs and NPS in cases with positive ketamine consumption, which opened up the possibility of conducting a prevalence study on NPS.
FORENSIC SCIENCE INTERNATIONAL
(2021)
Article
Environmental Sciences
Marcella A. de Melo Lucena, Felix Zapata, Filipe Gabriel M. Mauricio, Fernando E. Ortega-Ojeda, M. Gloria Quintanilla-Lopez, Ingrid Tavora Weber, Gemma Montalvo
Summary: This study evaluated the efficiency of using an ozone chamber to clean firefighters' PPE, revealing the risks associated with the presence of remaining PAH and oxygenated-PAH compounds after treatment. Despite some chemical degradation observed, the new compounds might be equally or more toxic than the initial PAH, highlighting the limitations of ozone chambers as a sole decontamination method for firefighters.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Maria Jose Aliano-Gonzalez, Gemma Montalvo, Carmen Garcia-Ruiz, Marta Ferreiro-Gonzalez, Miguel Palma
Summary: This study evaluated the feasibility of a screening method using HS-GC-IMS and chemometrics to assess the transference of volatile compounds through firefighter turnout gear. The results showed that this method can be used to evaluate the quality of firefighter turnout gear.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Food Science & Technology
Diogo Videira-Quintela, Francisco Guillen, Olga Martin, Gemma Montalvo
Summary: This study demonstrates the production of ternary composite films with antibacterial properties using alternative fillers like copper. The migration of copper in the films is within the regulated limit, making them suitable for acidic, alcoholic, and aqueous food products.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Environmental Sciences
Luis Ramos-Guerrero, Gemma Montalvo, Marzia Cosmi, Carmen Garcia-Ruiz, Fernando E. Ortega-Ojeda
Summary: The Raman analysis of marijuana was successfully conducted by optimizing the collection parameters and laser focusing techniques. The results demonstrated the effectiveness of Raman spectra for marijuana characterization. Additionally, a chemometrics-assisted method showed good classification of different marijuana varieties and identification of significant spectral bands.
Article
Chemistry, Analytical
Shelby R. Khandasammy, Nathan R. Bartlett, Lenka Halamkova, Igor K. Lednev
Summary: Gunshot residue (GSR) is an important forensic trace evidence and inorganic GSR particles are currently used to establish the fact of shooting. However, recent research has shown that organic GSR (OGSR) has great potential in providing additional information for crime scene investigation. This study used Raman spectroscopy and chemometric modeling to analyze smokeless powder, which is the precursor to OGSR. The proposed hierarchical model demonstrated the potential to determine the manufacture and bullet type based on smokeless powder analysis. Further research is needed to expand this approach to the analysis of OGSR and make it a useful tool for law enforcement agencies.
Article
Chemistry, Analytical
Andrea Chiuri, Roberto Chirico, Federico Angelini, Fabrizio Andreoli, Ivano Menicucci, Marcello Nuvoli, Cristina Cano-Trujillo, Gemma Montalvo, Violeta Lazic
Summary: This article introduces a sensor called Crime Light Imaging (CLI) that is designed to perform high-resolution photography and visualization of latent traces at a distance of 2-10 meters. CLI combines high-power illumination LEDs and a color CMOS camera to detect fingerprints, blood, semen, and other traces, providing excellent image resolution and contrast enhancement. This represents a completely new approach in crime scene forensic examination.
Article
Medicine, Legal
Irene Burgos-Diez, Felix Zapata, Manuel Jose Chamorro-Sancho, Manuel Jesus Ruano-Rando, Jose Luis Ferrando-Gil, Carmen Garcia-Ruiz, Gemma Montalvo, Fernando Ortega-Ojeda
Summary: This study achieved 3D digital reconstruction of cavities created by different projectiles in ballistic soap blocks using CT analysis and 3D Slicer imaging software, improving measurement sensitivity and accuracy, and the ability to preserve evidence.
INTERNATIONAL JOURNAL OF LEGAL MEDICINE
(2021)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
